Normalisation of a bundle branch block pattern in early beats. The "supernormal" phase of intraventricular conduction intraventricular block due to phase 4 diastolic depolarisation.
D000368:Aged; D000787:Angina Pectoris / Q000503:physiopathology; D002037:Bundle-Branch Block / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006339:Heart Rate; D006801:Humans; D010138:Pacemaker, Artificial