Partial and Transient Relief of Conduit Obstruction by Low-Pressure Balloon Dilation in Patients With Congenital Heart Disease

Cathet Cardiovasc Diagn. 1995 Jan;34(1):35-40. doi: 10.1002/ccd.1810340309.


Seven patients underwent attempted low pressure balloon dilation of stenotic conduits or homografts from right ventricle to pulmonary artery (n = 5), in the aortic valve position (n = 1), or from right atrium to left pulmonary artery (n = 1). In the right ventricle to pulmonary artery group, mean gradient reduction was only 17%. At follow-up, two patients underwent surgical conduit replacement, one had a stent implanted at cardiac catheterization, the other two are awaiting surgical intervention. The patient with a homograft in the aortic valve position had a good initial result but restenosed within 1 year and underwent a pulmonary autograft operation. The patient with the Fontan homograft stenosis had transient obstruction relief but subsequently required stent implantation. Low-pressure balloon dilation of conduits or homografts is only partially and transiently successful. Whether stent implantation will offer better long-term results remains to be determined.

MeSH terms

  • Adolescent
  • Aortic Valve
  • Bioprosthesis*
  • Catheterization / adverse effects
  • Catheterization / instrumentation
  • Catheterization / methods*
  • Child
  • Child, Preschool
  • Coronary Angiography
  • Female
  • Graft Occlusion, Vascular / diagnostic imaging
  • Graft Occlusion, Vascular / therapy*
  • Heart Atria / pathology
  • Heart Atria / surgery
  • Heart Defects, Congenital / pathology
  • Heart Defects, Congenital / surgery*
  • Heart Valve Prosthesis / adverse effects*
  • Humans
  • Male
  • Pulmonary Artery / pathology
  • Pulmonary Artery / surgery
  • Treatment Outcome