Percutaneous balloon pulmonic valvuloplasty following treated endocarditis in a patient with congenital pulmonary valve stenosis. A 36-year-old woman with congenital pulmonary valve stenosis developed the rare complication of endocarditis of the valve. After successful sterilization of the valve, the patient underwent percutaneous balloon pulmonic valvuloplasty at a later date. The procedure successfully reduced the peak pulmonary valve gradient from 94 to 45 mm Hg. Percutaneous balloon valvuloplasty is the procedure of choice for treatment of congenital pulmonary valvular stenosis, even in the unusual patient who has healed endocarditis of the pulmonary valve. 