Intro to Pharmacology Flashcards
What is a pro-drug?
Converted to active drug in body
What are pharmacotherapeutics?
Study appropriate use of meds
What is pharmacoeconomics?
Study methods to evaluate value between therapies
What is pharmacoepidemiology?
Study use and effects of meds in large populations
What are the key aspects of each drug class?
Drug name and class (MOA vs chemical) MOA Indications/Uses Toxicities via side effects and contraindications Monitoring Drug Interactions
Suffix of beta blockers
-lol
Suffix of alpha blockers
-sin
Suffix of ACE inhibitors
-pril
Suffix of H2 antagonists (blockers)
-ine
Suffix of proton pump inhibitors
-zole
Suffix of calcium channel antagonists (blockers)
-ipine
Suffix of diuretics
-ide
How can all substances be poisons?
DOSAGE/amount ingested
What factors contribute to concentration of drug at action sites?
BMI (physiological) pathologies genetics interaction with other drugs tolerance and desensitization
What leads to drug therapy failure primarily?
med errors and patient compliance
What is MEC and its relation to TI?
Minimum effective concentration TI is therapeutic index between MEC for desired response and adverse response –>high TI, hard to overdose (benzos) –> low TI, hard to get right dose and easy to have adverse response
What drugs have low TIs?
Digoxin Lithium Warfarin
What is the usual lag period for drugs?
20 minutes
Why are liquid drugs used over solid drugs in hospital/emergent settings?
Liquids have higher surface area, so absorb faster and bypass lag period
Describe additive drugs
Both drugs together give expected effect
2+3=5
Alcohol and Diphenhydramine
Describe synergistic drugs
Multiple interactions have more than expected effect
3+3=9
Alcohol and alpraxolam
Why is alcohol and alprazolam deadly?
Alprazolam is a benzo with high TI so can’t overdose easily
However once alcohol is ingested, increases rxn that kills
Describe potentiation of drugs
Something that isn’t toxic by itself becomes toxic with another drug
2+0=4
alcohol and CCl4 becomes a free radical
What are the types of antagonistic mechanisms?
Functional: different receptors produce opposite effects (adrenergic + vasodilator)
Chemical: counters effect of another to decrease overall (EDTA with lead or arsenic poisoning)
Dispositional: metabolism altered to decrease concentration or duration (give ethanol with methanol poisonin= Competitive Antagonist)
Receptor: change configuration or specificity (narcan high specificity)
Give example of drug with deleterious pharmacological effects
anti-cancer agents, adriamycin
Give example of pathological deleterious effects
INH to treat TB can lead to kidney damage if not monitored