title: A five year old with a pacemaker.
authors: Division of Pediatric Cardiology, New York Medical College, Valhalla 10595.
authors: P K
authors: PK
authors: Woolf
mesh_terms: D002037:Bundle-Branch Block / Q000150:complications / Q000503:physiopathology; D002675:Child, Preschool; D004314:Down Syndrome / Q000150:complications / Q000503:physiopathology; D004562:Electrocardiography; D006330:Heart Defects, Congenital / Q000601:surgery; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial