title: Cor triatriatum sinister with incomplete atrioventricular septal defect in a cat.
abstract: An 11-month-old, 3 kg, female domestic shorthair cat was referred to evaluate cardiac structure and function. Echocardiography revealed the membrane dividing the left atrium into two chambers, a large defect in the lower part of the atrial septum, and turbulent blood flow from the distal left atrium into the right atrium. These findings suggested cor triatriatum sinister (CTS) with incomplete atrioventricular septal defect (AVSD). The cat was treated with medications for management of congestive heart failure. In the end, she died from right-sided heart failure 17 months after the initial presentation. At necropsy, a fibromuscular membrane with a round orifice in the left atrium and an ostium primum defect were confirmed, and the definitive diagnosis of CTS with incomplete AVSD was made. To our knowledge, this study presents the first case report of CTS with incomplete AVSD in a cat.
authors.affiliation: Department of Veterinary Clinical Oncology, Tokyo University of Agriculture and Technology, 3-5-8, Fuchu, Tokyo 183-8509, Japan.
authors.forename: Shu
authors.initials: S
authors.lastname: Nakao
authors.forename: Ryou
authors.initials: R
authors.lastname: Tanaka
authors.forename: Lina
authors.initials: L
authors.lastname: Hamabe
authors.forename: Shuji
authors.initials: S
authors.lastname: Suzuki
authors.forename: Huai-Che
authors.initials: HC
authors.lastname: Hsu
authors.forename: Ryuji
authors.initials: R
authors.lastname: Fukushima
authors.forename: Noboru
authors.initials: N
authors.lastname: Machida
mesh_terms: D000818:Animals; D002371:Cat Diseases / Q000175:diagnosis*; D002415:Cats; D003310:Cor Triatriatum / Q000150:complications / Q000175:diagnosis / Q000662:veterinary*; D004452:Echocardiography / Q000662:veterinary; D017809:Fatal Outcome; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000150:complications / Q000175:diagnosis / Q000662:veterinary*; D006345:Heart Septal Defects, Ventricular / Q000150:complications / Q000175:diagnosis / Q000662:veterinary*