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室间隔缺损的M型超声心动图特征虽曾报导过,但它们的特异性和敏感性还是受到限制,特别是小的室间隔缺损。本报告中描述了四例膜部室间隔缺损的超声心动图特征。其中三尖瓣扑动给诊断提供了最一致性的超声心动图的线索。
M-mode echocardiographic features of ventricular septal defects have been reported, but their specificity and sensitivity are still limited, especially for small ventricular septal defects. This report describes the echocardiographic features of four cases of ventricular septal defect. Tricuspid flutter provides the most consistent cue for the diagnosis.