Yoshida Tomohiko, Chieh-Jen Cheng, Mandour Ahmed Said, Hendawy Hanan Attia Mahmoud Mohamed, Machida Noboru, Uemura Akiko, Tanaka Ryou
Department of Veterinary Surgery, Tokyo University of Agriculture and Technology, Fuchu-shi, Japan.
Laboratory of Veterinary Internal Medicine, Nihon University, Fujisawa-shi, Japan.
Vet Med (Praha). 2022 Jan 12;67(4):212-217. doi: 10.17221/52/2021-VETMED. eCollection 2022 Apr.
A two-month-old, male intact, mixed-breed cat weighing 0.6 kg was presented with respiratory distress and anorexia. From the transthoracic echocardiographic, reduced fractional shortening (FS) and increased endocardial echogenicity were recognised with severe congestive heart failure (CHF). The kitten was administered an antibiotic and pimobendane under oxygen supplementation in an ICU cage. However, the respiratory condition worsened and the cat died the next day, and the subsequent necropsy and histopathology examinations confirmed endocardial fibroelastosis (EFE). There is a lack of information regarding the antemortem cardiac function evaluated by tissue Doppler imaging (TDI) in EFE cases. We report on the echocardiographic findings including the TDI in the EFE cat with a concomitant necropsy and histopathology confirmation in this paper. The echocardiographic findings showed presence of a ventricular false tendon within the left ventricle, a decrease in the left ventricular contractility (FS 11.1%, and a marked CHF). In this case, the echocardiographic findings were consistent with the human counterpart. However, these findings were like those of dilated cardiomyopathy and, hence, non-specific to EFE. As a result, veterinarians should keep in mind that endocardial fibroelastosis might be a possible reason for respiratory distress resulting from CHF with a low fractional shortening in young cats.
一只两个月大、未绝育的雄性混血猫，体重0.6千克，出现呼吸窘迫和厌食症状。经胸超声心动图检查显示，严重充血性心力衰竭（CHF）导致缩短分数（FS）降低和心内膜回声增强。这只小猫在重症监护病房的笼子里接受了抗生素和匹莫苯丹治疗，并给予了氧气补充。然而，呼吸状况恶化，猫于次日死亡，随后的尸检和组织病理学检查证实为心内膜弹力纤维增生症（EFE）。关于EFE病例中通过组织多普勒成像（TDI）评估的生前心脏功能，目前缺乏相关信息。本文报告了一只患有EFE的猫的超声心动图检查结果，包括TDI检查结果，并伴有尸检和组织病理学证实。超声心动图检查结果显示左心室内存在室性假腱索，左心室收缩力降低（FS为11.1%），且有明显的CHF。在这种情况下，超声心动图检查结果与人类的情况一致。然而，这些结果与扩张型心肌病的结果相似，因此对EFE不具有特异性。因此，兽医应牢记，心内膜弹力纤维增生症可能是幼猫因CHF导致缩短分数低而出现呼吸窘迫的一个可能原因。
