[Fixed fibrous subaortic stenosis. Postoperative evaluation]

Fibrous sub-aortic stenosis in 19 patients surgically treated is discussed. The clinical, radiologic, EKG and cardiac catheterization data in the pre and post-operative evaluations are reviewed. There were no surgical deaths in this series. In 14 cases post-operative cardiac catheterization was carried out, in 11 patients a significant decrease in the gradient was found. In 4 cases pharmacological testing was done during catheterization before and after surgery, without significant change in gradients.