Ultrastructure of crista supraventricularis muscle in patients with congenital heart diseases associated with right ventricular outflow tract obstruction.

59 patients with congenital heart diseases, of whom 54 had obstruction to right ventricular outflow, who underwent operative resection of crista supraventricularis muscle.

Ultrastructural changes in crista supraventricularis muscle and their relationships to anatomic diagnosis, age, peripheral arterial oxygen saturation (PAO2), peak right ventricular systolic pressure gradient, and right ventricular end-diastolic pressure (RVEDP).surrogate