A+ 125 QUESTIONS WITH 100% CORRECT ANSWERS
A 23-year-old male presents after a syncopal episode. EKG findings include normal sinus rhythm, a
short PR interval (less than 0.12 seconds), QRS duration of 0.11 seconds, and the presence of a "delta
wave" (a slurred upstroke to the QRS complex). What condition most likely caused the syncopal
episode?
A. Vasovagal reaction
B. Wolff-Parkinson-White syndrome
C. Brugada syndrome
D. Dextrocardia - B
Of the options below, the therapy best for symptomatic 3rd degree heart block is:
A. oxygen
B. cardioversion
C. lidocaine
D. transcutaneous pacer
E. atropine - D
A 54 year old female presents with palpitations. She is otherwise asymptomatic. EKG shows atrial
fibrillation. Vital signs are HR 130-150, BP 148/78, RR 16, T 36.7. What management intervention is
most important to accomplish next?
A. Pharmacologic ventricular rate control
B. Radiofrequency ablation
C. Anticoagulation
D. Cardioversion - A
An 8 year old female presents with a regular, narrow-complex SVT. You diagnose AV nodal reentrant
tachycardia. Which pharmacologic agent would be most appropriate for initial management?
A. Diltiazem
B. Adenosine
, C. Lidocaine
D. Digoxin - The answer is B. "Adenosine, a purinergic blocking agent that causes acute and transient
AV nodal blockade, is the drug of choice for acute termination of AVNRT. Multiple studies have
shown that adenosine is nearly 100 percent effective in terminating AVNRT."
A 65 year old male presents to the emergency department with chest pain. Cardiac monitoring
shows a wide complex tachycardia. Past medical history is significant only for hypertension. His BP is
100/66, HR 144, RR 24, and T. 37.5. In addition to ongoing chest pain, he reports dyspnea. His level of
consciousness is mildly decreased. Management should proceed on the assumption that he has what
abnormal rhythm?
A. Wolff-Parkinson-White syndrome with retrograde conduction
B. Ventricular tachycardia
C. Sinus tachycardia with LVH
D. Supraventricular tachycardia with aberrancy - The answer is B. "Unstable patients with a wide-
complex tachycardia should be treated as if ventricular tachycardia is present. "
The best treatment, of the options below, for a patient with second degree AV block Mobitz Type II
is:
A. transvenous pacing
B. lidocaine
C. amiodarone
D. epinephrine
E. aspirin - a
Where are the normally dominant pacemaker cells of the heart found?
A. bundle of His
B. accessory pathway of Kent
C. atrioventricular node
D. sinoatrial node - d
A 22 year old female presents to the emergency department with a "funny feeling" in