Journal of Veterinary Clinics (한국임상수의학회지)

The Korean Society of Veterinary Clinics (한국임상수의학회)
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Congenital Aortic Valvular Insufficiency Caused by Abnormal Valvular Structures in a Labrador Retriever Dog

래브라도 리트리버종 개의 비정상 판막 구조에 의한 선천성 대동맥 판막 부전

  • Moon, Hyeong-Sun (Section of Small Animal Internal Medicine, School of Veterinary Medicine, Kangwon National University) ;
  • Lee, Seung-Gon (Section of Small Animal Internal Medicine, School of Veterinary Medicine, Kangwon National University) ;
  • Lee, Sang-Eun (Section of Small Animal Internal Medicine, School of Veterinary Medicine, Kangwon National University) ;
  • Hyun, Chang-Baig (Section of Small Animal Internal Medicine, School of Veterinary Medicine, Kangwon National University)
  • 문형선 (강원대학교 수의(학부)대학 소동물 내과교실) ;
  • 이승곤 (강원대학교 수의(학부)대학 소동물 내과교실) ;
  • 이상은 (강원대학교 수의(학부)대학 소동물 내과교실) ;
  • 현창백 (강원대학교 수의(학부)대학 소동물 내과교실)
  • Published : 2007.06.30
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Abstract

A 10-month-old intact male Labrador Retriever dog was referred with the primary complaint of exercise intolerance, especially after vigorous exercise. Physical examination revealed split S1 and grade III/VI diastolic regurgitant murmur at the left apex and base, respectively. ECG finding was normal sinus rhythm at rest, but supraventricular tachycardia with bundle branch blocks after exercise. Thoracic radiography revealed dilated ascending aorta with normal range of cardiac silhouette (VHS 10.2). Echocardiography revealed abnormal valvular structures just 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 valvular structures. The dog was managed with diltiazem and exercise restriction. This is a rare case of aortic deformity in dogs.

10 개월령 수컷 래브라도 리트리버종 개가 특히 과도한 운동 이후에 나타나는 운동 불내성으로 내원하였다. 신체검사에서 좌측 심첨부와 심저부에서 제1심음의 분열음과 grade III/IV의 이완기 역류성 잡음이 청진되었다. 심전도 검사에서 휴식기에는 정상 동박동을 나타낸 반면, 운동 후에는 각 차단과 함께 심실상성 빈맥이 나타났다. 흉부 방사선에서는 정상 심장크기(VHS 10.2)이나, 확장된 상행 대동맥이 관찰되었다. 심장초음파에서는 대동맥 판막상단부위에서 기시된 비정상적인 판막성 구조물에 의해 대동맥 역류증이 관찰되었고 그 결과 좌심실 박출율(LVEF)이 감소되는 소견을 보였다. 상기의 결과를 토대로 본 증례를 비정상의 판막 구조물에 의한 선천성 대동맥 역류증으로 진단하였다. 환자에게 diltiazem을 처방하였으며, 운동제한을 시켰다. 본 증례는 매우 드물게 보고되는 대동맥 판막 기형이다.

Keywords

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