Gussenhoven E J, Essed C E, Bos E, de Villeneuve V H
Pediatr Cardiol. 1984 Jul-Sep;5(3):209-11. doi: 10.1007/BF02427047.
The M-mode echocardiographic diagnosis of overriding tricuspid valve rests on the ability to demonstrate simultaneously two atrioventricular valves with no intervening septal echo [6, 13]. When scanning inferiorly toward the body of the ventricles, a distinct septal echo at the level of the midportion of the tricuspid valve can be detected. Here we report a case of Ebstein's anomaly, pulmonary stenosis, and ventricular septal defect (VSD), in which the echogram falsely indicated an overriding tricuspid valve.
三尖瓣骑跨的M型超声心动图诊断取决于能否同时显示两个房室瓣且其间无间隔回声[6,13]。当向下扫描至心室体部时，可在三尖瓣中部水平检测到明显的间隔回声。在此我们报告一例埃布斯坦畸形、肺动脉狭窄和室间隔缺损（VSD）病例，其中超声心动图错误地显示了三尖瓣骑跨。
