Answer to Question 1
Ans: C
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Disopyramide (Norpace) decreases depolarization of myocardial fibers, prolongs the refractory period, and increases the action potential duration of cardiac cells. Lidocaine (Xylocaine) decreases diastolic depolarization, decreases automaticity of ventricular cells, and raises the threshold of the ventricular myocardium. Quinidine depresses myocardial excitability or the ability of the myocardium to respond to an electrical stimulus. Flecainide (Tambocor) depresses fast sodium channels, decreases the height and rate of rise of action potentials, and slows conduction of all areas of the heart.
Answer to Question 2
Ans: B
Feedback:
Atrial fibrillation is characterized by irregular and rapid atrial contraction, resulting in a quivering of the atria and causing an irregular and inefficient ventricular contraction. Atrial flutter is the rapid contraction of the atria at a rate too rapid for the ventricle to pump efficiently. Ventricular tachycardia is a rapid heartbeat with a rate greater than 100 bpm. Ventricular fibrillation is rapid, disorganized contractions of the ventricles, resulting in the inability of the heart to pump any blood to the body.
Application of an ostomy bag or pouch: B, An ostomy nurse applying an ostomy bag to a stoma;
Sublingual drug administration
Drug Classification and Description of Use
Hands-on class in a massage therapy program.
A Drug’s Plateau Level
An 8th grade class develops a linear model that predicts the number of cheerios (a small round ...