#april2020mccqe1
A 45-year-old man presents to a physician because of repeated episodes of fainting. The radial pulse is erratic, with multiple skipped beats at a rate of 45 beats/min. An ECG shows a normal sinus rhythm at a rate of 60/min. An echocardiogram reveals a 2-cm mass that is acting like a “ball valve” to produce intermittent obstruction of flow. Which of the following is the most likely location of this patient’s lesion?
(A) Aorta
(B) Left atrium
(C) Left ventricle
(D) Right atrium
(E) Right ventricle
A 45-year-old man presents to a physician because of repeated episodes of fainting. The radial pulse is erratic, with multiple skipped beats at a rate of 45 beats/min. An ECG shows a normal sinus rhythm at a rate of 60/min. An echocardiogram reveals a 2-cm mass that is acting like a “ball valve” to produce intermittent obstruction of flow. Which of the following is the most likely location of this patient’s lesion?
(A) Aorta
(B) Left atrium
(C) Left ventricle
(D) Right atrium
(E) Right ventricle
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