患者男,17岁。1年前院外体检怀疑三尖瓣狭窄。患者自诉活动后劳累、心悸、气促。查体:血压135/87mm Hg,胸骨左缘第3、4肋间闻及收缩期杂音,无腹胀、双下肢水肿。经胸二维超声心动图示:右心增大(右室27mm,右房50mm)(图1);三尖瓣附着位置正常,形态异常,仅见前瓣结构,未见隔瓣及后瓣结构;前瓣冗长,活动度较大,瓣根部增 Patient male, 17 years old. A year ago, out-of-hospital physical examination suspected tricuspid stenosis. Patients after the prosecution activities tired, palpitations, shortness of breath. Physical examination: blood pressure 135 / 87mmHg, sternal left and right 3,4rd intercostal smell and systolic murmur, no bloating, lower extremity edema. Transthoracic two-dimensional echocardiography: right heart increased (right ventricular 27mm, right atrium 50mm) (Figure 1); tricuspid attachment position normal, abnormal morphology, only the anterior valve structure, no septal flap and flap structure The length of the anterior flap was long and the activity of the flap was increased