Internal-Medicine

CHAPTER 1
Cardiology
Questions
DIRECTIONS (Questions 1 through 61): Each of
the numbered items in this section is followed by
answers. Select the ONE lettered answer that is
BEST in each case.
1. A 62-year-old man with coronary artery disease
(CAD) presents with presyncope. His
physical examination is normal except for
bradycardia (pulse 56 beats/min) and an irregular
pulse. The electrocardiogram (ECG) shows
Wenckebach’s type atrioventricular (AV) block.
Which of the following are you most likely to
see on the ECG?
(A)
(B)
(C)
(D)
(E)
progressive PR shortening
progressive lengthening of the PR interval
tachycardia
dropped beat after PR lengthening
fixed 2:1 block
2. A 72-year-old woman had a pacemaker
inserted 4 years ago for symptomatic bradycardia
because of AV nodal disease. She is clinically
feeling well and her ECG shows normal
sinus rhythm at a rate of 68/min but no pacemaker
spikes. Her pacemaker only functions
when the ventricular rate falls below a preset
interval. Which of the following best describes
her pacemaker function?
3. A 42-year-old man develops shortness of breath
(SOB) and chest pain 7 days after an open
cholecystectomy. His blood pressure is 145/86
mm Hg, pulse is 120/min, respirations 24/min,
and oxygen saturation of 97%. Pulmonary
embolism is clinically suspected. Which of the
following is the most common ECG finding of
pulmonary embolism?
(A) a deep S wave in lead I
(B) depressed ST segments in leads I and II
(C) prominent Q wave in lead I, and
inversion of T wave in lead III
(D) sinus tachycardia
(E) clockwise rotation in the precordial
leads
4. A 63-year-old woman develops exertional
angina and has had two episodes of syncope.
Examination shows a systolic ejection murmur
with radiation to the carotids and a soft S 2
. Which
of the following is the most likely diagnosis?
(A)
(B)
(C)
(D)
(E)
mitral stenosis
mitral insufficiency
aortic stenosis
aortic insufficiency
tricuspid stenosis
(A)
(B)
(C)
(D)
(E)
asynchronous
atrial synchronous
ventricular synchronous
ventricular inhibited
atrial sequential
1
Copyright © 2007 by The McGraw-Hill Companies, Inc. Click here for terms of use.