Surgical treatment of subaortic stenosis (Report of 70 cases)
- VernacularTitle:70例主动脉瓣下狭窄的外科治疗
- Author:
Hui JIANG
;
Zhengwei WANG
;
Renfu ZHANG
- Publication Type:Journal Article
- Keywords:
Aortic subvalvular stenosis Cardiac surgical procedures
- From:
Chinese Journal of Thoracic and Cardiovascular Surgery
1995;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To summarize the experience of surgical treatment of subaortic stenosis. Methods: 70 patients with subaortic stenosis were treated surgically. The diagnosis was made by echocardiography, left ventricular catheterization and angiography. There were 46 males and 24 females. The mean age at operation was 11.8 years (range 3 to 46 years). 64 patients had discrete stenosis and 6 had tunnel stenosis. For the discrete stenosis cases, simply resection of stenosis membrane was done in 58 cases and plus myoctomy in 6 cases. For the tunnel stenosis cases, left ventricular muscle was resected to relieve obstruction. In 59 patients combined cardiovascular malformation were corrected at the same time. Results: There were two postoperative deaths. Mitral valve injury occurred in 1 patient. The mean systolic gradient of left ventricle to aorta was 7.5 mmHg with a range of 0-30 mmHg in 38 cases after operation. The 1-, 3-, 5-, 10-, 20-year follow-up rate was 83%, 77%, 68%, 45%, and 9%,respectively. All patients were asymptomatic postoperatively. No reoperation was required. Conclusion: Once subaortic stenosis was diagnosed, operation should be done. Preoperative echocardiography and routine exploration of the root of aorta should be done during operation are in diagnosing. The key point of the operation that left ventricular outflow tract should be thoroughly dredged, no injury should be made to the mitral valve, aortic valve and conduction bundle.
