pulmonary valve replacement itself is an equally uncommon surgical procedure and , in the past , has been performed only during reconstruction of the right ventricular outflow tract , when the pulmonic valve itself had to be utilized as an aortic prosthesis , and in one patient in whom pulmonary regurgitation following valvotomy was not well tolerated .
C0190129
pulmonary valve replacement
C0034086
pulmonic valve