OBJECTIVE To assess the diastolic effect of left bundle branch block in patients with dilated cardiomyopathy. DESIGN Retrospective study of M mode and Doppler echocardiograms along with electrocardiogram and phonocardiogram. SETTING Tertiary referral cardiac centre. PATIENT PARTICIPANTS: Fifty two patients with dilated cardiomyopathy, all with functional mitral regurgitation. Twelve with le...

Aberrant ventricular conduction was induced in 44 subjects by introduction of atrial premature beats through a transvenous catheter-electrode. Multiple patterns of aberrant ventricular conduction were obtained in 32 patients and, in the whole group, 116 different configurations were recorded. Of these, 104 showed a classical pattern of mono- or biventricular conduction disturbance. The pattern ...