Ventricular preexcitation in seven dogs and nine cats.
Ventricular preexcitation was diagnosed in 6 dogs and 7 cats examined because of weakness, syncope, or congestive heart failure, and as an incidental finding in 1 dog and 2 cats. Reciprocating tachycardias were documented in 8 of the cases. Six of the cats had a pathologic diagnosis of primary cardiomyopathy. Two of the dogs had an associated congenital heart defect. Reciprocating tachycardias were controlled in 4 cases with digoxin, in 2 cases with propranolol, and in 1 case with quinidine. Conduction through the accessory pathway was altered by quinidine (2 cases), digoxin, and propranolol (1 case each), resulting in a lengthened P-R interval and more normal QRS complex configuration.
D000818:Animals; D002371:Cat Diseases / Q000503:physiopathology*; D002415:Cats; D004077:Digoxin / Q000627:therapeutic use; D004283:Dog Diseases / Q000503:physiopathology*; D004285:Dogs; D004562:Electrocardiography; D005260:Female; D008297:Male; D011226:Pre-Excitation Syndromes / Q000150:complications / Q000188:drug therapy / Q000503:physiopathology / Q000662:veterinary*; D011433:Propranolol / Q000627:therapeutic use; D011802:Quinidine / Q000627:therapeutic use; D013610:Tachycardia / Q000150:complications / Q000188:drug therapy / Q000628:therapy
D004077:Digoxin; D011433:Propranolol; D011802:Quinidine