Abstract
Pulmonary valve stenosis is characterized by high attachment of the commissures to the pulmonary arterial wall. Thus, the tethering of the fused leaflets should be separated from their anomalous insertion, with increased leaflet mobilization in each commissure, and the fusion between the leaflets should be incised until reaching the pulmonary annulus, providing complete opening of the pulmonary valve. This extended opening of pulmonary valve tethering can provide an additional increase of a few millimeters in the diameter of the pulmonary annulus, enough to completely relieve right ventricular outflow tract obstruction without creating pulmonary valve regurgitation.
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