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Cardiolog Drugs Actions only
Actions, for which the name of the drug must be provided
15
Health Care
Professional
01/12/2012

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Term
Inhibits reabsorption of Na+, Cl- and water in the loop of Henle, as well as in the convoluted tubule of the nephron, which causes decreased absorption of water and therefore increases urine production.
Definition
Lasix (Furosemide)
Loop Diuretic
Term
CNS depressant, depressant of smooth, skeletal, cardiac muscle
Definition
Magnesium Sulfate
Electrolyte
Term
(Binds with alpha & beta receptors) B1 (heart): increases inotropy, dromotropy, chronotropy, AV conduction. B2: bronchodilation; Alpha: vasoconstriction
Definition
Epinephrine (Adrenalin)
Sympathomimetic
Term
Acts directly on the myocardium to delay depolarization & increase the duration of the action potential.
Definition
Amiodarone (Cordarone)
Class III antiarrhythmic (K+ blockade) w/ effects of all other classes
Term
Blocks Ca++ from moving into myocardial cells, which prolongs conduction of electrical impulses through AV Node, controlling ventricular rate.
Definition
Cardizem (Diltiazem)
Non-DHP Ca++ channel blocker (Class IV antiarrhythmic)
Term
Blocks influx of Na+ through membrane pores which suppresses atrial & ventricular arrhythmias by slowing conduction in myocardial tissue.
Definition
Procainamide (Pronestyl)
K+ & Fast Na+ channel blocker (class 1a)
Term
Blocks beta 1 receptor sites (SA, AV, ventricles) causing decreased HR, CO, BP.
Definition
Metoprolol (Lopressor, Toprol XL)
Beta blocker (class II)
Term
Competes w/ Ach receptor sites @ SA & AV nodes causing increased HR by increasing conduction @ nodes. Inhibits secretions by decreasing PNS effects on salivary, bronchial, sweat, heart, GI tract.
Definition
Atropine Sulfate
Anticholinergic
Term
Relaxes smooth muscles, dilating peripheral arteries/veins which causes venous pooling, decreasing venous return to the heart & therefore preload. Also decreases L ventricular systolic wall tension, decreasing afterload.
Definition
Nitroglycerin (Nitrolingual, Nitroquick, Nitro-Dur)
Antianginal (nitrate: generically nitrates cause vasodilation w/o blocking alpha sites. Relax smooth muscle.)
Term
Slows conduction of electrical impulses @ AV node.
Definition
Adenosine (Adenocard)
Antiarrhythmic (Endogenous nucleoside--The "A" of "ATP")
Term
Blocks Na+ channels, increasing recovery period after repolarization; Suppresses automaticity in His-Purkinje system & depolarization in ventricles.
Definition
Lidocaine (Xylocaine)
Fast Na+ channel blocker (1b antiarrhythmic)
Term
Blocks Ca++ from moving into the myocardium, which prolongs the conduction of electrical impulses through the AV node. Dilates arteries.
Definition
Verapamil (Isoptin)
Non-DHP CA++ channel blocker (Class IV)
Term
Prevents formation of TA2 which causes platelets to aggregate. (Interrupts step 1 of clotting.) Inhibits prostaglandin.
Definition
Aspirin (ASA)
Antiplatelet; Antipyretic; Nonnarcotic analgesic
Term
Vasoconstriction
Definition
Vasopressin (Pitressin)
Hormone (ADH); Nonadrenergic vasoconstrictor
Term
Low dose (5 mcg/kg/min) predominantly B1 effects (mostly inotropic--increased CO);
Med dose (10 mcg/kg/min) alpha & beta;
High dose (20 mcg/kg/min) alpha (vascular constriction)
Definition
Dopamine (Intropin)
Sympathomimetic; Inotrope; Vasopressor
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