Test 1 Flashcards
What is the concentration for NS?
0.9%
What do most drugs comes from?
Laboratory synthesis
What does MAB stand for?
Monoclonal antibodies
What does Premarin come from?
Urine of pregnant mares
What is another name for opioids?
Narcotics
What plant does opioids come from?
Poppy’s
What plant does digoxin comes from?
Foxglove
What does UFH stand for? Where does it come from?
Unfractionated fractionated heparin
Pig intestine
Where does MAB come from?
Laboratory synthesis
What is pharmacodynamics?
Study of what drugs do to the body
What can prolonged exposure of antagonist do to receptors? How does that effect the tolerance?
Up regulates receptors
Decreases tolerance
What can prolonged exposure of an agonist do to receptors? How does that effect the tolerance?
Down regulated receptors
Increases tolerance
What does potency measure?
How much action a drug caused
What does affinity measure?
How well a drug binds to a receptor
Do agonists and antagonist bind or stay bound to receptors?
They stay bound to receptors until an enzyme cleaves then off
What does LD50 stand for?
Lethal dose to kill 50% of the population
What does ED50 mean?
Effective dose to help 50% of the population
How is therapeutic index measured?
LD50/ED50=therapeutic index
What is a teratogen?
Something that causes a birth defect
What is a carcinoma?
Something that causes cancer
What is the most common drug allergy?
Penicillin
What does OTC stand for?
Over the counter
What is the most abused drug classified in the drug schedule? Least abused drug schedule?
Schedule 1
Schedule 5
What does PO mean? What type of route is it?
Oral
Enteral route
What does SL mean? What route is it?
Sublingual
Enteral route
Where is a buccal taken and what route is it?
Taken in the mucous membranes
Enteral route
What are the two different route that rectal medications can be taken?
Enteral or topical route
What does IM mean? What route is it considered?
Intramuscular
Parenteral route
What does SC mean? What route is it considered?
Subcutaneous
Parenteral route
What does ID mean? What route is it considered?
Intradermal
Parenteral route
What does IA mean? What route is it considered?
Intraaterial
Parenteral route
What does IT mean? Where is it inserted? What route is it considered?
Intrathecal-spinal cord
Parenteral route
Where is intraarticular injected?
In joints
What does parenteral route?
Medication is injected
What type of route is Nasal spray (NS)?
Topical route
What type of route is a meter dose inhaler (MDI)?
Topical route
What does anhydrous mean?
Containing alcohol
What does tincture/elixir/spirits mean?
Containing alcohol
What is the length of the pre ganglionic neuron for the sympathetic system? Parasympathetic system?
Sympathetic: short
Parasympathetic: long
What is the length of the post ganglionic neuron of the sympathetic system? Parasympathetic system?
Sympathetic: long
Parasympathetic: short
What receptors are on the post ganglion of sympathetic and parasympathetic system?
N2 receptors
What receptors are on sympathetic effort organs?
Adrenergic (Alpha or beta) receptors
What receptors are found on parasympathetic effectors organs?
Muscarinic receptors
What type of Neuron is a post ganglion neuron? What does it release?
Adrenergic neuron
Norepinephrine
What type of receptors are on skeletal muscles of cholinergic neurons?
N1 receptors
What system innervates generalized and localized sweating? What types of neurons are pre and post ganglion for localized sweating and generalized sweating?
Sympathetic system
Generalized sweating: cholinergic and cholinergic ganglion
Localized sweating: cholinergic and adrenergic ganglion
What neurotransmitters are released from adrenergic or cholinergic receptors?
Adrenergic: NE
Cholinergic: ACh
What receptors are on generalized sweat glands?
Muscarinic receptors
What system are blood vessel only innervated by?
Sympathetic system
What receptors are found on localized sweat glands?
Alpha-1 receptors
What organs and systems are only innervated by the sympathetic system?
Blood vessels
Generalized sweat glands
Localized sweat glands
What type of effect happens with odd numbered receptors? What effect happens with even numbered receptors?
Odd # receptors: excitatory
Even # receptors: inhibitory
True of false: nicotinic receptors cause only excitatory responses?
True
True of false cholinergic receptors only give excitatory responses?
False
What receptors are on ciliary processes to produce aqueous humor?
Beta 1
What receptors are on ciliary muscles that cause suspenseful ligaments to relax?
Beta 2 receptors
What happens to ligaments and lens when ciliary muscle contracts? Relaxes?
Contracts: slack on ligaments and lens becomes round (near sight)
Relaxes: tension on ligaments and lens flattens (fat sight)
What muscle causes a pupil to dilate and what muscle cause a pupil to constrict?
Pupil Dilate: dilator pupillae
Pupil Constrict: sphincter pupillae
What is another name for pupil dilation? Pupil constriction?
Pupil dilate: mydriasis
Pupil constrict: miosis
What receptors are found on dilator pupillae? Sphincter pupillae?
Dilator pupillae: alpha 1 receptors
Sphincter pupillae: muscarinic receptors
What is Brimonidine(Alphagan P)? What is it’s MOA? What is it used for?
Alpha 2 agonist
Alpha 2 receptor blocks release of NE
Used to Tx glaucoma by decreasing aqueous humor production
What class of drug is an alpha 1 agonist called?
Alpha adrenergics
What is the prototype for alpha 1 adrenergics?
NE
What are the effects on BP, GI system and pupils with alpha adrenergics?
BP: increases due to vasoconstriction
GI: constipation due to decrease gut motility
Pupil: mydriasis
What is dobutamine(Dobutrex)? What receptors does it interact with most? What does it cause and what is it indicated for?
sympathomimetic
Interacts mostly with B1 receptors
Increases CO and vasodilator
Indication: cardiogenic shock and HF(heart failure)
What is dopamine(intropin)? What receptors does it react with at a low dose? What does it do and what is it’s indicator?
sympathomimetic
Dopaminergic receptors
Vasodilator
Indication: septic or cardiogenic shock
What is dopamine(intropin)? What receptors does it react with at a moderate dose? What does it do and what is it’s indicator?
Sympathomimetic
Beta1 receptors
Increases CO (inotropic)
Indicators: septic and cardiogenic shock
What is dopamine(intropin)? What receptors does it react with at a high dose? What does it do and what is it’s indicator?
Sympathomimetic
Alpha1 receptor
Vasoconstrictor
Indication: septic or cardiogenic shock
What is epinephrine(Adrenalin)? What receptor does it work with at a low dose? What does it do? What is it used for?
Sympathomimetic
Beta1 receptors
Increases HR, inotropic, bronchodilation
Anaphylactic shock, cardiac arrest, acute asthma
What is epinephrine(Adrenalin)? What receptor does it work with at a high dose? What does it do? What is it used for?
Sympathomimetic
Alpha 1 receptor
Increase HR, inotropic, bronchodilator
Indication: Acute asthma, cardiac arrest, anaphylactic shock
What is norepinephrine(Levophed) indicated for?
Hypotension/circulatory shock
What is a risk of using norepinephrine(Levophed)? How can it be corrected?
Risk of extravasation that can lead to NE causing necrosis and gangrene to tissue?
Corrected by giving NS flush and phentolamine(alpha 1 blocker)
What is extravasation? How is it avoided?
When a needle goes thru both side of vein while giving a shot
Usually avoid by giving it thru central line
what is an alpha adrenergic medication?
Alpha1 agonist?
What type of medication is tetrahydrozoline(Visine)? How is it given? What does it do?
Alpha adrenergics
Given as eye drops
Vasoconstriction vessels to decrease mucus production
What type of medication is phenylephrine(Neo-synephrine)? How is it given? What does it do?
Alpha adrenergic
Nasal spray
Vasoconstricts vessels to decrease mucus production
What are side effects of alpha adrenergics?
Excessive dryness (mydriasis)
Rebound congestion (rhinitis medicamentosa)
What is rhinitis medicamentosa?
Rebound congestion
Why is a alpha adrenergic bad to give to pt with heart disease/HTN, DM, or BPH?
Heart disease/HTN- b/c vasoconstrictor raises BP
DM- increases sympathetic system, increases BGL
BPH- vasoconstrictor makes it more difficult to pee
What does BPH stand for?
Benign prostate hyperplasia
What type of drug is phenylephrine HCl (AK-Dilate)? What does it do?
Alpha 1 agonist
Mydriasis and vasoconstriction
What is the drug of choice for anaphylaxis? What receptors does it stimulate?
Epinephrine (EpiPen)
Alpha and bets receptors
What type of drug class is epinephrine(EpiPen)?
Beta-adrenergics (non-selective)
What effect does epinephrine have on the heart, lungs and vessels?
Heart: increase HR and inotropic
Lungs: bronchodilator
Vessels: vasoconstriction
What type of drug is albuterol(Proventil)? How is it delivered?
Beta-2 (selective)
MDI
What type of drug is terbutaline(Brethine)? What is it used for? What route is is it given?
Beta-2 (selective)
Decrease uterine contractions
SC, IM, PO
What is the r/f of terbutaline(Brethine) for the fetus?
Can have effect on beta-1 receptors and lead to tachycardia
What type of drug is mirabegron(Murbetriq)? What is it’s indication? What does it do?
Beta-3 selective drug
Indication: overactive bladder
Relaxes Detrusor muscle to be able to pee
What is the detrusor muscle?
Muscle that helps generate force to pee
What is droxidopa(Northera)? What is it used for? What does it do?
Precursor NE
Indication: neurogenic orthostatic hypotension
Coverts into NE and vasoconstricts vessels
What is doxazosin(Cardura)? What does it do?
Alpha-blocker
Relaxes smooth muscles
What is tamsulosin(Flomax)? What does it do?
Alpha blocker
Relaxes smooth muscles
What are indications for alpha-blockers?
BPH/HTN
Ryanair’s disease
Pheochromocytoma
What is pheochromocytoma?
Tumor in adrenal medulla that is releasing increases NE and Epi
What does ADR mean?
Adverse drug Rx
What is the ADR for alpha blockers? Eyes, nose and circulation
Miosis, nasal congestion, orthostatic hypotension
Why are beta blockers given for these conditions? HTN CHF arrhythmia Angina Post MI Glaucoma
HTN-lower HR
CHF- lower HR
Arrhythmia-usually cause tachycardia does lower HR
Angina-decrease workload on heart by lowering HR
Post MI-decrease workload on heart by lowering HR
Glaucoma-decrease ciliary processes making aqueous humor
How are migraines usually caused? Why does a beta blocker help?
Migraines happen with vasodilation
A beta 2 blocker can cause vasoconstriction
What is timolol(Timoptic)? What is it used for?
Non-selective beta blocker
Decreases secretion for glaucoma
What is metoprolol(Lopressor)?
Beta 1 selective blocker
What is atenolol(Tenormin)?
Beta 1 selective blocker
What is propanolol(Inderal)? Why shouldn’t it be used on asthmatic pt?
Non selective beta blocker
Beta blocker can constrict bronchioles
What would be the DOC for anaphylaxis?
Epinephrine
What would be the class DOC for BPH?
Alpha blocker (tamulosin or doxizosin)
What is alpha 2 receptors found? What is their function?
Post ganglionic neurons
Regulate NE
What do cholinergic drugs do?
Drugs that increase parasympathetic system
What effect does a muscarinic(direct) drug do?
Muscarinic agonist
What does a anticholinesterase(indirect) do? What is another name for these drugs?
Blocks AChase enzyme to increase ACh in synapse
Also called acetylcholinesterase inhibitor
What is an anticholinergic drug? What is the prototype?
Muscarinic antagonist
Atropine
What are the ADR for cholinergics? What is the acronym?
SLUDGE
SALIVATION LACRIMATION URINATION DEFECATION GI cramps EMESIS
What is absorption in pharmacokinetics?
Movement of drugs from GI tract…to portal circulation….to liver….to systemic circulation
How does lipid solubility effect absorption?
Hydrophobic drugs get absorbed faster
How does ionization effect absorption?
Unionized drugs (drugs without a charge) are absorbed faster
How does drug formulation effect absorption?
The small the drug or more surface area of the drug the fast it absorbes
What is distribution in pharmacokinetics?
Drug moving to various organs and tissues of the body
How does plasma protein binding effect distribution of drugs?
Drug can bind to protein (albumin) and get delivered faster thru the body
How does blood flow effect distribution of drugs?
Blood mainly moves to three specific organs
- liver
- kidneys
- brain
How does the BBB effect distribution of drugs?
Only drugs that are hydrophobic can cross the BBB
Why do schedule 1 drugs usually stay in the brain?
Because they are extremely hydrophobic
What makes the BBB?
Foot processes of astrocytes
What is an influx transporter?
Transporter that allows a drug into the cell
What is an effluent transporter?
A drug that removes a drug out of the cell
What often makes a compound hydrophobic?
Hydrocarbons
What organ is most important for metabolism?
Liver
What is metabolism in pharmacokinetics?
Break down of drugs
What is the most important organ for excretion?
Kidney
What does enzyme induction mean?
Increase in enzyme activity or numbers
What does enzyme inhibition mean?
Decrease in enzyme activity or numbers
What things are more excretable? What things are more absorbable? Hydrophobic drugs or hydrophilic drugs?
Excreted often: hydrophilic
Absorbed often: hydrophobic
What is P450? Where is it found and in what organ?
Enzyme that breaks down drugs
Found inside SER of hepatocytes
What is the formula for bioavailability?
F= Fg* Fh
Fg=percent absorbed into blood from gut
Fh=percent of drugs that escapes liver and goes into circulation
How are drugs removed from saliva or breast milk?
Drugs can leave through lactation and lacrimation
Where does metabolism of drugs most often happen?
Liver
What are the FDA pregnancy categories? Which categories are safe for pregnant women?
A category to show which drugs are safe to take while pregnant
Drugs closer to A are safe to take during pregnancy
X category drugs you should not take during pregnancy
What increases tolerance of a drug? (Hint: enzymes and receptors)
Enzyme induction-increasing enzymes to decrease how long drug stays
Down regulation-decreasing receptors for the drug
How is dependence of a drug increased?
Psychological (addiction)
Physical (withdrawal)
What are the 6 rights?
Right patient Right dose Right drug Right route Right time Right documentation
Patients Do Drugs Round The Day
What is pharmacotherapeutics?
The principles of drug actions
What is palliative therapy? When is it usually used?
Therapy that provides relief from pain and stress
Usually used during end stage of illnesses
What is prophylactic therapy? When is it usually used?
Therapy that provides preventative care
Usually used when a pt is about to go into surgery to prevent post infections
What is empiric therapy?
Therapy used for non-definitive conditions. Like using broad spectrum antibiotics
What is an Nn receptor?
N2 receptor
What is an Nm receptor?
An N1 receptor
What is bladder atony?
Bladder isnt contracting to help you pee due to detrusor muscle not contracting
What is postoperative ileus?
Little to no peristalsis after surgery due to general anesthesia
What is urinary retention?
Can’t pee
What are the two types of cholinergic drugs? (Direct and indirect)
Direct= muscarinic agonists
Indirect=anticholinesterase (acetylcholinesterase inhibitors)
What are anticholinergics?
Muscarinic antagonists/blockers
What do ganglionic stimulants or blockers effect?
N2 receptors
What do neuromuscular blockers or muscle relaxants effect?
N1 receptors
What is the acronym to know what cholinergics causes or effects?
SLUDGE
Salivation, Lacrimation, Urination, Defecation, GI cramps, Emesis
DUMBELS
Defecation, urination, Miosis, bronchospasm, emesis, lacrimation, salivation
What helps drain aqueous humor fluid better, pupil dilation or contraction?
Pupil contraction/miosis
What is pilocarpine(Pilocar)? What is it used for?
Muscarinic agonist
Used for glaucoma
-because it helps cause miosis to drain aqueous humor
Why is cholinergics used for urinary retention and postoperative ileus?
Because cholinergics increase peristalsis and increase flow of urine
What receptor is found on ciliary muscle s to cause them to contract?
Muscarinic receptors
If a lens is flat an object is close or far away?
Object is far away
What is edrophonium(Tensilon)? What is it indicated for? Why is it used? What route is it given?
Anticholinesterase (decreases amount of AChase)
Indicated for Myasthenia Gravis
Used to Dx MG
Route: IV
What is Pyridostigmine(Mestinon)? What is it indicated for? What does it do for the indication? What can an overdose cause!
Anticholinesterase
Indicated for Myasthenia Gravis
Tx for MG
Overdose can cause spastic paralysis
What neurotransmitter is in charge of Memory and learning in the brain?
ACh
What is Donepezil(Aricept)? What is it’s indication? What are common side effects?
Central acting Anticholinesterase drugs
Indication for Alzheimer’s disease
N/V and diarrhea
Why can Central acting anticholinesterase drugs cause
- nausea
- vomiting
- diarrhea
N/V occur when too much ACh is in the brain
Diarrhea is caused because anticholinesterase increase parasympathetic system
What is Malathion or Parathion? Why are they deadly?
They are poisons because they are irreversible AChase inhibitors
Why is bronchoconstriction a Sx of ADE of cholinergics?
Because cholinergics increase parasympathetic system
Why is muscle tremors a Sx of ADE of cholinergics?
Because cholinergics increase the amount of ACh in the NMJ
Why is bradycardia and hypotension a Sx of ADE of cholinergics?
Because of the parasympathetic decreasing HR and strength of contraction
Why are GI cramps a effect of cholinergic overdose?
Because of increased peristaltic movements
What is a belladonna plant(deadly nightshade)?
Anticholinergic drug that causes severe pupil dilation
What do anticholinergic drugs usually end in?
-ine
What are anticholinergics? What do they do?
Decrease parasympathetic
What is ipratropium(Atrovent)? What is its indication? MOA? How is it given?
Anticholinergic
Indication for COPD or asthma
MOA: bronchodilator and decreases saliva
Given thru MDI
What is oxybutinin(Ditropan)? What is it indicated for? MOA?
Anticholinergic
Indicated for overactive bladder and incontinence
MOA: decreases excretion
What is solifenacin(Vesicare)? What receptor does it react with? What is it indicated for? MOA?
Anticholinergic
M-3 antagonist
Indicated for overactive bladder and incontinence
MOA: decreases bladder tone and contractions
How does stimulation of receptor M3 effect the bladder?
Causes contractions and increases bladder tone
What is glycopyrrolate(Robinul)? What is it indicated for? MOA?
Anticholinergic
Indicated for IBS-D
Decreases peristalsis
How do anticholinergics decrease N/V?
Anticholinergics decrease levels of ACh
How can anticholinergics effect a cardiac arrest pt?
They can increase HR
What is Scopolamine(transderm scoop)? What is it indicated for?
Anticholinergic
Indicated for motion sickness
Why should you never use anticholinergics with a glaucoma pt?
Because the decrease in parasympathetic system can increase the sympathetic system…causing mydriasis and increasing IOP
What is the rhyme used to know if someone is overdosing on anticholinergics?
Can’t see
Can’t pee
Can’t spit
Can’t sh*t(defecate)