Echocardiographic diagnosis of interventricular septum defect with Eisenmenger syndrome in an adult dog - case report

Q4 Veterinary Acta Veterinaria Brasilica Pub Date : 2022-01-25 DOI:10.21708/avb.2022.16.1.10159
Thays Ribeiro Pacó, Caroline Coelho Rocha, Zacarias Jacinto de Souza Júnior, J. M. A. P. Antunes
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Abstract

Interventricular septal defect (IVSD) is a congenital heart disease characterized by communication or non-closure of the interventricular septum in the embryonic or postnatal period, causing a failure in the separation between the systemic and pulmonary circulation. The severity of the hemodynamic consequences depends on the extent of the defect and the magnitude of the flow through it. Blood flow commonly occurs from left to right, because systemic vascular resistance is greater than pulmonary resistance. This report describes the echocardiographic findings in a 4-year-old male Poodle treated at the Veterinary Hospital with a history of exercise intolerance, cyanosis and episodes of syncope. On echocardiography, perimembranous IVSD was diagnosed with atrial and right ventricular dilatation, discontinuity of the interventricular septum in the subaortic region measuring approximately 5 mm. In the Doppler evaluation, reverse turbulent flow was evidenced, characterizing shunt from right to left (Eisenmenger syndrome). Despite preserved systolic function, abnormal relaxation was observed. Doppler echocardiography was a fundamental complementary imaging test for the diagnosis of this congenital heart disease since its suspicion is not commonly raised in adult patients. Doppler echocardiography allowed us to identify the defect, define its size and extension, determine the direction of blood flow as well as its hemodynamic consequences.
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成年犬室间隔缺损合并艾森曼格综合征的超声心动图诊断1例
室间隔缺损(室间隔缺损,室间隔缺损,室间隔缺损)是一种先天性心脏病,其特征是室间隔在胚胎期或出生后不能连通或不闭合,导致体循环和肺循环分离失败。血流动力学后果的严重程度取决于缺陷的程度和通过缺陷的血流的大小。血流通常由左向右,因为全身血管阻力大于肺阻力。本报告描述了在兽医院治疗的一只4岁雄性贵宾犬的超声心动图结果,该贵宾犬有运动不耐受、发绀和晕厥发作的历史。超声心动图显示,膜周IVSD诊断为房室和右心室扩张,主动脉下区域室间隔间断约5mm。在多普勒评价中,证实了反向湍流,表征从右到左分流(Eisenmenger综合征)。尽管保留了收缩功能,但观察到异常的松弛。多普勒超声心动图是诊断这种先天性心脏病的一种基本的补充成像检查,因为它在成人患者中不常被怀疑。多普勒超声心动图使我们能够识别缺陷,确定其大小和扩展范围,确定血流方向及其血流动力学后果。
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来源期刊
Acta Veterinaria Brasilica
Acta Veterinaria Brasilica Veterinary-Veterinary (all)
CiteScore
0.40
自引率
0.00%
发文量
48
审稿时长
12 weeks
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