Fatal Cardiac Arrest during Continuous Ambulatory Monitoring

Abstract
To the Editor: Paramedical teams have found that 75 per cent of persons with out-of-hospital cardiac arrest have ventricular fibrillation, whereas the remainder have bradycardia or asystole.1 , 2 However, Winkle has pointed out that there are only eight reported cases of cardiac arrest during continuous ambulatory Holter recording.3 We wish to report another such case.A continuous ambulatory electrocardiographic recording was begun in a 71-year-old man as a screening examination for a research protocol. He had a history of hypertension, smoking, prior myocardial infarction, and ventricular ectopy. He was asymptomatic when the recording was initiated. On the same day, his standard . . .