Surgical correction of coarctation of the main pulmonary artery.

ADVANCES in heart surgery. catheterization, and angiography have called attention to constrictions of the pulmonary arterv and its branehes. Recenitlv SchumLacker and liurie' described a calcified stenotic zonie at the bifureation of the pulmlolnary arterv in a 14-vear-old girl. This was dilated with a Kelly clamiip. No postoperative physiologie studies were reported. Soiidergaard2 reported 3 cases with similar stenosis at the bifureation. Two of these were associated with the tetralogy of Fallot, while the third had an atrial septal defect ancd valvular pulmuonic stenosis. Although Sondergaard discovered the vascular obstructions at operation. n-tone was corrected. Several unoperated cases lhave been reported. Arvidsson ancd associates3 demonstrated by angiography what appeared to be multiple congenital sten-oses of the peripheral pulmonary arteries in 4 patients. Coles and Walker4 reported a case of bilateral constrietion of the maini branlches of the pulmuoniary artery, which was diagnosed bv catheterization and angiography. Eldridge, Selzer, and Hultgren'reported 5 patients Awith stenosis of a branlch of the pullmonaary artery demon strated by catheterization. We have recently encou-iitered 2 cases of stenoosis of the maini pulmonio+ary after-. Although Williams, Lange, and Hecht6 point out that sten-osis is probablv not unusual, our firsi