Department of Ultrasound, The Third Affiliated Hospital of Nanchang University, Nanchang First Hospital, Jiangxi Province, Nanchang, China.
Department of pediatrics, The First Affiliated Hospital of Nanchang University, Jiangxi Province, Nanchang, China.
Echocardiography. 2022 Oct;39(10):1324-1327. doi: 10.1111/echo.15457. Epub 2022 Oct 2.
To review the imaging characteristics and evaluate the diagnostic value of echocardiography for fetal congenitally unguarded tricuspid valve orifice (CUTVO).
Doppler echocardiography was performed and the images were compared with operative and necropsy findings in ten fetuses with CUTVO. The aim of the study was to summarize the characteristics of fetal echocardiography and analyze the causes of missed diagnoses and misdiagnoses.
There were six cases with complete absence (60%) and four cases with partial absence of the tricuspid leaflet (40%). Among all cases, six cases were consistent with the ultrasonic diagnosis. CUTVO ultrasonographic characteristics consist of the atrioventricular connection with normal arteries and the tricuspid valve device partially or completely absent. The annulus of the tricuspid valve can be described as "empty" in the apical four-chamber view, Doppler evaluation shows to-and-fro flow across the tricuspid orifice with low velocity and two-way spectrum.
Fetal echocardiography can accurately diagnose CUTVO, but missed diagnosis and misdiagnosis should be reduced.
回顾超声心动图对胎儿先天性无瓣三尖瓣孔（CUTVO）的影像学特征及诊断价值。
对 10 例 CUTVO 胎儿进行多普勒超声心动图检查，并将图像与手术和尸检结果进行比较。本研究旨在总结胎儿超声心动图的特点，并分析漏诊和误诊的原因。
完全缺如 6 例（60%），部分缺如 4 例（40%）。所有病例中，6 例与超声诊断一致。CUTVO 的超声特征为房室连接正常，而三尖瓣装置部分或完全缺失。心尖四腔心切面可见三尖瓣环“空”征，多普勒评估显示三尖瓣口双向低速血流。
胎儿超声心动图可准确诊断 CUTVO，但应减少漏诊和误诊。
