Exercise-induced atrioventricular block in a 66-year-old man progressed to complete AV block requiring resting ventricular pacing 4 years after initial presentation and pacemaker implantation.
Case Report (n=1)
No
Exercise-induced AV block is not a benign condition and can progress to complete AV block over time, highlighting the potential need for pacing and long-term follow-up.
A 66-year-old man presented with dyspnea which occurred while running for 3 months. His resting electrocardiogram was normal, but a treadmill test revealed a 2:1 atrioventricular (AV) block when the sinus rate increased to 142 beats per minute. We diagnosed exercise-induced AV block and implanted a dual-chamber pacemaker. Initially, the ventricles were paced mainly during exercise. However, the patient became dependent on ventricular pacing at rest 4 years after the initial presentation, and progression to complete AV block was thereafter confirmed. This case highlights that exercise-induced AV block is not a benign condition, and AV conduction can deteriorate further over time.
Komaki et al. (Thu,) conducted a case report in Exercise-induced atrioventricular block (n=1). Dual-chamber pacemaker implantation was evaluated on Progression to complete AV block. Exercise-induced atrioventricular block in a 66-year-old man progressed to complete AV block requiring resting ventricular pacing 4 years after initial presentation and pacemaker implantation.
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