Balloon angioplasty for branch pulmonary artery stenosis was reported from 27 institutions to the Valvuloplasty and Angioplasty of Congenital Anomalies Registry. One hundred eighty-two procedures were performed in 156 patients ranging in age from 0.2 to 46.2 years (mean 7.7). Short-term angiographic appearance, hemodynamic results and immediate complications were recorded. Vessel dimension at the site of stenosis increased from 4.5 ± 2.0 (mean ± standard deviation) to 6.8 ± 3.0 mm (p < 0.001) with greater increases in vessel dimension at the site of stenosis if the balloon diameter was >3 X the original dimension of the stenosis. There was no significant benefit related to age or prior surgical intervention. The mean peak systolic pressure gradient was reduced from 49 ± 25 to 37 ± 26 mm Hg (p < 0.001) and pressure proximal to the stenosis decreased from 69 ± 25 to 63 ± 24 mm Hg (p < 0.001). Complications occurred in 21 patients and included vessel rupture and death in 2 patients, vessel perforation or rupture with survival in 3, cardiac arrest and death in 1, paradoxical embolism and death in 1 and low output and death in 1. Balloon angioplasty for branch pulmonary artery stenosis increases vessel dimension at the site of stenosis, reduces systolic pressure gradient and to a minor degree, reduces proximal pressure. Long-term outcome and potential complications are as yet uncertain.
Bibliographical noteFunding Information:
From the Department of Pediatrics, The Johns Hopkins University School of Medicine, Baltimore, Maryland, the University of Iowa Hospitals and Clinics, Iowa City, Iowa, University of Minnesota Hospital and Clinic, Minneapolis, Minnesota, Children’s Memorial Hospital, Chicago, Illinois, and Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania. This study was supported in part by a grant from Mcdi-Tech, Watertown, Massachusetts. Manuscript received November 22, 1989, and accepted November 28.
Copyright 2014 Elsevier B.V., All rights reserved.