title: An unusual ECG from a patient with an atriobiventricular pacemaker.
authors.affiliation: University of Ottawa Heart Institute, Ontario, Canada.
authors.forename: S P
authors.initials: SP
authors.lastname: Connors
authors.forename: A S
authors.initials: AS
authors.lastname: Tang
mesh_terms: D002304:Cardiac Pacing, Artificial; D004562:Electrocardiography; D005500:Follow-Up Studies; D006325:Heart Atria; D006333:Heart Failure / Q000503:physiopathology* / Q000628:therapy; D006339:Heart Rate; D006352:Heart Ventricles; D006801:Humans; D008297:Male; D008875:Middle Aged; D019919:Prosthesis Implantation; D013318:Stroke Volume