RT Journal Article SR Electronic T1 Verapamil: a cause of sudden death in a patient with hypertrophic cardiomyopathy. JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 352 OP 354 DO 10.1136/hrt.51.3.352 VO 51 IS 3 A1 Perrot, B A1 Danchin, N A1 Terrier de la Chaise, A YR 1984 UL http://heart.bmj.com/content/51/3/352.abstract AB Sudden death was recorded by continuous ambulatory electrocardiographic (Holter) monitoring in a 62 year old man with hypertrophic cardiomyopathy and atrial fibrillation, who had been treated for four days with verapamil 360 mg orally. Analysis of the tape showed a third degree atrioventricular block followed by complete asystole. The sudden death could be related to treatment with verapamil.