Left ventricular outflow tract obstruction

ABSTRACT

We studied 35 cases with different form of left ventricular outflow tract obstruction operated upon in Cardio- Thoracic Unit at Kasr El Aini Hospital and As Salam International Hospital. Left ventricular outflow obstructions were divided into three major groups valvular aortic stenosis in 15 patients [42.86%], subvalvular aortic stenosis in 16 patient [45.7%] and supravalvular aortic stenosis [11.4%]. In the 1st group aortic stenosis group Aortic valve replacement was done in all patients except one patient [6.67%] where aortic valvotomy was done. Pure subvalvular stenosis alone was present in 14 cases, while valvular aortic stenosis associated with subvalvular membrane was found in 2 cases [12.5%]. In the supra valvular aortic stenosis; patch enlargement alone was done in one case, patch enlargement and excision of an intimal ridge in 2 cases and patch enlargement, excision of an intimal ridge and aortic valve replacement in one case