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RV-PA Conduit Dilation and Stenting

  • Lisa Bergersen
  • Susan Foerster
  • Audrey C. Marshall
  • Jeffery Meadows

Abstract

A number of congenital heart lesions, most frequently those in association with pulmonary atresia, are surgically corrected with the use of right ventricle-to-pulmonary artery (RV-PA) conduits. Conduits may be synthetic, or more commonly valved pulmonary, aortic homografts, or bovine jugular grafts. Over time the conduits become calcified, the valves become dysfunctional, and there is resulting stenosis and/or regurgitation. While many centers address conduit stenosis through surgical replacement, transcatheter conduit dilation and/or stenting can delay the need for surgery by several years (1,2). While it is tempting to view the physiology of right ventricular outflow tract obstruction in this situation as analogous to simple valvar pulmonary stenosis (indeed the obstruction is often at the conduit valve), the underlying anatomy and pathophysiology are substantially different and the technical aspects bear little resemblance.

Keywords

Pulmonary Atresia Ventricular Outflow Tract Obstruction Conduit Valve Aortic Homograft Underlying Anatomy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. 1.
    Powell AJ, Lock JE, Keane JF et al. Prolongation of RV-PA conduit life span by percutaneous stent implantation intermediate results. Circulation 1995; 92:3282–3288.PubMedCrossRefGoogle Scholar
  2. 2.
    Peng L, McElhinney DB, Nugent AW et al. Endovascular stenting of obstructive right ventricle to pulmonary artery conduits: a 15-year experience. Circulation 2006;113:2598–2605.PubMedCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Lisa Bergersen
    • 1
  • Susan Foerster
    • 2
  • Audrey C. Marshall
    • 1
  • Jeffery Meadows
    • 3
  1. 1.Department of CardiologyChildren’s Hospital BostonBostonUSA
  2. 2.Washington University in St. LouisSt. LouisUSA
  3. 3.Division of Pediatric CardiologyUniversity of California at San FranciscoSan FranciscoUSA

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