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首页> 外文期刊>Taiwanese journal of obstetrics and gynecology >Right aortic arch with aberrant left subclavian artery-prenatal diagnosis and evaluation of postnatal outcomes: Report of three cases
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Right aortic arch with aberrant left subclavian artery-prenatal diagnosis and evaluation of postnatal outcomes: Report of three cases

机译：右主动脉弓伴左锁骨下动脉异常-产前诊断和产后预后评估：三例报告

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Objective: To present prenatal diagnosis of a right aortic arch (RAA) with an aberrant left subclavian artery (LSCA) by the three vessels and trachea (3VT) view using routine ultrasound and the newer technique of three-dimensional power Doppler ultrasound (3D-PDU) together with a discussion of the postnatal outcome. Case Reports: Three fetuses having an RAA with an aberrant LSCA were diagnosed prenatally between January 2004 and June 2009. They were all detected at between 20 and 24 weeks by routine ultrasound examination at our hospital. All of them were diagnosed via the 3VT view of the fetal upper mediastinum using ultrasound, which revealed an abnormal U-shaped pattern instead of a normal V-shaped confluence; furthermore, 3D-PDU showed an abnormal RAA and an aberrant LSCA with a vascular ring. These abnormalities were not combined with any other congenital cardiac defects in our three cases. A normal chromosome complement was present without microdeletion of chromosome 22q11.2 in all three cases. Two of the cases were genetically assessed prenatally and the other was assessed postnatally. After delivery, diagnosis was confirmed by echocardiography and three-dimensional 64-slices helical computed tomography angiography. Two of the three fetuses were asymptomatic postnatally, whereas one fetus presented with symptoms of tracheoesophageal compression caused by the vascular ring, but this had improved by 8 months of age. Conclusion: The 3VT view in routine prenatal ultrasound examination is important and essential for the prenatal diagnosis of an RAA with an aberrant LSCA. Moreover, 3D-PDU is able to provide a more clear-cut cardiovascular structure, which helps with the diagnosis.
机译：目的：利用常规超声和较新的三维功率多普勒超声技术（3D- PDU）以及关于产后结局的讨论。病例报告：2004年1月至2009年6月，在产前诊断出3例具有RAA异常LSCA的胎儿。在我院常规超声检查中，它们均在20至24周时被发现。所有这些都通过超声在胎儿上纵隔的3VT视图上诊断出来，显示出异常的U形图案而不是正常的V形融合。此外，3D-PDU表现出RAA异常和带有血管环的LSCA异常。在我们的三例病例中，这些异常并未与任何其他先天性心脏缺陷合并。在所有三种情况下，均存在正常的染色体补体，而染色体22q11.2没有微缺失。其中两例在产前进行了遗传评估，另一例在产后进行了评估。分娩后，通过超声心动图和三维64层螺旋计算机断层扫描血管造影术确诊。三个胎儿中有两个在出生后无症状，而一个胎儿则表现出由血管环引起的气管食管压迫症状，但在8个月大时有所改善。结论：常规产前超声检查中的3VT视图对于LSCA异常的RAA的产前诊断至关重要。此外，3D-PDU能够提供更清晰的心血管结构，有助于诊断。

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