Incidence of conduction defects in African and coloured patients with congestive cardiomyopathy.

The electrocardiograms of i95 patients (78 Coloured and II7 Bantu) presenting with congestive cardiomyopathy have been studied. The tracings had a fairly uniform pattern showing left ventricular hypertrophy in every case, frequent left atrial enlargement, the absence of right ventricular hypertrophy, and the rarity of right axis deviation in the absence ofpulmonary embolism. A study of the conduction defects showed the ab-