Left bundle branch block in infants with dilated cardiomyopathy conveys a poor prognosis.
We describe three infants <3 months of age seen consecutively with dilated cardiomyopathy who presented initially with left bundle branch block on the surface 12-lead electrocardiogram. Each infant subsequently had a poor outcome: two died and one required heart transplantation. These results suggest that the presence of left bundle branch block on the 12-lead electrocardiogram conveys a poor prognosis in infants with dilated cardiomyopathy.
D002037:Bundle-Branch Block / Q000150:complications* / Q000175:diagnosis* / Q000188:drug therapy; D002311:Cardiomyopathy, Dilated / Q000150:complications* / Q000175:diagnosis / Q000188:drug therapy; D002316:Cardiotonic Agents / Q000627:therapeutic use; D004452:Echocardiography; D004562:Electrocardiography; D017809:Fatal Outcome; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011379:Prognosis