Abstract
A 10-year-old 28.5-kg spayed female Boxer was presented to Animal Referral Centre for evaluation of ventricular arrhythmias. Polymorphic ventricular tachycardia had first been diagnosed 2 years earlier, when the dog was presented to an emergency clinic with suspected pancreatitis. Results of echocardiography and hematologic and serum biochemical testing performed at that time were unremarkable. The dog was started on sotalol (80 mg, PO, q 12 h)...