Congenital Aortic Valvular Insufficiency caused by Abnormal Valvular Structures in a Labrador Retriever Dog

초록

intolerance, especially after vigorous exercise. Physical examination revealed split S1 and grade III/VI diastolicregurgitant murmur at the left apex and base, respectively. ECG finding was normal sinus rhythm at rest, butsupraventricular tachycardia with bundle branch blocks after exercise. Thoracic radiography revealed dilated ascendingaorta with normal range of cardiac silhouette (VHS 10.2). Echocardiography revealed abnormal valvular structuresjust above the aortic valvular cusps causing aortic regurgitation with a reduction of left ventricular ejection fraction(LVEF). Based on those findings, the case was diagnosed as congenital aortic regurgitation caused by abnormal valvularstructures. The dog was managed with diltiazem and exercise restriction. This is a rare case of aortic deformity in dogs.