title: ECG of the month. Irregular rhythm and intermittent tachycardia, with a heart rate of 150 to 188 beats/min.
mesh_terms: D000818:Animals; D001145:Arrhythmias, Cardiac / Q000175:diagnosis / Q000662:veterinary; D004283:Dog Diseases / Q000175:diagnosis*; D004285:Dogs; D004562:Electrocardiography / Q000662:veterinary*; D008297:Male; D013616:Tachycardia, Sinus / Q000175:diagnosis / Q000662:veterinary*