4.1 Article

Incidence of Persistent Left Superior Vena Cava in the Normal Population and in Patients with Congenital Heart Diseases Detected Using Echocardiography

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PEDIATRIC CARDIOLOGY
卷 39, 期 3, 页码 484-490

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SPRINGER
DOI: 10.1007/s00246-017-1778-3

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Persistent left superior vena cava; Incidence in normal population; Incidence in congenital heart disease; Coarctation of the aorta; Trisomy 21

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Reports on the incidence of persistent left superior vena cava (PLSVC) in the normal population are limited to studies involving pacemaker implantation candidates and cadavers. The incidence in patients with congenital heart diseases (CHDs) is estimated to be higher than that in the normal population; however, the details are unclear. To investigate the incidence of PLSVC in the normal population and in patients with CHDs, subjects were examined prospectively using echocardiography. Normal subjects consisted of 2841 successive neonates without intra-cardiac or congenital anomalies born in Gifu Prefectural General Medical Center. Additionally, 1920 patients with CHDs were evaluated. The incidence of PLSVC in normal neonates was 0.21% (95% confidence interval 0.042-0.38%). A high incidence (more than 7.0 times the incidence in normal subjects) was observed in all CHD patients. The high incidence group included coarctation of the aorta (CoA) (23.7%) and double outlet right ventricle (DORV) patients (24.6%). The second group consisted of CHD patients with ventricular septal defect (VSD), with an incidence ranging from 5.1 to 6.1%. The low incidence group comprised patients with other CHDs, with an incidence between 1.5 and 3.1%. The incidence of PLSVC in trisomy 21 and atrial septal defect patients was significantly higher than that in normal neonates. The incidence of PLSVC in the normal population and in patients with CHDs was systematically evaluated for the first time. The incidence in CHD patients appeared to be positively influenced by the type of CHD, particularly by DORV, CoA, and VSD.

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