Transcatheter treatment of pulmonary stenosis and coarctation of the aorta: experience with percutaneous balloon dilatation.

32 children, including 22 with pulmonary valve stenosis (age range 4 months-20 years) and 10 with coarctation of the aorta (age range 1 month-11 years).

Percutaneous balloon dilatation using 5-9 French catheters with 5-20 mm balloons, inflated for 8-15 seconds at 2-5 atm (pulmonary stenosis) or 4-8 atm (coarctation), with at least four dilatations performed per case.

Change in peak systolic pressure gradient across the pulmonary valve (for pulmonary stenosis) and peak systolic pressure difference across the coarctation (for aortic coarctation).surrogate