Random Pharm Flashcards
Which type of antihypertensive must be used cautiously in decompensated CHF patients + is contraindicated in cardiogenic shock?
beta-blockers
First-line antihypertensive in T2DM pts
ACEi/ARBs (protective against diabetic nephropathy)
vasoselective Ca2+ channel blockers
amlodipine, nifedipine
dihydropyridine
cardioselective Ca2+ channel blockers
verapamil > diltiazem
(“Verapamil = Ventricle”)
non-dihydopyridine
how do Ca2+ channel blockers lower blood pressure
block L-type Ca2+ channels of cardiac and smooth muscle –> decreased muscle contractility
(decreased risk of vasospasm, hence used in prinzmetal angina and raynaud’s)
which drug can be used to prevent cerebral vasospasm following subarachnoid hemorrhage?
nimodipine (dihydropyridine Ca2+ channel blocker)
Finding Nimo in the see of blood that is a subarachnoid hemorrhage
antihypertensives used in pregnancy
hydralazine (can cause lupus-like syndrome) + methyldopa (can cause hemolytic anemia)
how does hydralazine work?
inceases cGMP –> smooth muscle relax’n (arterioles > veins; afterload reducer)
what drug is commonly given with hydralazine? why?
beta-blocker, to prevent reflex tachycardia
which drug given in hypertensive emergencies is the only IV agent that increases renal perfusion and decreases BP (ie, is good for pts with renal failure)?
fenoldopam (D1 receptor agonist)
feared side effect of nitroprusside (given in hypertensive emergency)
cyanide toxicity (treat with sodium thiosulfate)
goal of antianginal therapy
reduce myocardial O2 consumption
main effect of nitrates in treating angina (nitroglycerin, isosorbide, dinitrate)
reduce preload
main effect of beta-blockers in treating angina
reduce afterload
partial beta-agonists contraindicated in angina
pindolol and acebutolol
mechanism of statins
HMG-CoA reductase inhibitors
main effect of statins
reduce LDL
statin side effects
hepatotoxicity and rhabdo (esp when used with fibrates and niacin/B3)
main effect of niacin/B3
decrease LDL and increase HDL
mechanism of niacin/B3
reduce VLDL synthesis and release by hepatocyte; inhibit lypolysis in adipocytes
side effects of niacin/B3
flushing, hyperglycemia, hyperuricemia
cholestyramine, colestipol, colesevelam
bile acid resins
mechanism and effect of bile acid resins (“chol”, “col”)
prevent intestinal reabsorption of BILE ACIDS –> lower LDL
side effects of bile acid resins
cholesterol gallstones, GI upset, decreased abs of fat soluble vits
mechanism and effect of ezetimibe
prevent absorption of CHOLESTEROL from small intestinal brush border –> lower LDL
effect of fibrates
decrease TGs