Epidemiological and Morphological Studies of Double-Chambered Right Ventricle in Dogs

Journal of Veterinary Medical Science

Rina HAMABE¹  Hisashi HIROSE²  Hidekazu KOYAMA²  Noboru MACHIDA⁴  Hirotaka MATSUMOTO²  Shuji SUZUKI¹  Kazuaki TAKASHIMA³  Ryuji FUKUSHIMA¹  Yuto SAIDA³  Ryou TANAKA¹  Shu NAKAO⁴  Yoshihisa YAMANE³ 

[1] Department of Veterinary Surgery, Faculty of Agriculture, Tokyo University of Agriculture and Technology;Department of Veterinary Internal Medicine, Faculty of Veterinary, Nippon Veterinary and Life Science University;Animal Clinical Research Foundation;Department of Veterinary Clinical Oncology, Faculty of Agriculture, Tokyo University of Agriculture and Technology

关键词: canine;    diagnosis;    double-chambered right ventricle;    echocardiography;    epidemiological research;   

DOI  :  10.1292/jvms.10-0485

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(22)Cited-By(1)The double-chambered right ventricle (DCRV) is a rare congenital cardiac disease in dogs, and its detailed epidemiological and morphological features are not clearly understood. By investigating the profile, clinical signs, and characteristics of examination findings of eleven dogs with DCRV by means of a retrospective study, we attempted to clarify the epidemiology and morphology of the condition. The study group consisted of nine males and two females. Breeds included Pug (n=3), Miniature Dachshund (n=1), French Bull-dog (n=1), Shiba (n=1), and Retrievers (n=5). The attachment site of the anomalous muscular bundle was continuous with the cardiac apex in nine dogs, and it was attached to the right ventricle free wall in the other two dogs. In dogs with DCRV, at least one of the following conditions was present concurrently: congenital or acquired tricuspid valve regurgitation (TR), ventricular septal defect, and atrial septal defect. Also, the pressure difference between the two chambers increased over time, and progressive right-sided heart failure was observed. In summary, DCRV occurs in small breeds of dog as well as in large breeds of dog and it may be more prevalent in males. The existence of two types of DCRV in dogs was established. Dog with DCRVs will have a high incidence of concurrent cardiac abnormalities. Concurrent TR may be either congenital or acquired. DCRV is a congenital disorder, but the clinical condition progresses as the dog develops.

【 授权许可】

Unknown