title: Variable morphology wide complex rhythm: what is the etiology?
abstract: We report a case of an infant who developed transient complete heart block following aortic and mitral valve surgery. In the course of his recovery, he developed a variable morphology wide complex rhythm with intermittent narrow complex beats. Review of his initial postoperative electrocardiogram (ECG), which demonstrated a right bundle branch block, helped to clarify the rhythm.
authors.affiliation: Pediatric Arrhythmia Service, Division of Pediatric Cardiology, Morgan Stanley Children's Hospital of New York Presbyterian Hospital, Columbia University, New York, New York 10032, USA.
authors.forename: Eric S
authors.initials: ES
authors.lastname: Silver
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Starc
authors.forename: Robert H
authors.initials: RH
authors.lastname: Pass
authors.forename: Leonardo
authors.initials: L
authors.lastname: Liberman
mesh_terms: D001011:Aorta / Q000601:surgery; D001018:Aortic Diseases / Q000601:surgery; D001283:Atrioventricular Node / Q000503:physiopathology; D002037:Bundle-Branch Block / Q000175:diagnosis / Q000209:etiology / Q000628:therapy; D003937:Diagnosis, Differential; D004562:Electrocardiography / Q000379:methods*; D006327:Heart Block / Q000175:diagnosis* / Q000209:etiology* / Q000628:therapy; D006349:Heart Valve Diseases / Q000601:surgery; D006801:Humans; D007223:Infant; D008297:Male; D008943:Mitral Valve / Q000601:surgery; D008991:Monitoring, Physiologic / Q000379:methods; D010138:Pacemaker, Artificial; D011183:Postoperative Complications / Q000175:diagnosis / Q000209:etiology*