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89 Cards in this Set
- Front
- Back
class I antiarrhythmics
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- cardiac anesthetic, blocking phase 0 of AP
- class Ia: quinidine, procainamide (prolong repolarization) - class Ib: lidocaine, tocainide (shorten repolarization) - class Ic: propafenone (no effect on repolarization) |
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class II antiarrhythmics
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- beta-blockers
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class III antiarrhythmics
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- phase 3 prolonger
- bretylium, amiodarone |
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class IV antiarrhythmics
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- Ca++ channel blocker
- phase 2 blocker - Ca++ is coagulant factor IV - verapamil, diltiazem, nifedipine ("Very Different Names") |
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what are 4 drugs notable for causing heart block?
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ABCD: adenosine, beta-blocker, Ca++ channel blocker, digoxin
don't give 2 from this list at the same time |
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what are 4 drugs that poison cAMP phosphodiesterase?
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4 A's: amrinone, aminophylline, anti-inflammatories, aspirin
[leads to higher cAMP levels -> higher Ca++ levels -> contractility] |
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what are the ABC's & D of cardiac drugs?
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ACE inhibitor
Anesthetics Anticoagulant Beta blocker Ca++ Channel blocker Cholesterol/triglyceride lowering Clot busters Delayed repolarization Digoxin, other inotropes, Diuretics Direct vasodilator |
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what are the ABC's & D of hypertensive drugs?
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ACE inhibitor (esp when SCRAP beta blockers)
Beta blockers Ca++ channel blockers Direct vasodilators Diuretics |
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what cardiac drugs cause a lupus-like syndrome?
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procainamide, hydralazine, minoxidil
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what 2 cardiac drugs have reciprocal effects?
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digoxin and quinidine
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mannitol
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osmotic diuretic; increases urine osmolarity
C: shock, drug O/D, decrease intracranial & intraocular pressure X: pulmonary edema (drug moves right to the extracellular compartment and pulls out water) |
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acetazolamide
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carbonic anhydrase inhibitor; leads to self limited NaHCO3 diuresis and lower bicarb stores
C: glaucoma, metabolic alkalosis and altitude sickness X: hyperchloremic metabolic acidosis, neuropathy, NH3 toxicity, sulfa allergy |
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furosemide
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sulfonamide loop diuretic; blocks cotransport system Na+/K+/Cl- in thick ascending loop; abolish hypertonicity of medulla to prevent concentration of urine; increase Ca++ excretion
C: treat edema (CHF, cirrhosis, nephrotic syndrome, pulmonary edema), HTN, hypercalcemia X: OH DANG! Ototoxicity, Hypokalemia, Dehydration, Allergy (sulfa), Nephritis, Gout |
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ethacrynic acid
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phenoxyacetic acid derivative (NOT a sulfonamide); same action as furosemide (ie. blocks Na/K/2Cl cotransport system of thick ascending limb
C: diuresis for pts allergic to sulfa drugs X: similar to furosemide EXCEPT the sulfa allergy |
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hydrochlorothiazide
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thiazide diuretic; block NaCl absorption in early distal tubule ; reduces diluting capacity of nephron and decreases Ca++ excretion
C: HTN, CHF, idiopathic hypercalciuria, nephrogenic diabetes insipidus X: sulfa allergy, hypo K+, hypo Na+ and hyperGLUC (hyper -Glycemia, -Lipidemia, -Uricemia, -Calcemia) |
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spironolactone
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K+ sparing diuretic; competitive aldosterone receptor inhibitor antagonist in cortical collecting tubule
C: hyperaldosteronism, K+ depletion, CHF X: hyperkalemia, gynecomastia, antiandrogen effects |
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triamterene
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K+ sparing diuretic; block Na+ channels in the collecting tubule
C: hyperaldosteronism, K+ depletion, CHF X: hyperkalemia |
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amiloride
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K+ sparing diuretic; block Na+ channels in the collecting tubule
C: hyperaldosteronism, K+ depletion, CHF X: hyperkalemia |
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hydralazine
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+ cGMP -> smooth muscle relaxation vasodilates arterioles > veins to reduce afterload
C: severe HTN, CHF X: SLE-like syndrome, compensatory tachycardia, fluid retention |
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nifedipine
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calcium channel blocker; block L-type channels of cardiac and smooth muscle to reduce contractility
C: hypertension, angina [vascular smooth muscle: nifedipine > diltiazem > verapamil] |
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verapamil
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class IV antiarrhythmic act on AV nodal cells, - conduction velocity, + ERP, + PR interval; prevent nodal arrhythmias calcium channel blocker; block L-type channels of cardiac and smooth muscle to reduce contractility [heart: verapamil > diltiazem > nifedipine]
C: supraventricular arrhythmias X: hypotension, constipation |
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diltiazem
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class IV antiarrhythmic act on AV nodal cells, - conduction velocity, + ERP, + PR interval; prevent nodal arrhythmias calcium channel blocker; block L-type channels of cardiac and smooth muscle to reduce contractility [heart: verapamil > diltiazem > nifedipine]
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captopril
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ACE-inhibitor; lowers angiotensin II levels and prevents inactivation of bradykinin renin release is increased due to loss of feedback inhibition
C: HTN, CHF, diabetic renal disease X: "CAPTOPRIL" |
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enalapril
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ACE-inhibitor; lowers angiotensin II levels and prevents inactivation of bradykinin renin release is increased due to loss of feedback inhibition
C: HTN, CHF, diabetic renal disease X: "CAPTOPRIL" |
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lisinopril
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ACE-inhibitor; lowers angiotensin II levels and prevents inactivation of bradykinin renin release is increased due to loss of feedback inhibition
C: HTN, CHF, diabetic renal disease X: "CAPTOPRIL" |
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losartan
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angiotensin II receptor antagonist; NOT an ACE inhibitor and does NOT cause cough
C: HTN, CHF, diabetic renal disease X: hyperkalemia, DON'T give in pregnancy |
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nitroglycerin
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vasodilate by releasing NO in smooth muscle, causing + in cGMP and smooth muscle relaxation dilate veins >> arteries
C: angina, pulmonary edema; aphrodisiac and erection enhancer X: tachycardia, hypotension, "Monday disease" |
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isosorbide dinitrate
mxn? X? |
vasodilate by releasing NO in smooth muscle, causing + in cGMP and smooth muscle relaxation dilate veins >> arteries
C: angina, pulmonary edema; aphrodisiac and erection enhancer X: tachycardia, hypotension, headache; "Monday disease" in industrial exposure (tolerance during work week and tachycardia on weekends) |
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digoxin
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block Na+/K+ ATPase of cell membrane, causing + Na+ in cell and + Ca++ in cell (antiport no longer working well) -> + inotropy ; 75% bioavailability, 20-40% protein bound, t(1/2) 40 hrs, urinary excretion
C: CHF (+ contractility); atrial fibrillation (- conduction of AV node) [Youel: digoxin and quinidine are opposites] X: nausea, vomiting, diarrhea, blurry yellow vision, arrhythmia; made worse by renal failure, hypokalemia, quinidine (displace from tissue binding sites) |
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quinidine
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antiarrhythmic class IA; blocks Na+ channel blocks conduction (esp. depolarized cells), decrease slope of phase 4 depolarization and + threshold for firing in abnormal pacemaker cells; state-dependent (selectively depress tissue that is frequently depolarized)
C: atrial and ventricular arrhythmia [Youel: digoxin and quinidine are opposites] X: cinchonism (headache, tinnitus); thrombocytopenia, torsade de pointes |
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amiodarone
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[considered class IA and class III antiarrhythmic...more class III]
class IA antiarrhythmic; Na+ channel blocker; lengthens AP blocks conduction (esp. depolarized cells), decrease slop of phase 4 depolarization and + threshold for firing in abnormal pacemaker cells; state-dependent (selectively depress tissue that is frequently depolarized) C: atrial and ventricular arrhythmia |
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procainamide
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class IA antiarrhythmic; Na+ channel blocker; lengthens AP blocks conduction (esp. depolarized cells), decrease slope of phase 4 depolarization and + threshold for firing in abnormal pacemaker cells; state-dependent (selectively depress tissue that is frequently depolarized)
C: atrial and ventricular arrhythmia; premature ventricular contractions X: torsade de pointes, drug-induced SLE, pleuritis and pericarditis |
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disopyramide
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class IA antiarrhythmic; Na+ channel blocker; lengthens AP blocks conduction (esp. depolarized cells), decrease slope of phase 4 depolarization and + threshold for firing in abnormal pacemaker cells; state-dependent (selectively depress tissue that is frequently depolarized)
C: atrial and ventricular arrhythmia X: anticholinergic effects (dry mouth, urinary retention); torsade de pointes |
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lidocaine
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class IB antiarrhythmic; Na+ channel blocker lowers AP duration
DOC for acute ventricular arrhythmias (post MI!) and digitalis-induced arrhthmias X: CNS effects - drowsiness, numbness, slurred speech |
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mexiletine
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class IB antiarrhythmic; Na+ channel blocker lowers AP duration
DOC for acute ventricular arrhythmias (post MI!) and digitalis-induced arrhythmias X: blood dyscrasias, nystagmus, thrombocytopenia, leukopenia |
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tocainide
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class IB antiarrhythmic; Na+ channel blocker lowers AP duration
DOC for acute ventricular arrhythmias (post MI!) and digitalis-induced arrhythmias X: AV block, hypotension |
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flecainide
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class IC antiarrhthmic; Na+ channel blocker no effect on AP
C: good for V-tachs that progress to VF and intractable SVT; last resort in refractory tachyarrhythmias (Pharm Recall: treat life-threatening supraventricular and ventricular arrhythmias) X: pro-arrhythmogenic, so last-line agent |
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encainide
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class IC antiarrhythmic; Na+ channel blocker no effect on AP
C: good for V-tachs that progress to VF and intractable SVT; last resort in refractory tachyarrhythmias X: pro-arrhythmic, especially post-MI |
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propafenone
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class IC antiarrhythmic; Na+ channel blocker no effect on AP
C: good for V-tachs that progress to VF and intractable SVT; last resort in refractory tachyarrhythmias X: proarrhythmic effects |
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propranolol
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class II antiarrhythmics; beta blocker - cAMP, - Ca++ currents; suppress abnormal pacemakers by decreasing slope of phase 4; AV node especially sensitive
X: impotence, worsen asthma, CV effects, CNS effects, mask hypoglycemia |
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esmolol
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class II antiarrhythmics; beta blocker; short acting - cAMP, - Ca++ currents; suppress abnormal pacemakers by decreasing slope of phase 4; AV node especially sensitive
X: impotence, worsen asthma, CV effects, CNS effects, mask hypoglycemia |
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metoprolol
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class II antiarrhythmics; beta blocker - cAMP, - Ca++ currents; suppress abnormal pacemakers by decreasing slope of phase 4; AV node especially sensitive
X: impotence, worsen asthma, CV effects, CNS effects, mask hypoglycemia |
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atenolol
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class II antiarrhythmics; beta blocker - cAMP, - Ca++ currents; suppress abnormal pacemakers by decreasing slope of phase 4; AV node especially sensitive; decreased automaticity
X: impotence, worsen asthma, CV effects, CNS effects, mask hypoglycemia |
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timolol
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class II antiarrhythmics; beta blocker - cAMP, - Ca++ currents; suppress abnormal pacemakers by decreasing slope of phase 4; AV node especially sensitive
X: impotence, exacerbate asthma, CV effects, CNS effects (sedation, nightmares), mask hypoglycemia |
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sotalol
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class III antiarrhythmic; K+ channel blocker
C: Vtach; used when other antiarrhythmics fail; + AP duration, + ERP, + QT interval X: torsade de pointes; excessive beta block |
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ibutilide
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class III antiarrhythmic; K+ channel blocker
C: Vtach; used when other antiarrhythmics fail; + AP duration, + ERP, + QT interval X: torsade de pointes |
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bretylium
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class III antiarrhythmic; K+ channel blocker; blocks NE release
C: used for refractory v-fib and v-tach during times of cardiac arrest; + AP duration, + ERP, + QT interval |
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amiodarone
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class III antiarrhythmic; K+ channel blocker (drug structure is related to thyroid hormone)
C: treat refractory atrial flutter/fibrillation and v-tach; + AP duration, + ERP, + QT interval X: thyroid dysfunction, hepatocellular necrosis, interstitial pulmonary fibrosis |
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dofetilide
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class III antiarrhythmic; K+ channel blocker
C: Vtach; used when other antiarrhythmics fail; + AP duration, + ERP, + QT interval |
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adenosine
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other anti arrhythmic
DOC to diagnose/abolish AV nodal arrhythmias |
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K+
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other anti-arrhythmic depress ectopic pacemaker, esp in digoxin toxicity
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Mg+
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effective in torsades de pointes and digitoxin toxicity
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lovastatin
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HMG-CoA reductase inhibitor; lowers LDL a lot and raises HDL a little;
X: expensive, reversible + LFTs and myositis |
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pravastatin
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HMG-CoA reductase inhibitor; lowers LDL a lot and raises HDL a little; X: expensive, reversible + LFTs and myositis
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simvastatin
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HMG-CoA reductase inhibitor; lowers LDL a lot and raises HDL a little;
X: expensive, reversible + LFTs and myositis |
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atorvastatin
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HMG-CoA reductase inhibitor; lowers LDL a lot and raises HDL a little;
X: expensive, reversible + LFTs and myositis |
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niacin
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moderate decrease in LDL and moderate increase in HDL;
X: red, flushed face which goes down with aspirin and long term use |
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cholestyramine
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bile acid resin; moderate decrease in LDL; X: pts hate it, tastes bad, GI discomfort
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colestipol
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bile acid resin; moderate decrease in LDL; X: pts hate it, tastes bad, GI discomfort
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ezetimibe
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cholesterol absorption blocker; moderate decrease in LDL;
X: rare + LFTs |
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gemfibrozil
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fibrate; big drop in triglycerides; X: myositis, + LFTs
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clofibrate
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fibrate; big drop in triglycerides;
X: myositis, + LFTs |
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bezafibrate
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fibrate; big drop in triglycerides; X: myositis, + LFTs
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fenofibrate
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fibrate; big drop in triglycerides; X: myositis, + LFTs
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streptokinase
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thrombolytic; aid in conversion of plasminogen to plasmin, which cleaves thrombin and fibrin clots;
C: early MI, early ischemic stroke X: bleeding |
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urokinase
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thrombolytic; aid in conversion of plasminogen to plasmin, which cleaves thrombin and fibrin clots;
C: early MI, early ischemic stroke X: bleeding |
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tPA (alteplase)
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thrombolytic; aid in conversion of plasminogen to plasmin, which cleaves thrombin and fibrin clots;
C: early MI, early ischemic stroke X: bleeding |
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APSAC (anistreplase)
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thrombolytic; aid in conversion of plasminogen to plasmin, which cleaves thrombin and fibrin clots;
C: early MI, early ischemic stroke X: bleeding |
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heparin
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anti coagulant; catalyzes the activation of antithrombin III, decreases thrombin and Xa, short half life
C: immediate anticoagulant for PE, stroke, angina, MI, DVT; used in pregancy since it doesn't cross placenta; follow PTT X: bleeding, thrombocytopenia, drug-drug interactions |
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warfarin/coumadin
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anti coagulant; interferes with normal synthesis and gamma-carboxylation of vitamin K dependent clotting factors II, VII, IX, X, protein C & S; WEPT (Warfarin Extrinsic +PT); long half-life
C: chronic anticoagulation; contraindicated in pregnancy X: bleeding, teratogenic, drug-drug interactions |
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aspirin
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NSAID; acetylates and irreversibly inhibits both COX1 and COX2 to prevent conversion of arachidonic acid to prostaglandins; NO effect on PT or PTT
C: antipyretic, analgesic, anti-inflammatory, anti-platelet X: gastric ulceration, bleeding, hyperventilation, Reye's syndrome, tinnitus |
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clopidogrel
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anti platelet; irreversibly block ADP receptor and inhibit fibrinogen binding by preventing glycoprotein IIb/IIIa expression
C: acute coronary syndrome; coronary stenting; reduce incidence or recurrence of thrombotic stroke |
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ticlopidine
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anti platelet; irreversibly block ADP receptor and inhibit fibrinogen binding by preventing glycoprotein IIb/IIIa expression
C: acute coronary syndrome; coronary stenting; reduce incidence or recurrence of thrombotic stroke X: neutropenia |
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abciximab
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anti platelet; bind to the glycoprotein receptor IIb/IIIa on activated platelets
C: acute coronary syndromes, percutaneous transluminal coronary angioplasty X: bleeding, thrombocytopenia |
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X: hydrochlorothiazide
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hypokalemia, hyponatremia
hyperGLUC: hyper- Glycemia Lipidemia Uricemia Calcemia |
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X: loop diuretics
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potassium wasting, metabolic alkalosis, hypotension, ototoxicity
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X: clonidine
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dry mouth, sedation, severe rebound hypertension
[stimulates presynaptic alpha2 adrenergic receptor; leads to decreased NE release] |
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X: methyldopa
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sedation, positive Coombs' test
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X: hexamethonium
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sever orthostatic hypotension, blurred vision, constipation and sexual dysfunction
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X: reserpine
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sedation, depression, nasal stuffiness, diarrhea
(blocks NE release) |
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X: guanethidine
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orthostatic and exercise hypotension, sexual dysfunction, diarrhea
[blocks NE release] |
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X: beta blockers
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impotence, asthma, CV effects (bradycardia, CHF, AV block), CNS effects (sedation, sleep alterations)
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X: hydralazine*
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nausea, headache, lupus-like syndrome, reflex tachycardia, angina, salt retention
*take with beta blockers to avoid reflex tachycardia, diuretic to block salt retention |
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X: minoxidil
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hypertrichosis, pericardial effusion, reflex tachycardia, angina, salt retention
*take with beta blockers to avoid reflex tachycardia, diuretic to block salt retention |
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X: nifedipine, verapamil
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dizziness, flushing, constipation (verapamil), nausea
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X: nitroprusside
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cyanide toxicity (releases CN)
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X: captopril and other ACE inhibitors
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Cough
Angioedema Proteinuria Taste changes hypOtension Pregnancy problems (fetal renal damage) Rash Increased renin Lower angiotensin II (hyperkalemia) |
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X: losartan
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fetal renal toxicity, hyperkalemia
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what cardiac drugs are particularly contraindicated in pregnancy?
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ACE inhibitors and losartan (ARB)
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