[Ventricular arrhythmias in mitral valve prolapse syndrome (author's transl)].

Long-term ECG monitoring over 22 hours and exercise ECGs were performed in 72 patients with mitral valve prolapse syndrome. 70% of the patients had ventricular arrhythmias. In 28% severe arrhythmias in the form of multifocal atopic beats and ventricular runs were demonstrated. Long-term ECG monitoring was a suitable method for detection of these arrhythmias and superior to exercise ECG. Clinical, electrocardiographic and echocardiographic findings could not be correlated to the severity of ventricular arrhythmias.