title: QRS normalization of bundle branch block by ventricular fusion.
abstract: A 61-year-old woman who suffered from acute inferior myocardial infarction with right bundle branch block developed complete atrio-ventricular block. QRS normalization of right bundle branch block as a result of ventricular fusion of the conducted sinus beat with right bundle branch block and idioventricular impulse originating in the ipsilateral side of the block is described.
mesh_terms: D002037:Bundle-Branch Block / Q000150:complications / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000150:complications; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications