Marathon Runner Has History of A-fib

ANSWER

This ECG shows marked sinus bradycardia with a first-degree atrioventricular block and nonspecific T-wave abnormality. The QT interval of 524 ms is consistent with prolonged QT interval but is normal when corrected for rate.

These findings were consistent with previous ECGs. Since the patient’s bradycardia is asymptomatic, no intervention (ie, placement of a permanent pacemaker) is indicated.