Pharmacology Flashcards
What are the 5 barriers to drug distribution?
drug’s chemical properties, tissue blood flow, protein binding, tissue binding, anatomic barriers
What are examples of anatomic barriers?
blood-brain barrier, epidural barrier, blood-testis barrier
What is the definition of the therapeutic range of a drug?
the drug concentration in the body that produces the desired effect in the animal with minimal or no signs or toxicity
What is the drug concentration in the body that produces the desired effect in the animal with minimal or no signs or toxicity?
therapeutic range of a drug
What are the 3 major drug factors that keep drugs in their therapeutic range?
route of administration, drug dose, dosage interval
How do you find the therapeutic range?
LD50/ED50
What is LD50/ED50 used to find?
a drug’s therapeutic range
The larger the therapeutic range the ___ the drug
safer
What is LD50?
lethal dose
What is ED50?
effective dose
What are the most common diseases that impact drug pharmacokinetics?
liver disease, kidney disease, cardiovascular disease
How does cardiovascular disease effect pharmacokinetics?
alters the distribution of blood flow to tissues
How does kidney diseases effect drugs?
decreased drug elimination, increases plasma drug concentrations, risk of adverse drug reactions or toxicity, increased fluid retention.
What is the primary site of drug metabolism?
the liver
The liver is the primary site of what?
drug metabolism
What has the most significant impact on drug disposition?
reduced kidney function
Reduced kidney function has what kind of impact on drug disposition?
the most significant
What kind of adverse drug reaction are predictable?
dose-dependent drug reactions
What kind of adverse drug reaction are unpredictable?
idiosyncratic drug reactions
What kind of adverse drug reaction affects all members of a species?
dose-dependent drug reaction
What kind of adverse drug reaction affects only a small portion of treated animals?
idiosyncratic drug reaction
What kind of adverse drug reaction has a likelihood of reaction increasing as the dose increases?
dose-dependent drug reaction
What kind of adverse drug reaction has a risk of reaction that increases with the dose?
idiosyncratic drug reaction
How do you treat idiosyncratic drug reactions?
drug withdrawal and drug avoidance
How do you treat dose-dependent drug reactions?
dose reduction and brief drug withdrawal
Do idiosyncratic drug reactions occur immediately?
no
What is therapeutic drug monitoring?
periodic measurement of amount of drug in the blood
When is therapeutic drug monitoring recommended?
pharmacokinetics of drug varies significantly among individuals, drug has narrow therapeutic range
What is the goal of therapeutic drug monitoring?
to optimize drug plasma concentrations to maximize efficacy and minimize toxicity
What is optimizing drug plasma concentrations to maximize efficacy and minimize toxicity a goal of?
therapeutic drug monitoring
T or F. Glucocorticoids are eliminated from the body quickly.
False. They’re eliminated from the body very slowly.
What does the federal government do?
assure available drugs are safe, effective, and prepared in accordance with manufacturing standards
What does the state laws do?
control the distribution of drugs within the state
What does the FDA’s Center for Veterinary Medicine (CVM) do?
regulates manufacturing and distribution of drugs, food additives and medical devices. Oversees regulations including approval, safety, efficacy, and postapproval monitoring
Who regulates drug residues in food animals?
FDA and EPA
What does EPA stand for?
Environmental Protection Agency
Drug compounding is limited to what kind of drugs?
FDA-approved drugs only
What are the uses of compounding drugs?
creating discontinued drugs, creating dosages and strength specific to an animal’s weight and health, creating alternative dose forms such a liquids/ointments/tablets, adding flavoring, customizing formula that combine multiple drugs
What are some concerns of compounding drugs?
might turn an FDA approved drug into an unapproved drug, made without FDA oversight, may not be sterile and cause infections, errors may result in disease or death
What does FARAD stand for?
Food Animal Residue Avoidance Bank
What is the abbreviation for Food Animal Residue Avoidance Bank?
FARAD
What is FARAD?
a computer-based system designed to provide information on how to avoid drug, pesticide, and environmental contaminant residue problems
Which agency provides a list of drugs prohibited for use in livestock?
FARAD
How long should records of controlled substances be kept?
2 years
What are the four major steps in drug development?
synthesis/discovery of a new drug compound, safety/effectiveness evaluation, submission and review of the new animal drug application, postmarketing surveillance stage
What are short term tests used for when looking at safety and effectiveness evaluation?
to check the animal for obvious adverse reactions
What are long term tests used for when looking at safety and effectiveness evaluation?
check the animal’s various organ systems for toxicity damage
How long are long term tests ran for when looking at safety and effectiveness evaluation
3-24 months of repeated dosing
How long are long term tests done for when looking at safety and effectiveness evaluation
hours following a test dose
What do carcinogenicity tests look at in terms of safety and effectiveness evaluation?
cancer causing
What do teratogenicity tests look at in terms of safety and effectiveness evaluation?
fetal defects in pregnant animals
What are 6 rights of drug administration?
the right drug, the right dose, the right time, the right route, the right patient, the right documentation
How many times should you check the label on a container?
three times
Should you ever give a medication from a container that is unlabeled?
no
Why are daily drug doses given at specific times during the day?
to keep plasma levels at the proper level to cause the desired effect
What should be included in the documentation when you administer drugs?
the drug, dosage administered, time and date administered, the route and site, patient’s response, signature or initials
What are factors that affect the route of drug administration?
drug may have on effect when given parenterally and another nonparenterally, water-insoluble drugs can be given IM but not IV, some drugs are destroyed or modified by stomach acid and cannot be given orally
Why should air bubbles be removed from drugs being administered IV?
to avoid causing air emboli and tissue damage
Are drugs administered IM volume limited?
yes
What does the sympathetic (adrenergic) nervous system do to the body?
increases heart rate, increases respiration rate, increases blood flow to muscles, decreases GI function, causes pupillary dilation
What does the parasympathetic (cholinergic) nervous system do to the body?
brings heart rate/respiration rate/and blood flow to muscles back to normal levels, returns GI function to normal, constricts pupils to normal size
What do cholinergic drugs do?
mimic the action of the parasympathetic nervous system
Examples of cholinergic drugs?
bethanechol, metoclopramide, pilocarpine, edrophonium, neostigmine, demecarium, organophosphates
What do anticholinergic drugs do?
inhibit the actions of acetylcholine by occupying the acetylcholine receptors
Examples of anticholinergic drugs?
atropine, glycopyrrolate, aminopentamide, propantheline
What do adrenergic drugs do?
stimulate the action of the sympathetic nervous system
What are side effects of adrenergic drugs?
tachycardia, hypertension, cardiac arrhythmias
Examples of adrenergic drugs?
epinephrine, norepinephrine, isoproterenol, dopamine, dobutamine, phenylpropanolamine, isoetharine, albuterol, terbutaline, ephedrine, xylazine
What do adrenergic blocking agents do?
block the effects of the adrenergic neurotransmitters
What are examples of alpha-blockers?
phenoxybenzamine, prazosin, yohimbine
What are examples of beta-blockers?
propranolol, metoprolol, timolol
What are dendrites?
branch-like extensions that receive impulses and carry them toward the cell body
What do you call branch-like extensions that receive impulses and carry them toward the cell body?
dendrites
What is an axon?
single extension of the neuron that carries impulses away from the cell body
What do you call a single extension of the neuron that carries impulses away from the cell body?
axon
What do sensory neurons do?
carry impulses from inside and outside the body to brain and spinal cord
What do interneurons do?
process incoming impulses and pass them on to motor neurons
What do motor neurons do?
carry impulses away from the brain and spinal cord
How do anticonvulsants help prevent seizures?
by suppressing the spread of abnormal electric impulses from the seizure focus to other areas of the cerebral cortex
Examples of barbituates used as an anticonvulsant.
phenobarbital, pentobarbital
What do benzodiazepines do when used as an anticonvulsant?
potentiate effects of GABA, cause muscle relaxtion, relieve anxiety
Examples of benzodiazepines used as an anticonvulsant.
diazepam, lorazepam, clorazepate
What is Flumazenil?
benzodiazepine reversal agent
What is a benzodiazepine reversal agent?
Flumazenil
What are side effects of gabapentin?
sedation, ataxia, potential for hepatotoxicity
How does Gabapentin work?
inhibiting calcium channels resulting in decreased excitatory neurotransmission
What do tranquilizers do?
calm animals, reduce anxiety and aggression
What do sedatives do?
quiet excited animals, decrease irritability and excitement
What is an example of a phenothiazine derivatives?
acepromazine
What does acepromazine do?
causes sedation, relieves fear and anxiety
What do phenothiazine derivatives do when used as a calming agent?
causes sedation, relieves fear and anxiety
What are side effects of phenothiazine derivatives when used as a calming agent?
hypotension, lower seizure threshold, protrusion of nictitating membrane, paraphimosis
What are side effects of acepromazine when used as a calming agent?
hypotension, lower seizure threshold, protrusion of nictitating membrane, paraphimosis
What are examples of benzodiazepines used as a calming agent?
midazolam, diazepam
What are benzodiazepines used for when used as a calming agent?
anti-anxiety, produce muscle relaxation, reduce anxiousness
What are examples of alpha-2 agonists used as a calming agent?
xylazine, detomidine, medetomidine
What are side effects when using alpha-2 agonists as a calming agent?
bradycardia and heart block
What reversal agents are available for alpha-2 agonists? calming agent
yohimbine and atipamezole
What are side effects of opioids?
respiratory depression and excitement if given rapidly
What are the three opioid receptors? Where are they found/
Mu = found in the brain Kappa = found in the cerebral cortex and spinal cord Sigma = found in the brain
What do opioid antagonists do?
block the binding of opioids to their receptors
What are opioid receptors used for?
to treat respiratory and CNS depression of opioid use
What is an example of an opioid antagonists?
naloxone
What is naloxone used for?
to reverse respiratory depression following narcotic overdose
What is a neuroleptanalgesic?
combination of an opioid and a tranquilizer or sedative
What are examples of neuroleptanalgesics?
acepromazine + morphine, xylazine + butorphanol
What do local anesthetics do?
block nerve transmission in the area of application with no loss of consciousness
What are examples of local anesthetics?
lidocaine, proparacaine, tetracaine, mepivacaine, bupivacaine
What are side effects of barbituates used as an injectable general anesthetic?
potent cardiovascular and respiratory depression
What are side effects of dissociatives used as an injectable general anesthetic?
cardiac stimulation, respiratory depression, exaggerated reflexes
What do dissociatives cause when used as an injectable general anesthetic?
muscle rigidity, amnesia, mild analgesia
What can halothane cause?
hepatic problems, malignant hyperthermia, cardiac problems, tachypnea
When is halothane contraindicated?
gastric dilation, pneumothorax, twisted intestines
What are side effects of isoflurane?
respiratory depression and malignant hyperthermia
What does Doxapram do?
stimulates brainstem to increase respiration in animals with apnea or bradypnea
When is Doxapram commonly used?
when animals have C-sections
What do euthanasia solutions usually contain?
pentobarbital
When is euthanasia solution a C-2 controlled substance?
when pentobarbital is the only narcotic agent present
When is euthanasia solution a C-3 controlled substance?
when pentobarbital is in combination with other agents
When pentobarbital is the only narcotic agent present, what class of a controlled substance is a euthanasia solution?
class 2
When pentobarbital is in combination with other agents, what class of a controlled substance is a euthanasia solution?
class 3
What is an example of an expectorant?
guaifenesin
What is guaifenesin?
an expectorant
What do expectorants do?
increase the fluidity of mucus, increase the flow of respiratory secretions to allow material to be coughed up from the lungs
What do mucolytics do?
decrease the viscosity or thickness of respiratory secretions
What is acetylcysteine an example of?
mucolytic
What is an example of a mucolytic?
acetylcysteine
What is acetylcysteine also used to treat?
acetaminophen toxicity
What is used to treat acetaminophen toxicity?
acetylcysteine
What may be centrally acting or locally acting?
antitussives
What do antitussives do?
suppress coughs
What respiratory drug suppresses cough?
antitussives
Antitussives may be ___ acting or ___ acting.
centrally, locally
What are examples of centrally acting antitussives?
butorphanol, hydrocodone, codeine, dextromethorphan, trimeprazine
What is butorphanol, hydrocodone, codeine, dextromethorphan, trimeprazine an example of?
centrally acting antitussives
What are examples of locally acting antitussives?
cough syrups
Are locally acting antitussives common in veterinary medicine?
no
What type of respiratory drug decreases the viscosity or thickness of respiratory secretions?
mucolytics
What type of respiratory drug increases the fluidity of mucus and increases the flow of respiratory secretions to allow material to be coughed up from the lungs?
expectorants
What do decongestants do?
decrease the congestion of nasal passages by reducing swelling
What respiratory drug decreases the congestion of nasal passages by reducing swelling?
decongestants
What are examples of decongestants?
phenylephrine and pseudophedrine
What are phenylephrine and pseudophedrine and example of?
decongestant
What do antihistamines do?
block the effects of histamine
What respiratory drug blocks the effects of histamine?
antihistamines
What are side effects of antihistamines?
CNS depression and anticholinergic effects such as dry mouth
What do bronchodilators do?
widen the lumen of the bronchi and counteract bronchoconstriction
What respiratory drugs widen the lumen of the bronchi and counteract bronchoconstriction?
bronchodilators
What are examples of bronchodilators?
cholinergic blocking agents (aminopentamide, atropine, glycopyrrolate)
beta-2-adrenergic agonists (epinephrine, isoproterenol, terbutaline, albuterol)
methylxanthines (aminophylline, theophylline)
What are examples of respiratory stimulants?
naloxone and yohimbine
What are 4 examples of asthma drugs?
glucocorticoids, bronchodilators, methylxanthines, cyclosporin
Glucocorticoids are orally used to treat ___ asthma.
feline
What is orally used to treat feline asthma?
glucocorticoids
There are ___ side effects with inhaled glucocorticoids than with ___ ones
inhaled, oral
What are inhaled glucocorticoids used for?
to decrease swollen and narrowed airways by decreasing inflammation
What asthma drug is used to decrease swollen and narrowed airways by decreasing inflammation?
inhaled glucocorticoids
What is used in addition to glucocorticoids in the treatment of feline asthma?
bronchodilators
What side effects of bronchodilators when used as an asthma drug?
tracheal or bronchial irritation
Which asthma drug has a narrow therapeutic index?
methylxanthines
What is a cyclosporin when speaking about asthma drugs?
a fungal derived protein useful in the allergic response in feline asthma
Which asthma drug is a fungal derived protein useful in the allergic response in feline asthma?
cyclosporin
What are side effects of cyclosporin?
nephrotoxicity and vomiting
What are some good management practices to help horses with COPD?
keeping horses outside as much as possible, reducing dust, storing hay in a dry place, improving ventilation in horse stables
How do glucocorticoids help COPD?
help decrease smooth muscle contraction, suppress inflammation, and reduce mucus production
What COPD drugs help decrease smooth muscle contraction, suppress inflammation, and reduce mucus production?
glucocorticoids
What does the urinary system do?
filter waste from blood, help control system pH, help produce blood, help control blood volume, help control blood pressure, help control system ion concentrations
What kinds of drugs affect the urinary system?
antihypertensive, diuretics
What do antihypertensive drugs do?
decrease hypertension (lower blood pressure)
What kind of drugs decrease hypertension (lower blood pressure)?
antihypertensive drugs
What are 4 types of antihypertensive drugs that affect the urinary system?
diuretics, angiotensin-converting enzyme inhibitors (ACE inhibitors), calcium-channel blockers, direct-acting arteriole vasodilators
What do diuretics do?
promote sodium and water loss
What do ACE inhibitors do?
block the conversion of angiotensin 1 to angiotensin 2, which results in decreased aldosterone secretion
What are examples of ACE inhibitors that affect the urinary system?
enalapril, captopril, lisinopril, benazepril
What drugs block the converson of angiotensin 1 to angiotensin 2?
ACE inhibitors
What do calcium-channel blockers do?
block the influx of calcium ions into the myocardial cells, resulting in an inhibition of cardiac and smooth muscle contractility
What kind of drug blocks the influx of calcium ions into the myocardial cells, resulting in an inhibition of cardiac and smooth muscle contractility?
calcium-channel blockers
What are examples of calcium-channel blockers that affect the urinary system?
amlodipine, verapamil, nifedipine, diltiazem
What do direct-acting arteriole vasodilators do?
relax smooth muscles of blood vessels causing vasodil
What kind of drug relaxes smooth muscles of blood vessels causing vasodil?
direct-acting arteriole vasodilators
What are examples of direct-acting arteriole vasodilators?
hydralazine and minoxidil
What are examples of alpha-adrenergic antagonists that affect the urinary system?
phenoxybenzamine, prazosin, nicergoline
What do diuretics do?
increase the volume of urine excreted by the kidneys and promote release of water from tissues, lower the fluid volume in tissues
What are the 5 types of diuretics?
thiazides, loop diuretics, potassium-sparing diuretics, carbonic anhydrase inhibitors, osmotics
What do thiazide diuretics do?
act directly on the renal tubules to block sodium reabsorption and promote chloride ion excretion
What type of diuretic acts directly on the renal tubules to block sodium reabsorption and promote chloride ion excretion?
thiazides
What are side effects of thiazide diuretics?
hypokalemia and cardiac dysfunction
What are examples of thiazide diuretics?
hydrochlorothiazide, chlorothiazide, hydroflumethiazide, bendroflumethiazide
Hydrochlorothiazide, chlorothiazide, hydroflumethiazide, bendroflumethiazide are examples of what?
thiazide diuretics
What do loop diuretics do?
influence the reabsorption action at the loop of Henle, resulting in tremendous diuresis
What type of diuretic influences the reabsorption action at the loop of Henle, resulting in tremendous diuresis?
loop diuretics
What are side effects of loop diuretics?
electrolyte imbalances (especially hypokalemia)
What is an example of a loop diuretic?
furosemide
What is furosemide an example of?
loop diuretic
What do potassium-sparing diuretics do?
act on the distal convulated tubules to promote sodium and water excretion and potassium retention
What type of diuretic acts on the distal convulated tubules to promote sodium and water excretion and potassium retention?
potassium-sparing diuretics
What is the main side effect of potassium-sparing diuretics?
hyperkalemia
What are examples of potassium-sparing diuretics?
spironolactone, triamterene, amiloride
Spironolactone, triamterene, amiloride are examples of what?
potassium-sparing diuretics
What do carbonic anhydrase inhibitors do?
block the action of the enzyme carbonic anhydrase, which is used by the body to maintain acid-base balance
Which diuretic blocks the action of the enzyme carbonic anhydrase, which is used by the body to maintain acid-base balance?
carbonic anhydrase inhibtors
What are carbonic anhydrase inhibitors used for?
decrease intraocular pressure with open-angle glaucoma
What diuretic is used to decrease intraoclar pressure with open-angle glaucoma.
carbonic anhydrase inhibitors
What is the main side effects of carbonic anhydrase inhibitors?
metabolic acidosis
What are examples of carbonic anhydrase inhibitors?
acetazolamide and dichlorphenamide
What do osmotic diuretics do?
increase the osmolality (concentration) of the urine filtrate in the renal tubules, resulting in the excretion of chloride, potassium, and water
What kind of diuretics increase the osmolality (concentration) of the urine filtrate in the renal tubules, resulting in the excretion of chloride, potassium, and water?
osmotic diuretics
What are osmotic diuretics used for?
to prevent kidney failure and to decrease intracranial and intraocular pressure
What kind of diuretics are used to prevent kidney failure and to decrease intracranial and intraocular pressure?
osmotic diuretics
What are side effects of osmotic diuretics?
fluid/electrolyte imbalance and vomiting
What are examples of osmotic diuretics?
mannitol and glycerin
What are uroliths?
abnormal mineral masses in the urinary system
What are abnormal mineral masses in the urinary system called?
urolith
What are the drug categories used to treat uroliths?
urinary acidifiers, urinary alkalinizers, xanthine oxidase inhibitors
What are urinary acidifiers used for?
to produce acid urine, which dissolves and helps prevent formation of struvite uroliths
What is used to produce acid urine, which dissolves and helps prevent formation of struvite uroliths?
urinary acidifiers
What are examples of urinary acidifiers?
methionine and ammonium chloride
What is methionine and ammonium chloride examples of?
urinary acidifers
What are urinary alkalinizers used for?
to treat calcium oxalate, cystine, and ammonium urate uroliths
What is used to to treat calcium oxalate, cystine, and ammonium urate uroliths?
urinary alkalinizers
What is an example of a urinary alkalinizer?
potassium citrate
What do xanthine oxidase inhibitors do?
decrease the production of uric acid, which helps decrease the formation of ammonium urate uroliths
What is used to decrease the production of uric acid, which helps decrease the formation of ammonium urate uroliths?
xanthine oxidase inhibitors
What are two things that may cause urinary incontinence?
neurologic disorders and non-neurologic disorders
What is urinary incontinence caused by neurologic disorders result from?
trauma to the spinal cord, tumors of the nervous system, or degeneration of the nervous system tracts
What is urinary incontinence caused by non-neurologic disorders result from?
hormone-responsive, stress, urge, ectopic ureter formation, or urinary bladder over-distention
What are the two types of drugs used to treat neurologically caused incontinence?
cholinergic agonists and anticholinergics
What do cholinergic agonists treat animals with neurologically caused urinary incontinence?
urinary retention, promote voiding of urine from the urinary bladder (relaxation of the urinary bladder)
What do anticholinergic treat animals with neurologically caused urinary incontinence?
block binding of ACh to its receptor site, causing muscle relaxation (promote urine retention)
What is an example of a cholinergic agonist used to treat neurologically caused urinary incontinence?
bethanechol
What are examples of a anticholinergic used to treat neurologically caused urinary incontinence?
propantheline, dicyclomine, butylhyoscine
How do alpha-adrenergic antagonists help treat neurologically caused urinary incontinence?
decrease the tone of internal urethral sphincters and are used to treat over-distention of the bladder (treat urinary retention)
What are examples of alpha-adrenergic antagonists used to treat neurologically caused urinary incontinence?
phenoxybenzamine, prazosin, nicergoline
What are used to treat non-neurologically caused urinary incontinence?
hormones (estrogen and testosterone)
What is an example of estrogen used to treat non-neurologically caused urinary incontinence?
diethylstilbestrol
What are examples of testosterone used to treat non-neurologically caused urinary incontinence?
testosterone cypionate and testosterone propionate
What are four purposes of the cardiovascular system?
distribute metabolites and O2, collect wastes and CO2, thermoregulation, hormone distribution
What is systole?
contraction of heart chambers
What is diastole?
relaxation of heart chambers
What are types of cardiovascular drugs?
positive inotropic drugs, negative inotropic drugs, positive chronotropic drugs, negative chronotropic drugs, positive dromotropic drugs, negative dromotropic drugs
What do positive inotropic drugs do?
increase the force of myocardial contraction
What type of cardiovascular drug increases the force of myocardial contraction?
positive inotropic drugs
What do negative inotropic drugs do?
decrease the force of myocardial contraction
What type of cardiovascular drug decreases the force of myocardial contraction?
negative inotropic drugs
What do positive chronotropic drugs do?
increase heart rate by altering the rate of impulse formation at the SA node
What type of cardiovascular drug increases heart rate by altering the rate of impulse formation at the SA node?
positive chronotropic drugs
What do negative chronotropic drugs do?
decrease heart rate by altering the rate of impulse formation at the SA node
What type of cardiovascular drug decreases heart rate by altering the rate of impulse formation at the SA node?
negative chronotropic drugs
What do positive dromotropic drugs do?
increase the conduction of electrical impulses
What type of cardiovascular drug increases the conduction of electrical impulses?
positive dromotropic drugs
What do negative dromotropic drugs do?
decreases the conduction of electrical impulses
What type of cardiovascular drug decreases the conduction of electrical impulses?
negative dromotropic drugs
What are examples of positive inotropes?
cardiac glycosides, catecholamines, benzimidazole-pyridazinones
What are cardiac glycosides, catecholamines, benzimidazole-pyridazinones an example of?
positive inotropes
What do cardiac glycosides do?
increase the strength of cardiac contractions, decrease heart rate, have an antiarrhythmic effect, and decrease signs of dyspnea
What are cardiac glycosides used to treat?
CHF, atrial fibrillation, supraventricular
What are side effects of cardiac glycosides?
anorexia, vomiting, diarrhea, cardiac arrhythmias
What are examples of cardiac glycosides?
digoxin and digitoxin
What are digoxin and digitoxin an example of?
cardiac glycosides
What do catecholamines do?
increase the force and rate of myocardial contraction, constrict peripheral blood vessels, and increase blood glucose levels
What are examples of catecholamines?
epinephrine, dopamine, dobutamine, isoproterenol
What is epinephrine, dopamine, dobutamine, isoproterenol examples of?
catecholamines
What do benzimidazole-pyridazinones do?
increase force of contraction and cause widening of blood vessels
What kind of positive inotrope increases force of contraction and cause widening of blood vessels?
benzimidazole-pyridazinones
What kind of positive inotrope increases the force and rate of myocardial contraction, constrict peripheral blood vessels, and increase blood glucose levels?
catecholamines
What kind of positive inotrope increases the strength of cardiac contractions, decrease heart rate, have an antiarrhythmic effect, and decrease signs of dyspnea?
cardiac glycosides
What are side effects of benzimidazole-pyridazinones?
anorexia, lethargy, diarrhea, dyspnea
What is an example of a benzimidazole-pyridazinone?
pimobendan (Vetmedin)
What are types of antiarrythmic drugs?
local anesthetics, membrane stabilizers, beta-adrenergic blockers, action potential prolongation drugs, calcium-channel blockers
What are Class 2 antiarrythmic drugs?
beta-blockers
What do vasodilators do?
dilate arteries and/or veins, which alleviates vessel constriction and improves cardiac output
What are examples of vasodilators?
angiotension-converticing enzyme inhibitors, arteriole dilators, venodilators, combined vasodilators
What does mastication mean?
chewing
What does deglutition mean?
swallowing
What are the three parts of the intestine in order?
duodenum, jejunum, ileum
How are most antiemetics given?
parenterally
What are some examples of types of antiemetics?
phenothiazine derivatives, antihistamines, anticholinergics, procainamide derivatives, serotonin receptor antagonists, neurokinin receptor antagonist
What do phenothiazine derivatives do?
inhibit dopamine in the chemoreceptor trigger zone, thus decreasing the stimulation to vomit
What are some indications to use phenothiazine derivatives?
motion sickness
What are examples of phenothiazine derivatives used as antiemetics?
acepromazine, chlorpromazine, prochlorperazine
What do procainamide derivatives do?
blocking the CRTZ and peripherally by speeding gastric emptying, strengthening cardiac sphincter tone, increasing the force of gastric contractions
What kind of animals should you not use procainamide derivatives in?
animals with GI obstructions, GI perforation, or GI hemorrhage
What is an example of procainamide derivatives used as an antiemetic?
metoclopramide (Reglan)
Metoclopramide (Reglan) is an example of what type of antiemetic?
procainamide derivatives
What are examples of antihistamines used as an antiemetic?
trimethobenzamide, dimenhydrinate, diphenhydramine (benadryl)
What is Cerenia?
maropitant citrate
What is maropitant citrate?
Cerenia
When is activated charcoal given?
if emesis is contraindicated
When should vomiting not be induced?
if caustic substances have been ingested
What are centrally acting emetics?
apomorphine (IV or mucosal) or xylazine (Cats)
What are peripherally acting emetics?
ipecac syrup, home remedies
What are categories of antiulcer drugs?
antacids, histamine-2 receptor antagonists, mucosal protective drugs, prostaglandin analogs, and proton pump inhibitors
What do antacids do?
promote ulcer healing by neutralizing HCl and reducing pepsin activity
How long should you wait before or after giving prostanglandins before giving other drugs?
1-2 hours
Antacids can be ____ or ____.
systemic, non-systemic
What are examples of systemic antacids?
sodium bicarbonate and calcium carbonate
What kind of antiulcer drugs are sodium bicarbonate and calcium carbonate an example of?
systemic antacids
What are examples of nonsystemic antacids?
magnesium hydroxide (milk of magnesia), aluminum/magnesium hydroxide, aluminum hydroxide
What kind of antiulcer drugs are magnesium hydroxide (milk of magnesia), aluminum/magnesium hydroxide, aluminum hydroxide examples of?
nonsystemic antacids
What do histamine-2 receptor antagonists do?
prevent acid reflux by competitively blocking the H2 receptors of the parietal cells in the stomach, thus reducing gastric acid
What are examples of histamine-2 receptor antagonists?
Cimetidine (Tagamet), Ranitidine (zantac), and Famotidine (Pepcid)
What kind of antiulcer drugs are Cimetidine (Tagamet), Ranitidine (zantac), and Famotidine (Pepcid) examples of?
histamine-2 receptor antagonists
What do mucosal protective drugs do?
combine with protein to form an adherent substance that covers the ulcer and protects it from stomach acid and pepsin
What is an example of a mucosal protective drug?
sucralfate
What kind of antiulcer drug is sucralfate?
mucosal protective drug
What do prostaglandin analogs do?
suppress gastric secretions and increase mucus production in the GI tract
What kind of antiulcer drug suppresses gastric secretions and increase mucus production in the GI tract?
prostaglandin analogs
What kind of antiulcer drug combines with protein to form an adherent substance that covers the ulcer and protects it from stomach acid and pepsin?
mucosal protective drug
What kind of antiulcer drug prevents acid reflux by competitively blocking the H2 receptors of the parietal cells in the stomach, thus reducing gastric acid?
histamine-2 receptor antagonists
What kind of antiulcer drug promotes ulcer healing by neutralizing HCl and reducing pepsin activity?
antacid
What kind of antiulcer drug is usually given to animals taking NSAIDs?
prostaglandin analogs
What is an example of prostaglandin analogs?
misoprostol
Misoprostol is an example of which antiulcer drug?
prostaglandin analogs
What do proton pump inhibitors do?
bind irreversibly to the H+-K+-ATPase enzyme on the surface of parietal cells of the stomach; this inhibits hydrogen ion transport into the stomach so that it cannot secrete HCl
What kind of antiulcer drug binds irreversibly to the H+-K+-ATPase enzyme on the surface of parietal cells of the stomach; this inhibits hydrogen ion transport into the stomach so that it cannot secrete HCl?
proton pump inhibitors
What are examples of proton pump inhibitors?
omeprazole (Prilosec) and lansoprazole
Omeprazole (Prilosec) and lansoprazole are examples of what kind of antiulcer drug?
proton pump inhibitors
What do antifoaming drugs do?
reduce or prevent the formation of foam
How are antifoaming drugs administered?
as solutions by stomach tube
What are examples of antifoaming drugs?
poloxalene and polymerized methyl silicone
Poloxalene and polymerized methyl silicone are examples of what?
antifoaming drugs
What do antidiarrheals do?
decrease peristalsis, which allows fluid absorption from the intestinal contents
What are examples of antidiarrheals?
anticholinergics, protectants/adsorbents, opiate-related agents, probiotics, metronidazole
What are anticholinergics used to treat when it comes to antidiarrheals?
tenemus and vomiting
What are side effects of anticholinergics when used for antidiarrheals?
dry mucous membranes, urine retention, tachycardia, constipation
What are examples of adsorbents used as an antidiarrheal?
bismuth subsalicylate, kaolin/pectin, activated charcoal
What are side effects of adsorbents?
constipation
How do opiate-related agents control diarrhea?
by decreasing both intestinal secretion and the flow of feces and increasing segmental contractions
What are examples of opiate-related agents control diarrhea?
loperamide, diphenoxylate, paregoric
What are side effects of opiate-related agents used as an antidiarrheal?
CNS depression, ileus, urine retention, bloat, and constipation
T or F. Probiotics must be refrigerated to maintain the viability of the bacteria.
True.
What is an antibiotic used to treat diarrhea?
metronidazole
What do laxatives do?
loosen the bowel contents and encourages evacuation of stool
What kind of laxatives are harsher laxatives?
cathartics
What are the four types of laxatives?
osmotic, stimulant, bulk-forming, emollient
What do osmotic laxatives do?
pull water into the colon and increase water content in the feces, thereby increasing bulk and stimulating peristalsis
What kind of laxative pulls water into the colon and increase water content in the feces, thereby increasing bulk and stimulating peristalsis?
osmotic
What are examples of osmotic laxatives?
lactulose, sodium phosphate w/ sodium biphosphate (fleet enema), magnesium sulfate (epsom salts), magnesium hydroxide (milk of magnesia)
Lactulose, sodium phosphate w/ sodium biphosphate (fleet enema), magnesium sulfate (epsom salts), magnesium hydroxide (milk of magnesia) are examples of what kind of laxative?
osmotic
What do bulk-forming laxatives do?
absorb water into the intestine, increase fecal bulk, and stimulate peristalsis, resulting in large, soft stool production
What kind of laxative absorbs water into the intestine, increase fecal bulk, and stimulate peristalsis, resulting in large, soft stool production?
bulk-forming
Are bulk-forming laxatives systemically absorbed?
no
What are examples of bulk-forming laxatives?
psyllium hydrophilic mucilloid (Metamucil), polycarbophin, bran
Psyllium hydrophilic mucilloid (Metamucil), polycarbophin, bran are examples of what kind of laxative?
bulk-forming
What are examples of emollients?
docusate sodium, docusate calcium, docusate potassium, mineral oil, and petroleum products (Laxatone)
Docusate sodium, docusate calcium, docusate potassium, mineral oil, and petroleum products (Laxatone) are examples of what kind of laxative?
emollient
What do prokinetic agents do?
increase the motility of parts of the GI tract to enhance movement of material through it
What are types of prokinetic agents?
parasympathomimetics, dopaminergic antagonists, serotonergic agents
What do serotonin antagonist antihistamines do?
promote appetite by inhibition at the serotoninergic receptors which control satiety
What are side effects of serotonin antagonist antihistamines?
sedation and dry mouth
What is an example of serotonin antagonist antihistamines?
cyproheptadine
Cyproheptadine is an exampe of what?
serotonin antagonist antihistamines
What do antisialogues do?
decrease salivary flow
What are the two categories that analgesics fall into?
narcotics and non-narcotics
What are the two main groups of anti-inflammatory drugs?
steroidal and non-steroidal
What do steroidal anti-inflammatory drugs do?
block the action of phospholipase
What group of anti-inflammatory drugs block the action of phospholipase?
steroidal
What group of anti-inflammatory drugs block the action of cyclooxygenase?
non-steroidal
What do non-steroidal anti-inflammatory drugs do?
block the action of cyclooxygenase
Corticosteroids are homones produced by what?
adrenal cortex
What do glucocorticoids have anti-inflammatory effects?
their inhibition of phospholipase
What do glucocorticoids do to inhibit phospholipase?
raise the concentration of liver glycogen and increase blood glucose levels
What do glucocorticoids affect?
carbohydrate, protein, fat metabolism
What are glucocorticoids regulated by?
negative feedback
What are examples of short-acting glucocorticoids?
cortisone and hydrocortisone
Cortison and hydrocortisone are examples of why kind of glucocorticoids?
short-acting
What are examples of intermediate-acting glucocorticoids?
prednisone, prednisolone, methylprednisolone, triamcinolone, prednisolone sodium succinate, methylprednisolone acetate
Prednisone, prednisolone, methylprednisolone, triamcinolone, prednisolone sodium succinate, methylprednisolone acetate were examples of what kind of glucocorticoids?
intermediate-acting
What are examples of long-acting glucocorticoids?
dexamethasone, betamethasone, fluocinolone
Dexamethasone, betamethasone, fluocinolone are examples of what kind of glucocorticoids?
long-acting
How long do short acting glucocorticoids last for?
less than 12 hours
How long do intermediate acting glucocorticoids last for?
12-36 hours
How long do long acting glucocorticoids last for?
over 36 hours
How may glucocorticoids be given?
orally, parenterally, topically
What are benefits of using glucocorticoids?
reduce inflammation, relieve pruritis, reduce tissue damage, reduce scarring by delaying wound healing
What are some drawbacks of glucocorticoid use?
delay wound healing, increase risk of infection, may cause GI ulceration and bleeding, increase the risk of corneal ulceration if corneal damage exists, may induce abortion in some species
Why should you taper animals off glucocorticoids?
to prevent iatrogenic Addison’s disease
What should be tapered off to prevent iatrogenic Addison’s disease?
glucocorticoids
If an animal has a corneal ulcer, what should you not use?
glucocorticoids
What is Cox-1 involved with?
stomach, platelet function
What is Cox-2 involved with/
inflammation
What are side effects of NSAIDs?
GI ulceration and bleeding, bone marrow suppression, LV & KD problems
How do NSAIDs work?
inhibiting cyclooxygenase
What is aspirin?
analgesic, antipyretic, anti-inflammatory, reducer of platelet aggregation
What animal should aspirin be used with caution in?
cats
What is another name for aspirin toxicity?
salicylate toxicity
What is another name for salicylate toxicity?
aspirin toxicity
What are signs of salicylate/aspirin toxicity?
GI problems, respiratory problems, neurological problems, bleeding problems, kidney failure
What type of anti-inflammatory is pyrazolone derivatives?
NSAID
What do pyrazolone derivatives do?
inhibit prostaglandin synthesis
Pyrazolone derivatives are used for what?
musculoskeletal pain in horses
What is flunixin meglumine?
banamine
What is banamine?
flunixin meglumine
What does Flunixin meglumine do?
inhibit cyclooxygenase
What is flunixin meglumine used for?
cattle and horses for colic pain (not really musculoskeletal)
What does diclofenac sodium do?
inhibit both COX-1 and COX-2
Are side effects minimal in diclofenac sodium?
yes
What is diclofenac sodium used for?
osteoarthritis for use in hock, knee, fetlock and pastern joints of horse
What do propionic acid derivatives do?
block both cyclooxygenase and lipoxygenase
What are examples of propionic acid derivatives?
ibuprofen, ketoprofen, carprofen, naproxen
Ibuprofen, ketoprofen, carprofen, and naproxen are examples of what kind of NSAID?
propionic acid derivatives
What do propionic acid derivatives do?
block both cyclooxygenase and lipoxygenase
What kind of NSAID blocks both cyclooxygenase and lipoxygenase?
propionic acid derivatives
What are side effects of propionic acid derivatives?
GI problems, renal dysfunction, possible liver toxicities
What kind of pain are propionic acid derivatives used to treat?
musculoskeletal pain, post-op
What do indol acetic acid derivatives do?
inhibit cyclooxygenase (more selective for COX-2)
What type of NSAID inhibits cyclooxygenase (more selective for COX-2)?
indol acetic acid derivates
What is an example of an indol acetic acid derivative?
etodolac
Etodolac is an example of what kind of NSAID?
indol acetic acid derivative
What do COX-2 inhibitors do?
inhibit cyclooxygenase-2 without interfering with the protective cyclooxygenase-1
What type of NSAID inhibits cyclooxygenase-2 without interfering with the protective cyclooxygenase-1?
cox-2 inhibitors
What are examples of cox-2 inhibitors?
deracoxib (Deramaxx), firocoxib (Previcox), meloxicam (Metacam)
Deracoxib (Deramaxx), firocoxib (Previcox), meloxicam (Metacam) are examples of what kind of NSAID?
cox-2 inhibitors
What are the 5 hallmarks of inflammation?
heat, redness, swelling, pain, loss of function
What are side effects of cox-2 inhibitors?
anorexia, vomiting, lethargy, potentially KD and LV dysfunction
What do dual-pathway NSAIDs do?
block arachidonic acid cycle (both cyclooxygenase and lipoxygenase pathways)
What type of NSAID blocks arachidonic acid cycle (both cyclooxygenase and lipoxygenase pathways)?
dual-pathway NSAIDs
What is an example of a dual-pathway NSAID?
tepoxalin (Zubrin)
Tepoxalin is an example of what type of NSAID?
dual-pathway NSAID
What kind of properties does piroxicam have?
anti-inflammatory, analgesic, antipyretic
What is piroxicam used for?
an adjunct treatment of urinary bladder transitional cell carcinoma
What NSAID is used as an adjunct treatment of urinary bladder transitional cell carcinoma?
Piroxicam
What is some information about piroxicam?
has a very long half life, GI ulcers, may have teratogenic effects
What is Buscopan used for?
as an antispasmodic, for colic in horses
What is DMSO?
dimethyl sulfoxide
What does DMSO do?
inactivates superoxide radicals produced by inflammation
What does dimethyl sulfoxide do?
inactivates superoxide radicals produced by inflammation
What is dimethyl sulfoxide able to do?
penetrate skin and serve as a carrier of other drugs
What is DMSO able to do?
penetrate skin and serve as a carrier of other drugs
What do glycosaminoglycans do?
form part of the extracellular matrix of cartilage
Define parasitism.
relationship between two different organisms in which one of the organisms benefits while the other is harmed
Do all parasites cause clinical signs in the animal?
no
Define endoparasites.
parasites that live within the body of the host and cause internal parasite infections
Define ectoparasites.
parasites that live on the body surface of the host and cause external parasite infestations
How do benzimidazoles work?
by interfereing with energy metabolism of the worm
What are examples of benzimidazoles?
fenbendazole, albendazole, mebendazole, oxibendazole, thiabendazole
What are side effects of benzimidazoles?
while uncommon, they are vomiting and diarrhea
Fenbendazole, albendazole, mebendazole, oxibendazole, thiabendazole are examples of what type of anti-parasitic?
Benzimidazoles
What is the brand name of fenbendazole?
Panacur
What are the types of antinematodals?
organophosphates, tetrahydropyrimidines, imidazothiazoles, piperazine, avermections and benzimidazoles
What do organophosphates do?
inhibit cholinesterase activity, causing ACh to remain active in the neuromuscular junction of the parasite
What kind of antinematodal inhibits cholinesterase activity, causing ACh to remain active in the neuromuscular junction of the parasite?
organophosphates
Organophosphates are ____ to parasites.
neurotixic
Is it possible for organophosphates to cause neurologic side effects in the host?
yes
What kind of parasites does organophosphates work on?
endo and ecto parasites
What kind of range of safety do organophosphates have?
narrow
You should not use organophosphates in what kind of dogs?
heartworm-positive dogs
What are examples of organophosphates?
dichlorvos and coumaphos
Dichlorvos and coumaphos are examples of what type of antinematodal?
organophosphates
What do Tetrahydropyrimidines do?
mimic the action of ACh and cause paralysis of the worm
What kind of antinematodal mimics the action of ACh and cause paralysis of the worm?
tetrahydropyrimidines
What are tetrahydropyrimidines effective against?
ascarids, pinworms, strongyles and hookworms
What are examples of tetrahydropyrimidines?
pyrantel pamoate (Nemex/Strongid), pyrantel tartrate, morantel tartrate
Pyrantel pamoate (Nemex/Strongid), pyrantel tartrate, morantel tartrate are examples of what kind of antinematodal?
tetrahydropyrimidines
What are side effects of tetrahydropyrimidines? Are they common?
increased respiration, profuse sweating, incoordination. no.
How do imidazothiazoles work?
by stimulating the nematode’s cholinergic nervous system, leading to paralysis of the parasite
What are imidazothiazoles effective against?
ascarids, strongyles, whipworms, hookworms
What is an example of an imidazothiazole?
levamisole
Levamisole is an example of what kind of antinematodal?
imidazothiazole
What is a side effect of imidazothiazoles?
transient foaming at the mouth
What does piperazine do?
blocks neuromuscular transmission in the parasite
What is piperazine effect against?
ascarids
What do avermectins do?
bind to certain chloride channels in the parasite nerve and muscle cells, causing paralysis and death of the parasite
What are examples of avermectins?
ivermection (Ivomec) and moxidectin (Quest)
What are avermectins not effective against?
cestodes or trematodes
What are some side effects of avermectins? Common?
mydriasis, ataxia, tremors, depression. No.
What are the four types of heartworm prevention?
Ivermectin (heartgard), Milbemycin (interceptor, sentinel), Selamectin (revolution), Moxydectin (proheart)
What is Ivermectin also known as?
heartgard
What is milbemycin also known as?
interceptor, sentinel
What is selamectin also known as?
revolution
What is moxydectin also known as?
pro heart
What is heartgard also known as?
ivermectin
What is interceptor/sentinel also known as?
milbemycin
What is revolution also known as?
selamectin
What is pro heart also known as?
moxydectin
What is sulfadimethoxine also known as?
albon
What is albon also known as?
sulfadimethoxine
What do penicillins have?
a beta-lactam structure that interferes with bacterial cell wall synthesis
What does penicillin’s spectrum of activity depend on?
the type of penicillin
Which two penicillins are narrow-spectrum gram positive antibiotics?
Penicillin G and Penicillin V
How is Penicillin G given?
parenterally
How is Penicillin V given?
orally
What are examples of broader-spectrum penicillins?
amoxicillin, ampicillin, methicillin, carbenicillin, ticarcillin
What are potentiated penicillins?
penicillins that are chemically cobined with another drug to ehance the effects of both
What is an example of a potentiated penicillin? What does it do?
amoxicillin + clavulanic acid. it binds to beta-lactamase to prevent the beta-lactam ring from being destroyed.
What are cephalosporins?
semi-synthetic, broad spectrum antibiotics that are structurally related to the penicillins
Do cephalosporins have a beta-lactam ring?
yes
What are examples of cephalosporins?
cefadroxil (cefa-drops), cephalexin (keflex), ceftiofur (naxcel), cefpodoxime (simplicef)
With cephalosporins, as the number of the generation increases, the spectrum of activity ____.
broadens
What do tetracyclines do?
interfere with the production of protein in bacterial cells
What are side effects of tetracyclines?
nephrotoxicity, and ototoxicity
What are examples of tetracyclines?
tetracycline, oxytetracycline, doxycycline, minocycline, chlortetracycline
What does bacitracin do?
disrupts the bacterial cell wall and is effective against gram-positive bacteria
How is bacitracin used?
topically or as a feed additive
How does polymyxin B work?
by attacking the cell membrane of bacteria
What do aminoglycosides do?
interfere with the production of protein in bacterial cells
Do aminoglycosides work on gram pos or gram neg bacteria?
gram neg
Why are aminoglycosides given parenterally?
not absorbed well from the GI tract
What are side effects of aminoglycosides?
nephrotoxicity and ototoxicity
What are examples of aminoglycosides?
gentamicin, neomycin, amikacin, tobramycin, and dihydrostreptomycin
What are fluoroquinolones?
antibiotics with fluorine bound to the quinolone base, which increases the drog’s potency, spectrum of activity, and absorption
What are side effects of fluoroquinolones?
development of bubble-like cartilage lesions in growing dogs, crystalluria
What are examples of fluroquinolones?
enrofloxacin (Baytril), ciprofloxacin, orbifloxacin, difloxacin, marbofloxacin, sarafloxacin
What does chloramphenicol do?
interferes with the production of protein in bacterial cells
What is chloramphenicol?
a broad-spectrum antibiotic that penetrates tissues and fluids well (including the eyes and CNS)
Which antibiotic should you use caution when handling?
chloramphenicol
Which antibiotic has toxic side effects (bone marrow depression) that extremely limits its use?
chloramphenicol
Can you use chloramphenicol in food animals?
no
What does florfenicol do?
interferes with the production of protein in bacterial cells
What is florfenicol?
a synthetic, broad-spectrum antibiotic
What are side effects of florfenicol?
local tissue reaction (possible loss of tissue at slaughter), inappetence, decreased water consumption, diarrhea
What do macrolides do?
interfere with the production of protein in bacterial cells
What are macrolides?
braod-spectrum antibiotics that have a large molecular structure
What are macrolides used to treat?
penicillin-resistant infections or in anials that have allergic reactions to penicillins
What are examples of macrolides?
erythromycin, tylosin, tilmicosin
Erythromycin, tylosin, tilmicosin are examples of what kinds of antibiotics?
macrolides
What do lincosamides do?
interfere with the production of protein in bacterial cells
What are lincosamides?
narrow-spectrum, gram-positive antibiotics
What are side effects of lincosamides?
GI problems
What are examples of lincosamides?
clindamycin, pirlimycin, lincosamide
Clindamycin, pirlimycin, lincosamide are examples of what kind of antibiotic?
lincosamides
What are nitrofurans?
broad-spectrum antibiotics
What are nitrofurans used to treat?
treat wounds and urinary tract infections
What are examples of nitrofurans?
furazolidone, nitrofurazone, nitrofurantoin
Furazolidone, nitrofurazone, nitrofurantoin are examples of what kind of anibiotic?
nitrofurans
How do nitroimiazoles work?
by disrupting DNA and nucleic acid synthesis
What is an example of a nitroimiazole?
metronidazole
Nitroimiazoles have what kind of activity?
antibacterial and antiprotozoal
What does rifampin do?
disrupts RNA synthesis
What is rifampin?
a broad-spectrum antibiotic used in conjunction with other antibiotics
What are examples of protein synthesis agents?
chloramphenicol, florfenicol, macrolides, lincosamides
What are examples of anticestodals?
praziquantel (droncit), epsiprantel (cestex), fenbendazole (Panacur)
How does praziquantel work?
by increasing the cestode’s cell membrane permeability (this disintegrates the worm’s outer tissue covering)
How does epsiprantel work?
causes disintegration of the cestod
What species does epsiprantel work on?
taenia and diplydium species
What are examples of antitrematodals?
clorsulon, albendazole, praziquantel
How does clorsulon work?
by inhibiting the trematode’s enzyme systems for energy production
What is clorsulon effective against?
Fasciola hepatica
How does albendazole work?
interferes with the energy metabolism of the worm
What kind of trematode is praziquantel effective against in dogs and cats?
lung trematodes
What are the three stages of management of heartworm disease?
- preventing third-stage larvae from reaching maturity (preventative)
- adulticide therapy (none approved in cats)
- eradication of circulating microfilariae after infection
What is an example of an adulticide therapy?
melarsomine (immidicide)
What is another name for melarsomine?
immidicide
What is another name for immidicide?
melarsomine
Where is melarsomine given?
in the epaxial muscles
What is melarsomine?
an arsenic compound
What are side effects of melarsomine?
injection site pain/swelling, respiratory signs, death
What is another name for imidacloprid?
Advantage
What is another name for Advantage?
imidacloprid
What is another name for imidacloprid + permethrin?
Advantix
What is another name for Advantix?
imidacloprid = permethrin
What is another name for fipronil?
frontline
What is another name for frontline?
fipronil
What is another name for nitenpyram?
capsar
What is another name for capstar?
nitenpyram
What is another name for fluralaner?
bravecto
What is another name for bravecto?
fluralaner
What is another name for afoxolaner?
nexgard
What is another name for nexgard?
afoxolaner
What is another name for dinotefuran/pyriproxyfen?
vectra
What is another name for vectra?
dinotefuran/pyriproxyfen
What are pyrethroids?
a group of quick-kill chemicals in flea products
T or F. All flea products also control ticks.
False
What are the two hormones involved in metabolism that the thyroid gland secretes?
Thyroxine (T4), Triiodothyronine (T3)
What is hypothyroidism?
a deficiency of thyroid hormone
What are signs of hypothyroidism?
decreased coat and hair luster, weight gain, listlessness, intolerance to cold, reproductive failure
How is hypothyroidism diagnosed?
by measuring serum total T4 or T3 by a thyroid stimulation test or by the thyrotropin-releasing hormone rsponse test
What are teh two things that hypothyroid animals are treated with?
levothyroxine (T4), liothyronine (T3)
What is hyperthyroidism?
an increased production of thyroid hormone
Whatare signs of hyperthyroidism?
increase thirst, weight loss, increased stool production, restlessness, tachycardia
What are hyperthyroid animals treated with?
antithyroid drugs or surgical removal
Radioactive isotopes of iodine ____ destroy the thyroid gland.
I-131
Why would methimazole be used in hyperthyroid animals?
it interferes with the incorporation of iodine in the molecules of T4 and T3
What is Addison’s disease?
adrenocorticol insufficiency, a progressive condition associated with adrenal atrophy
What are signs of Addison’s disease?
lethargy, weakness, anorexia, vomiting, diarrhea, PU/PD
How is Addison’s disease diagnosed?
ACTH stimulation test
What does treatment of Addison’s disease involve?
a long-acting mineralocorticoid and corticosteroids
What is Cushing’s disease?
hyperadrenocorticism, characterized by excessive glucocorticoid production due to prolonged administration of adrenocortical hormones, adrenocortical tumors, or pituitary disorders
What are signs of cushing’s disease?
PU/PD, hair loss, pendulous abdomen
How is cushing’s disease diagnosed?
ACTH stimulation test or low-dose dexamethazone suppression test
What does treatment of cushing’s disease involve?
destroying part of the adrenal cortex
What are examples of drugs used to treat cushing’s diesease?
mitotane, trilostane, keoconazole, selegiline, cyproheptadine
What are gonadotropins?
hormones that stimulate the gonads
What are examples of gonadotropins?
LH, FSH, GnRH
What is PMSG is used for?
produce estrus and ovulation in horses and as a follicle stimulant in many species (superoovulation)
What does PMSG stand for?
pregnant mare serum gonadotropin
What does GnRH stand for?
gonadorelin
What is GnRH used to treat?
follicular cysts in cattle, for estrus synchronization in cattle, and to induce estrus in small animals
What does hCG stand for?
human chorionic gonadotropin
What is hCG used to treat?
cystic ovaries in cattle, to detect/treat? cryptorchidism in dogs, to get infertile bitches to cycle, and to make breeding mares ovulate
What are androgens?
male hormones
Where is testosterone made?
in the interstitial cells of the testes
What is testerone used to treat?
conditions such as infertility and hypogonadism, produce estrus detectors, and for testosterone-responsive urinary incontinence in dogs
Is testerone a controlled drug?
yes it’s a class 3
What is are examples of testosterone?
testosterone cypionate in oil, testosterone enaanthate in oil, testosterone propionate in oil, danazol
What are examples of androgens?
testosterone, mibolerone, zinc gluconate with arginine,
How does mibolerone work?
it blocks the release of LH from the anterior pituitary gland, therefore the follicle does not fully develop
What male hormones blocks the release of LH from the anterior pituitary gland, therefore the follicle does not fully develop?
mibolerone
What is mibolerone used for?
to prevent estrus in adult female dogs and the treatment of false pregnancies (pseudocyesis)
What els is zinc gluconate with arginine known as?
neutersol and zeuterin
What is zinc gluconate with arginine?
a chemical sterilant approved for use in 3-10 month old male dogs. it’s a nonsurgical neutering drug
What type of injection is zinc gluconate with arginine?
intratesticular
What are examples of female hormones?
estrogen, progesterone, prostaglandins
What does estrogen do?
promotes female sex characteristics and stimulates and maintains the reproductive tract
Why are synthetic estrogens used in dogs for?
prevent implantation of fertilized ova and to correct urinary incontinence, vaginitis, and dermatitis
Why are synthetic estrogens used in cattle?
to treat persistent corpus luteum, aid in expulsion of retained placentas and mummified feti, to promote weight gain
Why are synthetic estrogens used in horses?
to induce estrus in the non breeding season
What female hormone is used to prevent implantation of fertilized ova and to correct urinary incontinence, vaginitis, and dermatitis in dogs?
synthetic estrogen
What female hormone is used to treat persistent corpus luteum, aid in expulsion of retained placentas and mummified feti, to promote weight gain in cattle?
synthetic estrogen
What female hormone is used to induce estrus in the non breeding season in horses?
synthetic estrogen
What are some examples of estrogen?
estradiol cypionate, diethylstilbestrol
Estradiol cypionate and diethylstilbestrol are examples of what kind of female hormone?
estrogen
What does progesterone do?
decreases uterine activity when a female is in estrus or pregnant
What female hormone decreases uterine activity when a female is in estrus or pregnant?
progesterone
What is progesterone (progestins) used for in dogs?
to block estrus
What is progesterone used for in cattle?
to synchronize breeding and birth cycles
What may progestins be used to treat?
behavior problems and some forms of dermatitis
What female hormone is used to block estrus in dogs?
progesterone
What female hormone is used to synchronize breeding and birth cycles in cattle?
progesterone
What are examples of progesterone?
megestrol acetate, medroxyprogesterone acetate, altrenogest, progesterone, melengestrol
Megestrol acetate, medroxyprogesterone acetate, altrenogest, progesterone, melengestrol are examples of what kind of female hormone?
progesterone
What do prostaglandings do?
causes lysis of the corpus luteum, which initiates a new estrus cycle
What are prostaglandins used for in small animals?
to treat pyometra, cause abortion, and induce parturition
What female hormone is used to treat pyometra, cause abortion, and induce parturition in small animals?
prostaglandins
What are prostaglandins used for in cattle?
estrus synchronization and inducing uterine contractions to facilitate emptying of the uterus
What female hormone is used for estrus synchronization and inducing uterine contractions to facilitate emptying of the uterus in cattle?
prostaglandins
What are prostaglandins used for in horses?
estrus synchronization
What female hormone is used for estrus synchronization in horses?
prostaglandins
What are examples of prostaglandins?
dinoprost tromethamine (Lutalyse), fluprostenol, cloprostenol sodium
Dinoprost tromethamine (Lutalyse), fluprostenol, cloprostenol sodium are examples of what type of female hormone?
prostaglandins
What are examples of hormonal growth promotants?
estradiol, testosterone, progesterone (used in combination with estradiol)
What are examples of synthetic hormones?
TBA, MGA, Zeranol
What are examples of anabolic steroids?
Stanozolol and Boldenone
How long do you have to keep a VFD copy?
2 years minimum
What is milk replacer considered as?
a feed
What are negative foodback loops?
more common, work in response to low or high levels of hormone in the body
What are positive feedback loops?
occur when hormone levels continue to rise in response to stimuli
What are examples of anterior pituitary hormones used in vet med?
Thyroid stimulating hormone (TSH), adrenocorticotropic hormone (ACTH), follicle stimulating hormone (FSH), luteinizing hormone (LH), growth hormone (GH)
What are examples of posterior pituitary hormones used in vet med?
antidiuretic hormone (ADH) and oxytocin
What is TSH used in the diagnosis of?
primary hypothyroidism
What is ACTH used for?
to stimulate the adrenal cortex to secrete corticosteroids in the diagnosis of adrenal cortex disease
What is GH used for?
to increase growth rate and feed use efficiency in livestock and increase milk production in dairy cows
Which anterior pituitary gland hormone is used in the diagnosis of primary hypothyroidism?
TSH
Which anterior pituitary gland hormone is used to stimulate the adrenal cortex to secrete corticosteroids in the diagnosis of adrenal cortex disease?
ACTH
Which anterior pituitary gland hormone is used to increase growth rate and feed use efficiency in livestock and increase milk production in dairy cows?
GH
What is ADH used for?
to diagnose and treat diabetes insipidus
What is oxytocin used for?
to aid in uterine contraction and induce labor in animals at term, expel the placenta, induce milk letdown, and as an adjunct therapy for animals with open pyometra
Which posterior pituitary gland hormones is used to diagnose and treat diabetes insipidus?
ADH
Which posterior pituitary gland hormones is used to aid in uterine contraction and induce labor in animals at term, expel the placenta, induce milk letdown, and as an adjunct therapy for animals with open pyometra?
oxytocin
What does the pancreas do?
secretes two hormones that help regulate blood glucose
What are the two hormones that the pancrease secretes?
insulin and glucagon
Insulin and glucagon are secreted from where?
the pancreas
What does insulin do?
responds to a rise in blood glucose and promotes the uptake and use of glucose for energy in cells
Which hormone from the pancreas responds to a rise in blood glucose and promotes the uptake and use of glucose for energy in cells?
insulin
What does glucagon do?
increases blood glucose levels by promoting the breakdown of glycogen into glucose
Which hormone from the pancreas increases blood glucose levels by promoting the breakdown of glycogen into glucose?
glucagon
What is diabetes mellitus?
a disease of fat, carbohydrate, and protein metabolism caused by lack of, or inefficient use of, insulin
What is a disease of fat, carbohydrate, and protein metabolism caused by lack of, or inefficient use of, insulin?
diabetes mellitus
What are some sources of insulin?
pork, synthetic, and recombinant forms
What is short-acting insulin used for?
initial treatment of diabetic ketoacidosis and to keep blood glucose stable
What are examples of short-acting insulin?
regular crystalline insulin and semilente insulin
What is intermediate-acting insulin used for?
to control blood glucose in uncomplicated cases of diabetes mellitus
What are examples of intermediate-acting insulin?
NPH and lente
What is long-acting insulin used for?
to control blood glucose for longer periods of time, especially in cats
What are examples of long-acting insulin?
protamine zinc insulin, ultralente
What kind of insulin can take a few days to achieve its maximal effect?
ultra long acting insulin
What are symptoms of insulin overdose?
seizures, lethargy, weakness, death
What is the treatment for insulin overdose?
do not give next dose of insulin, give karo syrup instead
What is an example of an oral hypoglycemic agent?
glipizide
What do oral hypoglycemic agents do?
stimulate pancreatic beta cells to secrete insulin
Do you need to have some pancreatic function with oral hypoglycemic agents?
yes
Are hypoglycemic agents more successful in cats or dogs?
cats
What are four categories of antifungals?
polyene antifungal agents, imidazole antifungal agents, antimetabolic antifungal agents, superficial antifungal agents
How do polene antifungals work?
by binding to the fungal cell membrane
What type of antifungal agent works by binding to the fungal cell membrane?
polyene antifungals
What are examples of polyene antifungals?
nystatin (used orally) and amphotericin B (used IV for systemic infections)
Amphotericin B is what?
extremely nephrotoxic, lighsensitive, can precipitate out of solution
How do imidazole antifungals work?
by causing leakage of the fungal cell membrane
What type of antifungal agents work by causing leakage of the fungal cell membrane?
imidazole antifungals
What are examples of imidazole antifungals?
ketoconazole, itraconazole, fluconazole, miconazole
How do antimetabolic antifungals work?
by interfering with the metabolism of RNA and proteins
What is an example of an antimetabolic antifungal?
flucytosine
How do superficial antifungals work?
by disrupting fungal cell division
What is an example of a superficial antifungal?
griseofulvin
Griseofulvin is what?
teratogenic
What is lyme sulfur used for?
to topically treat ringworm
What is lufenuron used for?
to treat ringworm in cats
How do antiviral drugs act?
by preventing viral penetration of the host cell or by inhibiting the virus’s production fo RNA or DNA
Are ther any antiviral drugs labeled for veterinary use?
no
What are some antiviral drugs used in vet med?
acyclovir, interferon, and lysine
What is acyclovir used for?
to treat ocular feline herpes virus infections
What does acyclovir do?
interfere with the virus’s synthesis of DNA
What does interferon do?
protects host cells from a number of different viruses
What is interferon used to treat?
ocular feline herpes virus infection and FeLV
What do disinfectants do?
kill or inhibit the growth of microorganisms on inanimate objects
What do antiseptics do?
kill or inhibit the growth of microorganisms on animate objects
Contact time is critical in what?
the efficacy of the product
What is SDS?
safety data sheets
What are types of disinfecting agents?
phenols, quaternary ammonium compounds, aldehydes, ethylene oxide, alcohols, halogens, biguanides
How do phenols work?
by destroying the selective permeability of cell membranes
What are phenols effective against?
gram-positive and gram-negative bacteria, fungi, some enveloped viruses
What is an example of a phenol?
lysol
How do quaternary ammonium compound work?
by concentrating at the cell membrane and dissolving lipids in the cell walls and membranes
What are quaternary ammonium compounds effective against?
gram pos and gram neg bacteria, fungi, enveloped viruses
What is an example of a quaternary ammonium compound?
roccal
How do aldehydes work?
by affecting protein structure
What are aldehydes effective against?
gram os and gram neg bacteria, fungi, viruses, bacterial spores
What are some examples of aldehydes?
formaldehyde, gluteraldehyde
How does ethylene oxide work?
by destroying DNA and proteins?
What is ethylene oxide used for?
a gas for chemical sterilization
What is ethylene oxide effective against?
gram pos and gram neg bacteria, fungi, viruses, bacterial spores
How do alcohols work?
by coagulating proteins and dissolving membrane lipids
What are alcohols effective against?
gram pos and gram neg bacteria, fungi, envelped viruses
How do halogens work?
by interfering with proteins and enzymes of the microbe
What does chlorine kill?
bacteria, fungi, viruses
What does iodine kill?
most classes of microbes if used at the proper concentration and exposure times
How do biguanides work?
by denaturing proteins
What are biguanides effective against?
gram pos and gram neg bacteria, fungi, enveloped viruses
What is an example of a biguanide?
chlorhexidine
Soaps and detergents have what?
limited bactericidal activity
What does hydrogen peroxide do?
damages proteins, kills anaerobic bacteria, can cause tissue damage
What are four reversal agents?
naloxone, atipamezole, yohimbine, tolazoline
What are examples of antidotes?
activated charcoal, calcium EDTA, dimercaprol, penicillamine, pralidoxime chloride (2-PAM), acetylsysteine, methylene blue, sodium thiosulfate, ethanol, vitamin K, antivenin
What is methylene blue used to treat?
nitrate toxicity
What is ethylene glycol used to treat?
ethanol
Do herbal supplements require FDA approval? Why?
No, they are considered food supplements
What is Ginkgo used for?
to reduce aging effects of the nervous system, to reduce hypertension, a general tonicqWhat are the active ingredients in ginkgo?
What are active ingredients in ginkgo?
ginkgo flavone glycosides, terpene lactones
What may ginkgo do?
inhibit cytochrome P450 and induce hypoglycemia
What is St. John’s Wort used for?
to treat behavior disorders, aggression, separation anxiety, OCD
What may St. John’s Wort do?
inhibit cytochrome P450, affect blood pressure, cause photosensitivity
What is the active compenent of St. John’s Wort? What does it do?
hyperforin, regulates the effects of serotonin
What is ginkgo also known as?
ginkgo biloba
What is ginkgo biloba also known as?
ginkgo
What is St. John’s Wort also known as?
hypericum perforatum
What is hypericum perforatum also known as?
St. John’s Wort
What is ginseng also known as?
Panax ginseng
What is panax ginseng also known as?
ginseng
What does ginseng do?
stimulate natural killer cell activity, increses energy, counters stress, inhances physical performaance
What is ginseng used to treat?
weight loss, anorexia, systemic infections
What may ginseng effect?
blood glucose levels, increase blood pressure and heart rate, increase GI motility, induce seizures at high levels
What is garlic also known as?
allium sativum
What is allium sativum also known as?
garlic
Garlic is believed to have what kind of properties?
anticarcinogenic
In garlic, what does allicin cause?
reduction of chloesterol, triglyceride levels and hypertension
What is garlic used to treat?
parasitic infections, fungal infections, respiratory problems, to acidify urine
What may garlic cause?
inhibition of platelet aggregation, prolonged bleeding times, GI upset, Heinz body anemia
What is echinacea also known as?
echinacia purpurea
In echinacea, what do fructofuranosides do?
contribute to tissue regeneration, regulation of the inflammatory response, a mild cortisone-like effect
What does echinacea stimulate?
phagocytosis and natural killer cell activity
What is echinacea used for?
to shorten the severity and duration of infections
What is evening primrose also known as?
oenothera biennis
What does evening primrose contain?
gamma-linolenic acid
What is evening primrose used to treat?
premenstrual syndrome, rheumatoid arthritis, diabetic neuropathy, eczema in humans
What are side effects of evening primrose?
loose stools and abdominal cramps
What may evening primrose do?
lower the seizure threshold on some animals on phenothiazine medications
What is goldenseal also known as?
hydrastis canadensis
What gives goldenseal it’s antibacterial and antiparasitic properties?
berberine
What is goldenseal used to treat?
bacterial and parasitic infections
What are side effects of Goldenseal?
cardiac problems, stimulation of the CNS and uterine contractions
What is cranberry also known as?
vaccinium macrocarpon
What does cranberry do?
interferes with the attachment of urinary pathogens to the urinary bladder wall
What is cranberry used to treat?
urinary tract infections
What are some side effects of cranberry?
diarrhea, stomach problems, development of kidney stones
What is valerian also known as?
valeriana officinalis
What do volatile oils in valerian do?
break down the inhibitory substance GABA
What is Valerian used to treat?
hyperactivity in dogs, for mild tranquilization, as a sleep aid
What are side effects of Valerian?
hepatotoxicity with long-term use and interaction with other depressant drugs
What is Hawthorn berry also known as?
crataegus oxyacantha
What is hawthorn berry used as?
a heart and valvular tonic typically in animals in the early stages of congestive heart failure
Why is hawthorn berry used in animals with kidney disease?
it’s ability to enhance blood flow
What is ginger also known as?
Zingiber officinale
How long before surgery do animals need to be off ginger?
one weeks
Why should you not use ginger in an animal with a temperature?
it raises body temperature
What is ginger used to treat?
intestinal disorders, motion sickness, gastric upset, artiritis
What is milk thistle also know as?
silybum marianum
What are milk thistle seeds used for?
to relieve congestion of the liver, spleen and kidneys
Milk thistle contains substances that ___.
are hepatoregenerative, hepatoprotective, reduce inflammation, have potent antioxidant effects
When should you not use herbs in animals?
pregnant or nursing animals, very young or very old
Why would proparacaine and tetracaine be used?
to help perform comprehensive eye exams or to remoe foreign material from the eye
What do mydriatics do?
dilate the pupil
What do cycloplegics do?
paralyze the ciliary muscles and minimize pain
What are exampes of mydriatics and cycloplegics?
atropine, homatropine, phenylephrine, tropicamide, epinephrine
What is glaucoma?
a group of diseases that increase intraocular pressure
Why do miotics do?
constrict the pupil
What are miotics used to treat? How?
open-angle glaucome, by increasing the outflor of aqueous humor
What is an example of a miotic?
pilocarpine
What do beta-adrenergic blockers do to the production of aqueous humor?
decreases it
How can prostaglandins treat glaucoma?
increasing outflow of aqueous humor
How do alpha-adrenergic agonists treat glaucoma?
reduce aqueous humor secretion
What is KCS?
a disease in which tear production is decreased
What does KCS result in?
mucopurulent conjunctivitis and corneal scarring/ulceration
What are some drugs sued to treat KCS?
artificial tears, antibiotic steroid preparations, lacrimogenic, cyclosporine
What are examples of systemic antipruritics?
cyclosporine (Atopica), oclacitinib (Apoquel)
What is seborrhea characterized by?
abnormal flaking or scaling of the epidermic
What do keratolytics do?
remove excess keratin and promote loosening of the outer layers of the epidermis
What are some drugs that are topically used to treat seborrhea?
sulfur, salicylic acid, coal tar, benzoyl peroxide, selenium sulfide
What are astringents?
agents that constrict tissues, decrease secretions
What are examples of astringents?
tannins, alcohol
What are antiseptics?
substances that kill or inhibit the growth of microbes on living tissues
What are examples of antiseptics?
alcohol, chlorhexidine
What are soaks and dressings?
substances applied to areas to draw out fluid or relieve itching
What are caustics?
substances that destroy tissues
What may fatty acid supplements do?
improve condition of skin and hair, and may reduce pruritis
What are examples of blood enhancing drugs?
iron and erythropoietin
What is erythropoietin?
a protein made by the kidneys that stimulates the differentiation of bone marrow stem cells to form red blood cells
What is an example of an erythropoietin product?
epogen
What is an erythropoietin product used to treat?
anemia in animals with chronic renal failure
What is an example of a thrombolytic drug?
streptokinase
Do anticoagulants break down existing clots?
No
Is heparin effective orally?
no
What are examples of parenteral hemostatic drugs?
Vitamin K, protamine sulfate
What are examples of topical hemostatic drugs?
silver nitrate, hemostat powder, gelfoam gelatin sponges, thrombogen topical thrombin solution
What are the 5 phases of the cell cycle and what do they do?
G1: enzymes needed for DNA synthesis are produced S: DNA synthesis and replication G2: RNA and protein synthesis M: mitosis phase G0: resting phase
Define growth fraction.
percentage of cancer cells that are actively dividing
A __ growth fraction occurs when cells are dividing rapidly.
high
When tumors age and enlarge, their growth fraction ___.
decreases
What is calculation of an antineoplastic drug dose based on?
body surface area in square meters
How does OSHA recommend antineoplastics be prepared?
under a vertical laminar hood
What is pulse dosing?
a method of delivering some types of chemotherapeutic agents that produces escalating levels of drugs early in the dose followed by a dose free interval
What do cell-cycle nonspecific antineoplastic agents do?
alkylating agents cross-link DNA to inhibit its replication
What are examples of cell-cycle nonspecific agents?
cyclophosphamide, cisplatin, chlorambucil, melphalan, carboplatin
Antitumor antibiotics inhibit what?
DNA, RNA, and protein synthesis
What are examples of antitumor antibiotics?
doxorubicin, dactinomycin, mitoxantrone
What do antitubulins do?
stop cancer cell division
What are examples of antitubulins?
vincristine and vinblastine
What do antimetabolites affect?
the S phase involving DNA synthesis
What are examples of antimetabolites used in cancer treatment?
methotrexate, 5-fluorouracil, cytarabine, azathoprine
What are the three types of interferon?
alpha, beta, gamma
What do colony stimulating factors do?
stimulate the growth, maturation and differentiation of bone marrow stem cells, treats neutropenia in dogs/cats
What is an example of a colony stimulating factor?
filgrastim
Monoclonal antibodies have what?
cytotoxic effects on tumor cells
Acemannan is what?
a potent stimulator of macrophage activity and is used to treat fibrosarcomas and mast cells in dogs/cats
Cyclosporine inhibits what?
the proliferation of T-lymphocytes
What does Azathioprine affect?
cells in the S phase of the cell cycle and also inhibits T and B lymphocytes
Cyclophosphamide interferes with what?
DNA and RNA replication, disrupting nucleic acid function
How do immunosuppressive drugs work?
by interfering with one of the stages of the cell cycle or by affecting cell messengers
Which immunosuppressive are cats more likely to develop severe side effects with?
azathiprine
What are side effects of cyclophosphamides?
bone marrow suppression, gastroenteritis, hemorrhagic cystitis
Nonspecific immunity includes what type of things?
physical barriers, mucus production, inflammation, fever, phagocytosis
What is nonspecific immunity directed at?
against all pathogens
When does specific immunity take over?
when nonspecific mechanisms fail
Specific immunity is targeted for what?
a specific antigen
Specific immunity arises from what?
B and T lymphocytes
What happens with cell-mediated immunity?
T-lymphocytes directly attack the invading antigen
What is cell-mediated immunity important for?
protecting against intracellular bacterial or viral infections, fungal diseases, and protozoal diseases
What happens with antibody-mediated immunity?
B-lymphocytes produce antibodies that react to antigen
What is antibody-mediated immunity important for?
extracellular phases of systemic viral and bacterial infections and protection against endotoxin and exotoxin-induced disease
What does active immunity arise from?
when an animal receives an antigen that activates B- and T-lymphocytes
What does active immunity create?
memory
What does passive immunity arise from?
when an animal receives antibodies from another animal
When is natural immunity acquired?
during normal biological processes
When is artificial immunity acquired?
through medical procedures
What is an inactivated vaccine made from?
microbes, microbe parts, or microbe by-products that have been chemically treated or heated to kill the microbe
What does inactivated vaccines contain?
adjuvants
What are adjuvants?
substances that enhance the immune response by increasing the stability of the vaccine in the body
Live vaccines are made from what?
live microorganisms that may be fully virulent
Modified live vaccines are made from what?
microorganisms that have lost their virulence
What is a recombinant vaccine?
when a gene or part of a microorganisms is removed from one organism and inserted into another microorganisms
What is a toxoid vaccine?
a vaccine used against a toxin that has been deactivated by heat or chemicals, but is still able to stimulate antibody production
What are antitoxins?
substances that contain antibodies obtained from an animal that has been hypersensitized to neutralize toxins
What are maternally derived antibodies?
antibodies that offspring receive passively from their mothers
What is intracellular fluid?
fluid within the cells
What is extracellular fluid?
fluid within the blood vessels and in the tissue spaces between the blood vessels and cells
What are cations?
positively charged ions
What are anions?
negatively charged ions
How does body water move in order to establish equilibrium?
along its concentration gradient
Where does fluid exchange occur?
only across capillary walls
What are crystalloids?
diffusible substances that dissolve in solution
What are colloids?
nondiffusible substances
What are disadvantages of intraperitoneal fluids?
possibility of sepsis, can’t use IP routes in animals waiting for abdominal surgery, can’t use hypertonic solutions
What is an isotonic solution?
one that has the same osmotic pressure as blood and extracellular water
What is a hypotonic solution?
one that has osmolality lower than that of blood, RBCs can swell
What is a hypertonic solution?
one that has osmolality higher than that of blood, RBCs can strink
Examples of isotonic solutions.
0.9% sodium chloride, LRS, Normosol, Plasmalyte
Examples of hypotonic solutions.
5% dexrose in water (D5W), 1/4 NS (0.25% normal saline), 1/2 NS (0.45&=% normal saline)
Examples of hypertonic solutions.
0.9% normal saline with 5% dextrose, 10% dextrose in water, 3% normal saline
What should the label on a prescrition have?
name and address of the dispenser, clients name, animals name and species, drug name , drug strength, drug quantity, date of order, directions for use, any refill information
What is fluid overload?
a condition in which the administration of fluid occurs at a greater rate than the rate at which the body can use or eliminate the fluid
What are signs of fluid overload?
respiratory changes, fluid deposition in the subcutaneous space, weight gain
What are colloid solutions?
fluids with large molecules that enhance the oncotic force of blood, causing fluid to move from the interstitial and intracellular spaces into the vascular space
Examples of natural colloids
plasma, albumin, whole blood
Examples of synthetic colloids.
dextrans, hydroxyethyl starch (hetastarch)
What are types of fluid additives?
50% dextrose, potassium, sodium bicarbonate, calcium, vitamins
Fenbendazole is used for treatment of what?
parasites
Atropine is used to treat toxicities of which drug that may cause SLUDGE?
organophosphates
Which of the following delivery methods treats the environment rather than the animal?
A) dips
B) foggers
C) injectables
D) tablets
foggers
What does the spectrum of an antibiotic indicate?
which kind of bacteria it is useful against
What other groups of antibiotics are cephalexins structurally similar to?
penicillins
Enrofloxacin is used to what?
treat a bacterial infection
Addison’s disease involves which gland?
adrenal
Which of the following is generally not a reason for administration of hormones?
A) maximize weight gain
B) control urinary incontenince
C) synchronize estrous cycle
D) treat otitis externa
treat otitis externa
Which hormone may be used to assist in the diagnosis of Cushing’s disease?
ACTH
What is the active ingredient in Strongid, which is often used for deworming?
pyrantel pamoate
Blood work is recommended during treatment with amphotericin B because it has a strong potential to damage what?
kidneys
T/F. Antiseptics are used to kill microorganisms on animals.
true
Dermatophytes are?
fungi
T/F. A veterinary feed directive is required when administering antibiotics to livestock via feed.
true
Which of the following is the best description of a pheromone?
A) a hormone used to treat blindness
B) a hormone with a positive feedback loop
C) a synthetic hormone that increases milk production in dairy cattle
D) volatile chemicals that affect behavior in other animals
volatile chemicals that affect behavior in other animals
Tresaderm is put directly into the ear canal to treat what?
bacteria
Selamectin is the active ingredient in which spot-on medication?
Revolution
Permethrin is not safe for which animals?
cats
Which medication is commonly used to treat giardia?
metronidazole
Clavamox is a brand of amoxicillin and clavulonic acid. It is significant because?
the combination increases the spectrum of activity
Which of the following is a topical antibiotic commonly found in OTC ointment?
A) cephalosporin
B) polymyxin
C) streptomycin
D) tilmycosin
polymyxin
Which species should not receive Chloramphenicol?
dairy cow
The radioactive isotope of which element is used to treat hyperthyroidism?
iodine
Which of the following is false.
A) insulin should be stored in the refrigerator
B) special syringes are used to administer insulin
C) too much insulin can cause dangerously low blood sugar
D) you must shake the bottle of insulin well, before administering it
you must shake the bottle of insulin well before administering it
The drug Albon used to treat coccidia contains what?
sulfadimethoxine
Some collies have mutations in a multi drug resistance gene, which makes them very sensitive to toxicity from which drug?
ivermectin
What drug is in Quest dewormer?
moxidectin
What disinfectant is used as a gas?
gluteraldehyde
What is antibiotic residue?
presence of an antibiotic or its netabolites in animal tissues or food products
Which of the following is not a type of antibiotic?
A) ceftiofur
B) ketoconazole
C) streptomycin
D) trimethoprim sulfa
ketoconazole
Prostaglanding F2 alpha is used to what?
synchronize estrous in cattle
Which of the followin is false regarding oxytocin?
A) it has a positive feedback loop
B) it is naturally produced by the ovaries
C) it should be efrigerated
D) it stimulates uterine contractions
it should be refrigerted
Mitotane is used for treatment of what?
Cushing’s disease
which drug can affect the cartilage in growing dogs?
ampicillin
Coccidiostats are most effective against what?
protozoa
Regular insulin has what duration of action in animals?
short
Which of the following is an antibiotic?
A) acyclovir
B) levamisole
C) piperazine
D) tylosin
tylosin
Which drug is used to treat tapeworms in cats?
Praziquantel
Milbemycin is the active ingredient in Sentinel, which is used for which disease?
Heartworm
Which of the following drugs may be used to treat Lyme disease?
A) amoxicillin
B) doxycycline
C) florfenicol
D) ivermectin
amoxicillin
Amprolium (Corid) is used to treat which poutry disease?
coccidia
Which of the following would likely NOT be used to treat flea infestations?
A) fipronil
B) griseofulvin
C) inidaclopride
D) lufenuron
griseofulvin
The amino acid, Lysine, has been documented in some studies to be beneficial in treating which infection?
ringworm
Otomax would be contraindicated in what patient?
patient with reuptured ear drum
A cat is diagnosed with glaucoma. Which of these drugs could make the condition worse?
A) acetazolamide
B) pilocarpine
C) tetracaine
D) tropicamide
tetracaine
A dog is diagnosed with having a corneal ulcer. Which of the following could make it worse?
A) beta blocker
B) diuretic
C) miotic
D) steroid
steroid
Which drug is used for treating KCS?
A) albendazole
B) cyclosporine
C) glucosamine
D) lufenuron
cyclosporine