1.Discrete Subaortic Stenosis after Repair of Endocardial Cushion Defect.
Kazuo Yamanaka ; Fumitaka Ando ; Fumio Okamoto ; Shigehiro Otani ; Katushi Oda ; Nozomu Sasahashi ; Kou Sogabe ; Tomoki Hanada
Japanese Journal of Cardiovascular Surgery 1996;25(3):181-184
A 6-year-old girl who had undergone repair of an endocardial cushion defect 4.5 years previously, developed discrete subaortic stenosis requiring surgical intervention. On two-dimensional echocardiography a membrane was visualized below the aortic valve. A pressure gradient of 97mmHg was recorded across the left ventricular outflow tract by cardiac catheterization. Operative findings showed a fibrous ring tissue just below the aortic valve, which was peeled away by sharp dissection. Postoperative cardiac catheterization revealed a 25mmHg pressure gradient across the left ventricular outflow tract. Two years later, she continues to do well and the pressure gradient remains unchanged on Doppler echocardiography.
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