Effect of ventriculoseptal myectomy on surgical management of subaortic stenosis

ABSTRACT

In this study 29 cases of subaortic stenosis were analyzed to evaluate the value of septal myectomy in surgical management of subaortic stenosis. They were classified into 2 groups Group I included 16 cases without myectomy and group II 13 cases for whom myectomy [in 10 cases] or myotomy [in 3 cases] was performed with excision of subaortic membrane of fibromuscular ridge. Immediate and late postoperative pressure gradient measurements across LVOT, showed smaller gradient in group II. There was more regression of the gradient during follow up visits in patients, for whom septal myectomy or myotomy was performed. Septal myectomy is recommended in cases of subaortic stenosis. The amount of resection is adjusted according to the degree of septal hypertrophy