Pharmacology Pt. 2 Flashcards
What percent of the body is made up of water?
60%
What percent of the body’s water is intracellular?
40%
What percent of the body’s water is extracellular?
20%
Of the body’s extracellular water, how much is intravascular?
1/4
Of the body’s extracellular water, how much is interstitial?
3/4
What physical exam findings would you assess for hydration/dehydration?
skin turgor, CRT, MM color
What is mild dehydration?
~5%, minimal loss of skin turgor, semidry mucous membranes, normal eyes
What is moderate dehydration?
~8%, moderate loss of skin turgor, dry mucous membranes, weak rapid pulses, sunken eyes
What is severe dehydration?
~10%, considerable loss of skin turgor, tachycardia, extremely dry mucous membranes, weak/thready pulses, low blood pressure, at 12%, sunken eyes and altered level of consciousness
How is hydration deficit calculated?
% dehydration (as a decimal) x wt in kg = ___ L (volume in liters)
How are maintenance fluids calculated?
kg x 40-60ml/kg/day = ml/day
ml/day + estimated ongoing losses (V/D) + hydration deficit = ml/day
ml/day divided by 24 hours = ml/hour
What 3 values need to be known to calculate a fluid rate?
hydration deficit, maintenance needs, ongoing losses
Shock blouses are given at ___________ in dogs.
80-90ml/kg
Shock boluses are given at ___________ in cats.
50-55ml/kg
How are boluses calcuated?
kg x ml/kg = ml total to give
How should boluses be given?
give 1/4 of total amount then reassess
If 50% of shock bolus is not causing significant improvement, what can be added to fluids to help?
a colloid
What fluids are appropriate for SQ fluids?
use isotonic crystalloids only
What are the signs of overhydration?
increased respiratory rate, increased lung sounds/crackles on lung auscultation, pitting edema, increased blood pressure, chemosis, body weight increase of more than 10 percent
What is the drip rate for a micro drip set?
60 drops/ml
What is the drip rate for a macro drip set?
15 drops/ml
Which fluids are crystalloids?
Normosol R, Plasmalyte, Physiologic saline, Lactated Ringers
What kind of crystalloids are Normosol R, Physiologic saline, and Lactated Ringers?
isotonic crystalloids
Which fluids are colloids?
hetastarch, dextran 70, oxyglobin, plasma, albumin, whole blood
What type of colloids are hetastarch, dextran 70, and oxyglobin?
synthetic colloids
What type of colloids are plasma, albumin, and whole blood?
natural
Once given, where do crystalloids go in the body?
they enter all body fluid compartments
When are isotonic crystalloids used?
shock, vomiting, diarrhea, pancreatitis
When are hypotonic crystalloids used?
can be used to treat hypernatremia or conditions where sodium retention is a problem, not suitable for hypovolemic shock
When are hypertonic crystalloids used?
useful in treating shock and intracranial edema
Most isotonic crystalloids leave the __________________ space within 30 minutes.
intravascular space
Hypotonic fluids hydrate the ________________ space.
extracellular space
Hypertonic fluids cause fluid to move out of the ______________________.
interstitial space/intracellular space into the intravascular space
Which isotonic crystalloid shouldn’t be used in liver disease?
Lactated Ringers
Colloids contain _____________________________.
large molecules that work to hold fluid in the vasculature
How is volume of blood transfusion calculated?
Volume to transfuse= 90ml/kg (dog) or 60ml/kg (cat) X weight in kg X (desired PCV minus patient PCV divided by PCV of donor blood)
What is the maximum time a blood transfusion should be completed in?
4 hours
When are colloids used?
to treat anemia
What should blood transfusion be started at?
rate started slowly, 1ml/kg for 10-15 minutes
What is a blood transfusion increased to after a slow start?
2ml/kg/hr
Sodium bicarbonate is added to fluids to correct ____________.
metabolic acidosis
Why do we add potassium to fluids?
supplement for potassium deficits or prevent potassium deficits
Why should calcium be given slowly IV?
can cause cardiac arrythmias, arrest and hypotension
What drug group is Proparacaine HCl in?
ocular anesthetics
What drug group is Latanoprost in?
Prostaglandin
What drug group is Pilocarpine HCl in?
Parasympathomimetics/Miotics
What drug group is Cyclosporine in?
drugs for KCS
What drug group is Dorzolamide HCl in?
Carbonic Anhydrase Inhibitors
What drug group is Atropine in?
Mydriatic Vasoconstrictors
What drug group is Prednisolone in?
Steroidal Anti-inflammatory Agents
What drug group is Amphotericin B in?
ocular antifungals
What drug group is Tobramycin in?
Antimicrobial Ophthalmic Therapy
What drug group is Trifluridine in?
ocular antivirals
What drugs group is EDTA in?
Antibiotic Potentiating Agents
Fluorescein stain in used to diagnose ___________.
ulcers
What is a Schirmer Teat Test used to diagnosed?
dry eye
What drug group and drugs are used to treat anterior uveitis?
Steroidal Anti-inflammatory Agents
What drugs are used to decrease intraocular pressure?
Epinephrine, Timolol, Parasympathomimetics/Miotics, Latanoprost
What is Latanoprost used to treat?
glaucoma
What drugs are used to treat feline herpesvirus?
ocular antivirals
What do Ceruminolytic Agents do?
emulsify cerumen and purulent exudate
Why are topical ear mite medications preferred?
mites can live outside ears and can reinfest
Why is Atropine used in the eyes?
dilates the pupils, used for pain control caused by corneal disease
What is Timolol used for?
treatment of glaucoma
What drugs cannot be used when corneal ulcers are present?
Steroidal Anti-inflammatory Agents and Flurbiprofen
What drugs are ocular NSAIDs?
Diclofenac sodium, Flurbiprofen sodium, Ketorolac tromethamine
What is Tacrolimus used to treat?
KCS
What ocular drugs can lead to colic in horses with repeated use?
Atropine
What are the locally active emtics?
3% Hydrogen Peroxide
What drug group is Maropitant citrate in?
Antiemetic
What is the trade name for Maropitant citrate?
Cerenia
What drugs are H2 receptor antagonists/blockers?
cimetidine, ranitidine, famotidine
What drugs are laxatives?
lactulose, magnesium hydroxide, psyllium, metamucil, bran, vetasyl fiber tablets, mineral oil, petrolatum, Docusate sodium
What drug group is Metoclopramide in?
Dopaminergic Antagonists
What drug group is Cisapride in?
Serotonergic Drugs
What drug group are Fortiflora and Proviable in?
Probiotics
What drugs are Gastromucosal protectants?
Sucralfate
What drug is an antibiotic for the GI tract?
Metronidazole
What drug is a common appetite stimulant?
Mirtazapine, Cyproheptadine
What drugs are used to treat exocrine pancreatic insufficiency?
Pancrelipase - Pancreazymes
Metoclopramide is contraindicated with what condition?
GI obstruction
Emetics should be given within how many hours of toxin ingestion?
within 2-4 hours
What is the emetic of choice in dogs?
Apomorphine
What is the emetic of choice in cats?
Xylazine
What drug commonly causes burning at the site of injection?
Maropitant citrate
What drugs binds with phosphorus and can be used in kidney failure treatment?
Antacids