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Which of the following abnormalities is seen in this electrocardiogram of a 52-year-old woman with lightheadedness?
A.
Second-degree atrioventricular block
B. Sinus arrest
C. Sinus arrhythmia
D. Sinus bradycardia
| Answer A is incorrect. Try again. |
| Answer B is incorrect. Try again. |
| Answer C is incorrect. Try again. |
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Correct! Correct Answer: D. Sinus bradycardia Educational Objective: Identify sinus bradycardia on electrocardiogram. Critique: This electrocardiogram demonstrates sinus bradycardia, defined as a sinus rhythm (upright P wave in lead II and a constant PR interval) with a heart rate of 60/min or slower. |