Balloon dilatation of stenotic right ventricle-to-pulmonary artery conduits.
In seven children with obstructed right ventricle-to-pulmonary artery conduits, balloon dilatation (BD) was performed 10-58 months after insertion of the conduit. Average valve gradient was reduced from 69 to 32 mmHg. Obstruction at the conduit-branch pulmonary artery connection became apparent after dilatation of the valve; these distal stenoses also were dilated. It is concluded that the useful lifetime of a right ventricle (RV) to pulmonary artery (PA) conduit may be extended by BD of an obstructed biological valve and/or BD of a stenotic conduit-pulmonary artery anastomosis.
Waldman
J D
JD
Division of Cardiology, Children's Hospital of San Diego, CA 92123.
Lamberti
J J
JJ
Schoen
F J
FJ
George
L
L
Kirkpatrick
S E
SE
Mathewson
J W
JW
Spicer
R L
RL
Grehl
T M
TM
Goodman
A H
AH
D002140:California / Q000453:epidemiology; D002404:Catheterization / Q000379:methods* / Q000592:standards; D002648:Child; D002675:Child, Preschool; D002932:Cineangiography; D005500:Follow-Up Studies; D006330:Heart Defects, Congenital / Q000401:mortality / Q000601:surgery*; D006350:Heart Valve Prosthesis / Q000401:mortality / Q000592:standards*; D006439:Hemodynamics; D006776:Hospitals, Pediatric; D006801:Humans; D007223:Infant; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000628:therapy*; D011475:Prosthesis Failure; D011664:Pulmonary Valve / Q000637:transplantation*; D011666:Pulmonary Valve Stenosis / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000628:therapy*