title: ECG of the month.
authors.affiliation: Veterinary Medical Teaching Hospital, University of California, Davis 95616.
authors.forename: R M
authors.initials: RM
authors.lastname: Quagliariello
authors.forename: E
authors.initials: E
authors.lastname: de Madron
mesh_terms: D000818:Animals; D004283:Dog Diseases / Q000175:diagnosis*; D004285:Dogs; D004562:Electrocardiography / Q000662:veterinary*; D008297:Male; D012804:Sick Sinus Syndrome / Q000175:diagnosis / Q000662:veterinary*