Winter Randolph L, Remaks Julia D, Newhard Daniel K
Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH, United States.
Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Auburn University, Auburn, AL, United States.
Front Vet Sci. 2020 Feb 26;7:103. doi: 10.3389/fvets.2020.00103. eCollection 2020.
An 8-year-old intact female Chihuahua was presented for evaluation and possible occlusion of a previously diagnosed patent ductus arteriosus (PDA). Transthoracic echocardiography revealed left ventricular and left atrial enlargement, enlargement of the main pulmonary artery, and a PDA with bidirectional shunting. Tricuspid regurgitant velocities suggested moderate pulmonary hypertension. The PDA was occluded with an Amplatz® Canine Duct Occluder using a transarterial approach on the following day. No immediate complications were observed other than an acute decrease in left ventricular systolic function. One day after the PDA occlusion transthoracic echocardiography revealed no residual ductal flow, but there was spontaneous echocardiographic contrast in the left ventricle. The patient was discharged with sildenafil, pimobendan, and clopidogrel. Five weeks later when the patient was presented for a recheck examination, the previously documented spontaneous echocardiographic contrast was no longer present. Finding spontaneous echocardiographic contrast in the dog has not previously been reported in association with PDA occlusion.
一只8岁未绝育的雌性吉娃娃犬因评估及可能封堵之前诊断出的动脉导管未闭（PDA）前来就诊。经胸超声心动图显示左心室和左心房增大、主肺动脉增宽，以及存在双向分流的动脉导管未闭。三尖瓣反流速度提示中度肺动脉高压。次日采用经动脉途径用Amplatz®犬用导管封堵器封堵动脉导管未闭。除左心室收缩功能急性下降外，未观察到即刻并发症。动脉导管未闭封堵术后一天，经胸超声心动图显示无残余导管血流，但左心室内有自发超声造影。患者出院时带了西地那非、匹莫苯丹和氯吡格雷。五周后患者前来复诊时，之前记录的自发超声造影已不复存在。此前未见有关于犬动脉导管未闭封堵术后出现自发超声造影的报道。
