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40 Cards in this Set

  • Front
  • Back
MOA of pFOXis
shift heart metabolism for energy from FAs to glu
ranolazine and trimetazidine are
pFOXis
reduce O2 requirement:
nitrates, Ca Ch blockers, B blockers
increase O2 delivery by reducing vasospasm
nitrates and CCBs
tx for unstable angina
angioplasty and anti-clotting meds
abciximab, eptifibatide and tirofiban are:
platelet glycoprotein IIb/IIIa inhibitors used for unstable angina
amyl nitrate, nitroglycerin, isosorbide dinitrate
nitrates
MOA of nitrates
dinitration in smooth muscle cells causes release of NO; stimulates guanylyl cyclase to increase cGMP - smooth muscle relaxation
effect of nitrates on CV system
venodilation, reduced CO and preload; relaxed arteries causes increased coronary flow, reduced afterload; reversal of spasm
compensatory effect of nitrates
reflex tachycardia and increased contraction force
nitrate effect on other organs (not CV)
relax smooth muscle, reduce platelet aggregation (IV form)
tolerance of nitrates develop after how long?
8-10 hr
combo of nitrates with what drug can cause increased hypotension and hypoperfusion of organs?
sildenafil and other ED drugs
MOA of ED drugs (sildenafil):
inhibit phosphodiesterase that metabolizes cGMP, increases amount of cGMP available which increases relaxation of erectile smooth muscle, this allows inflow of blood and erection
at high blood concentrations, what is an important nitrate toxicity
methemoglobinemia (can be used to tx cyanide poisoning)
diltiazem, nifedipine and verapamil are:
CCBs
MOA of CCBs
block voltage gates L-type Ca channels (most impt in heart and smooth muscle); decreases contractility
these can be used to treat AV node arrythmias
diltiazem and verapamil; block Ca-dep conduction in AV node
CCBs are effective against which types of angina?
effort and vasospastic
for atherosclerotic angina what drug combo do you use?
CCBs and nitrates
nimodipine is a CCB that is also approved to tx ___
hemorrhagic stroke
SE of CCBs
constipation, pretibial edema, nausea, flushing, dizziness, heart failure, AV block, SA depression
prophylactic tx of atherosclerotic and exercise-induced angina is by ___
B blockers
SE of beta blockers
increased heart size, longer ejection period
compensatory response of nitroglycerin
increased cardiac force
this drug is most likely to cause methemoglobinemia
amyl nitrate
drugs that cause ____ generally precipitate angina
HTN or tachycardia
SE of nitrates
Postural hypotension, reflex tachycardia, hot flashes, and throbbing headache due to meningeal artery dilation
Beta blockers are used for which type of anginal attack
Classic
Toxicity caused by nitroprusside and treatment
Cyanide toxicity treated with sodium thiosulfate
SE of beta blockers
Bradycardia, SEXUAL DYSFUNCTION, decrease in HDL, and increase in Triglycerols (TG)
CCBs block what type of Ca channels?
L-type
CCB contraindicated in CHF
Verapamil
CCB with predominate effect on arteriole dilation
Nifedipine
SE of CCB
Constipation, edema, and headache
Drugs used in the management of angina
Aspirin, Nitrates, CCB, and Beta blockers
Aspirin reduces mortality in unstable angina by
Platelet aggregation inhibition
Nitrate used for acute anginal attacks
Nitroglycerin sublingual tablets
Nitrate used to prevent further attacks
Oral and transdermal forms of nitroglycerin
Nitrate free intervals are needed due to
Tolerance