Pharmacology Flashcards
Pharmacokinetics
Factors involved in getting the drug to its target
Absorption, distribution, biotransformation, excretion
Pharmacodynamics
What the drug does at the target
Simple diffusion
More lipid soluble, faster rate
Absoprtion
Enters blood without modification, amount of active drug in circulation
Distribution
Limited by rate of blood flow
Volume= amount administered/concentration of drug in plasma
Storage= adipose (primary), bone, mm, organs
Typical distribution start out high in blood > viscera > muscle > fat
Biotransformation
Chemical change following administration
Aids excretion by creating a more polar, water soluble compound
Occurs in liver (primary), lung, kidney, GI, skin
Oxidation, reduction, hydrolysis, conjugation
Excretion
Kidneys (primary), lungs, saliva, tears, sweat, GI
Clearance= ability to eliminate drugs
Determined by blood flow and excretion ratio
Calcium channel blocker side effects
Dizziness, hypotension
Vinchristine (cancer drug?) side effects
Foot drop
Beta blockers side effects
Vital signs are NOT accurate
Use RPE
Antihistamine (H1 vs H2 Blocker)
H1= respiratory H2= GI