Answer 14

14.  Choice B is the correct answer.  This is a first degree AV Block.  This is characterized by a long PR interval over 0.2.  There are no dropped QRS complexes.  Pacemaker insertion is appropriate for third degree AV block.  Digoxin is used for rate control with atrial fib and also for patients who need inatropic support with there ejection fraction.  Defibrillation is appropriate for ventricular tachycardia, ventricular fibrillation, and unstable narrow complex tachycardia.