[2 cases of "normalization" of bundle branch block pattern by fused premature beat].
D000368:Aged; D002037:Bundle-Branch Block / Q000150:complications* / Q000503:physiopathology; D005117:Cardiac Complexes, Premature / Q000150:complications* / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged