[Disorders of heart rhythm in patients with mitral valve prolapse detected by continuous electrocardiography].

Prolapse of the mitral valve is a frequent occurrence. It is usually benign. However, because of frequent arrhythmias that can provoce sudden death, its detection and treatment are of great importance. In 20 patients with prolapse of the mitral valve the authors detected arrhythmias on a 24-hour electrocardiogram. The results were as follows: ventricular arrhythmias in 50% of patients; auricular arrhythmias in 50% of cases; atrioventricular and sinoatrial block in 5% of subjects, and block of the left bundle-branch in 2% of patients.