主动脉瓣下狭窄的外科治疗2例

目的：总结2例主动脉瓣下狭窄的手术治疗经验。方法：均行狭窄左室肌肉切除左室流出道疏通术。合并畸形1例，同期行矫正手术。结果：无手术死亡，未发生二尖瓣损伤。术后2例左室主动脉收缩压力差分别为10、15mmHg术后随访3年症状均消失。结论：本病一旦确诊，应尽快手术；术前超声心动图检查及术中常规主动脉根部探查，对防止合并畸形的漏诊尤为重要；手术关键是彻底疏通左室流出道；术中应防止二尖瓣、主动脉瓣及传导束损伤.

Surgical treatment of subaortic stenosis - a report of two cases

Objective: To summarize the experience of surgical treatment for 2 patients with subaotic stenosis. Methods: Two male patients (one being 6 and the other 8 years old) with subaortic stenosis were treated surgically. Echocardiography and operation confirmed the diagnosis that they had tunnel stenosis, which was rectified with surgical therapy to relieve obstruction. The patient ombined with ventricular septal defect was given orthopedic therapy. Results: Neither postoperative deaths nor damage to the mitral (?)ve occurred. For the 2 cases, the mean systolic pressure gradients of the left ventricular and aorta were 10 mmHg and 15 mmHg respectively. Conclusion: Once subaortic stenosis was diagnosed, surgical operation should be administered at an early date Prcopcra-tive echocardiography and routine exploration of the root of aorta are particularly important for the prevention of possible missed diagnosis. Key to the success of the operation lies in the fact that the left ventricular outflow tract should be thoroughly cleaned, and no damage should be done to the mitral valve, the aortic valve and the conduction bundle.