A Clinical Exploration of One of the Longest Documented Ventricular Pauses in an Ambulatory Patient.

Cardiac conduction system abnormalities, such as sinus nodal dysfunction and AV block, can lead to significant bradyarrhythmias and pauses, potentially causing symptoms like dizziness and loss of consciousness. Monitoring these rhythm disturbances is crucial, as they may evolve and indicate underlying structural heart disease or lead to more serious arrhythmias. We present the case of a 76-year-old man with an exceptionally prolonged 62-second ventricular pause, followed by a single ventricular beat and an additional 24-second pause before normal rhythm resumes. He presented recurrent, intermittent, and unpredictable episodes of dizziness that were not associated with postural changes. A resting electrocardiogram (ECG) showing a normal sinus rhythm with first-degree heart block prompting placement of the event monitor and that detected the ventricular pauses. To our knowledge, our case represents one of the longest documented ventricular pauses in an ambulatory patient, emphasizing the need for ongoing evaluation in similar cases and the potential benefits of earlier intervention to prevent serious complications and death.