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58 Cards in this Set
- Front
- Back
extremely short acting agent (15 - 20 sec) administered IV for the control of atrioventricular (AV) nodal arrythmias
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adenosine
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moa:
-interact with specific G-protien coupled receptors -inc K current in atria, sinus and AV node -shorten AP duration -hyperpolarization and slowing of normal automaticy |
adenosine
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used for tx of acute termination of re-entrant supraventicular tachycardia
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adenosine
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se: flushing and hypotension, which are short lived and do not limit use of agent
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adenosine
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long acting class III antiarrhythmic associated with pulmonary fibrosis, thyroid dysfunction and corneal micro deposits
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amiodarone
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anti-arrhythmic?
-used to tx ventricular tachycardia or fibrallation -a structural analog of thyroid hormones -ae: prolong PR, QT and QRS interval -safe for afib and hf -exerts non-competitive adrenergic block effect, blocks Na channels |
amidarone , class II anti-arrhythmic, K channel blocker
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used for the txmt of congestive hf, this agent contains TWO isomers, one with non-selective B blocking and one with a1 blocking activity
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carvedilol
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moa: inhibits oxygen radical mediated lipid peroxidation and reduce smooth muscle mitogenisis
-dec mortality |
carvediolol
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bile acid binding resins used in teh management of hyperlipidemia
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cholestyramine
colestipol colesevelam |
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prevent enterohepatic recycling thus diverting hepatic efforts to renewing bile acids instead of producing plasma lipids
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cholestyramine
colestipol colesevelam |
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these agents fxn to slow conduction velocity by slowing the rate and rise of action potential
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Class IA antiarrhythmics
-quinidine -procainamide -dispramide |
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most common cardiac complication of
Class IA antiarrhythmics -quinidine -procainamide -dispramide |
prolonged QT interval
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induces alpha adrenergic receptor block and vagal inhibitin
-given IV ae: hypotension and sinus tachycardia |
quinidine
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ae of both quinidine and procainamide
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lupus like syndrome
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class of antiarrythmics which help maintain SA node rhythem after cardioconverstion for atrial fibrilation and may cause torsade de pointes arrhythmias (associated with diarrhear induced hypokalemia)
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Class IA antiarrhythmics
-quinidine -procainamide -dispramide |
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fxn to dec the action potential duration by shorting the repolarization phase
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class IB antiarrhythmics
-lidocane -mexiletine -tocainide -phenytoin |
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2 oral antiarrhythmics with ae of fatal bone marrow aplasia and pulmonary fibrosis
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mexiletine and tocainide
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IV antiarrhythmic with toxicity of nystagmus, tremors, dysarthria and altered mental status
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lidocaine toxicity
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renally excreted class IB antiarrhythmic that can cause fatal bone marrow aplasia and pulmonary fibrosis
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tocainide
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group of antiarrhythmics used to tx ventricular arrhythmias associated with MI as well as digitoxin-induced arrhythmias
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class IB antiarrhythmics
-lidocane -mexiletine -tocainide -phenytoin |
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used for tx of refractory ventricular arrhythmias, as well as for rapid atrial arrhythmias associated with Wolf-parkinson-White syndrome
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Class IC antiarrrhythmics
-felcainide -propaffenone |
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antiarrhythmic that blocks Na, K, and Ca channels and prolongs PR, QRS, and QT intervals
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class IC - flecainide
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antiarrhythmic that blocks Na and K
-approved for maintainance of sinus rhythem in pt with supravetricular arrhythmias |
class IC propafenone
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function to slow conduction velocity in atrial and ventricular cells but do not affect teh action potential
-typically used as last resort , as their use is associated with drug induced arrhythmias -can kill people with structural heart disase such as heart failure |
Class IC antiarrrhythmics
-felcainide -propaffenone |
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these agents dec teh automaticity of the pacemaker tissue of the heart, resulting in prolonged AV conduction and slower HR
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class II antiarrhythmics
-propranolol -esmolol -carvediol -metoprolol -bisoprolol |
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moa: reduce magnitude of Ca and K current therefore, dec hr and inc AV conduction
ae: mask hypoglycemia, bronchospasms, impotence |
class II antiarrhythmics
-propranolol -esmolol -carvediol -metoprolol -bisoprolol |
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moa:
1. inhibit cardiotoxicity of catecolamines 2. inc density of B1 receptors 3. dec neurohormonal activity |
class II antiarrhythmics
-propranolol -esmolol -carvediol -metoprolol -bisoprolol |
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category of antiarrhythmics that show reduced mortality for pt with hf
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class II antiarrhythmics
-propranolol -esmolol -carvediol -metoprolol -bisoprolol |
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used for txmt of recurrent ventricular arrhythmias
-many of these agents can precipitate torsade de pointe arrhythmias |
classs II antiarrhythmics
-sotalol -ibutilide -brtylium -amiodarone |
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these agents prolong the action potential by blocking potassium channels
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classs II antiarrhythmics
-sotalol -ibutilide -brtylium -amiodarone |
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ae:
-pulmonary fibrosis -corneal microdeposits -hepatic dysfxn -hypo/hyper thyroidism -photosensitvity |
classs II antiarrhythmics
-sotalol -ibutilide -brtylium -amiodarone |
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used for atrial arrhythmias and nodal re-entry as well as hypertension and angina, these agents inhibit Ca voltage channels
-major effect on av and sinus node |
Class IV antiarrhythmics
-verapamil -diltiazem |
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centrally acting alpha-2 agonist that reduces sympathetic autonomic nervous system outflow, resulting in decreased blood pressure
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clonidine
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ae: rebound htn, mi, tremor and tachycardia
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clonidine, all these ae occur when the drug is abruptly discontinued
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used in the management of congestive heart failure, these drugs are reversible inhibitors of Na/K ATPase
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digitoxin and digoxin
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inc left ventricular ejection fraction, inc co, and inc exercise capacity
ae: narrow therapeutic window |
digitoxin
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ae:
-see gi (n/v) and cns (hallow light) effect with toxicity first -must watch renal fxn - can lead to renal failute |
digitoxin and digoxin
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pt with low K, low Mg, high Na or high Ca can experience arrhythmias with these agents
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digitoxin and digoxin
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agents that dec triglycerides dramatically by stimulating lipoprotein lipase
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fibric acids
gemfibrozil fenofibrate clofiprate |
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antihyperlipedimic drug associated iwth gallstones and hepatobillary neoplasms
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clofibrate - fibric acid
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antihypertensive drug that blocks the release of norepinephrine by replacing it from intracellular vesicles
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guanethidine
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ae include serious orthostatic hypotension
-effects of the drug are antigonized by tricyclic antidepresants |
guanethidine
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used for txmt of ventricular arrhythmias, esp following MI bc it works only on ischemic tissue
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lidocaine
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inc threashold, dec phas 4 slope, dec conduction velocity of fast response tissue
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lidocaine
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alpha-2 agonist dec adrenergic outflow from CNS, resulting in dec peripherial resistance and dec blood pressure
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methyldopa
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-centrally acating antihypertensive agent
-inhibits central release of NE -reduces central output of vasoconstrictive impulse |
methyldopa
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prefered drug for txmt of htn during pregnancy
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methyldopa
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drug can haptenate rbc protiens resulting in an autoimmune hemolytic anemia
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methyldopa
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ae:
sedation dry mouth low libido parkinson signs ***hyperprolactinemia |
methyldopa
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lipid-lowering agent that causes cutaneous flushing, which can be avoided by administering concurrently with aspirin
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Niacin
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directly reduces the secretion of VLDLs from and apolipoprotien synthesis by the liver, while inc HDL
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niacin
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causes an inc in cGMP within vascular smooth muscle, resulting in dec preload to heart and dec bp
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nitroglycerin
isosorbid dinitrate |
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administer as sublingual patch to dec 1st pass effect
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nitroglycerin
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potential se:
cyanide poisoning postural hypotension throbbinb head ache flusing |
nitroglycerin
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contraindicated for use with seldeafil, a PDE-5 inhibitor
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nitroglycerin
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rarely used antihypertensive agent
-blocks the storage and release of caecholamines and serotonin from neurons |
reserpine
drug readily enters cns and can cause suicidal depression adn parkinson like symptoms |
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inhibits the rate-limiting enzyme of cholesterol syntehsis, HMG-CoA reductase, resulting in dramatically decreased LDL levels
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Statins
lovastatin pravastatin simvastatin atorvastatin |
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ae:
-may cause elevated liver enzymes -myositis with ince creatine kinase from skeletal muscles -rare: rhabdomyolysis |
Statins
lovastatin pravastatin simvastatin atorvastatin |