[Subaortic stenosis associated with perimembranous ventricular septal defect. Clinical follow-up of 36 patients].

Objective: To study the clinical pattern of subaortic stenosis associated with perimembranous ventricular septal defect.

Methods: From January 1979 to June 2000, 36 children with perimembranous ventricular septal defect and fixed subaortic stenosis were followed-up regarding anatomic characteristics, evolvement, and clinical events.

Results: Age at diagnosis of subaortic stenosis ranged from 6 months to 170 months, and it was less than 1 year in only 2 children.