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Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement
Published on: December 11, 2017
Neoaortic valve function 10 to 18 years after arterial switch operation.
Krzysztof W Michalak1, Jadwiga A Moll, Maciej Moll
1Polish Mother's Memorial Hospital, Research Institute, Łódź, Poland.
World Journal for Pediatric & Congenital Heart Surgery
|June 28, 2013
Summary
Neoaortic valve regurgitation (NeoAR) is common after surgery for transposition of the great arteries (TGA), increasing over time. Risk factors include valve size discrepancy and nonfacing commissures, but severe NeoAR is rare.
Area of Science:
- Cardiovascular Surgery
- Pediatric Cardiology
- Congenital Heart Disease Research
Background:
- Anatomical correction for transposition of the great arteries (TGA) in neonates involves switching the aorta and pulmonary artery.
- The native pulmonary valve functions as the neoaortic valve post-surgery, with its long-term performance being a concern.
Purpose of the Study:
- To assess the occurrence and development of neoaortic valve regurgitation (NeoAR) in patients with TGA.
- To identify potential risk factors associated with NeoAR development over a 10-year follow-up period.
Main Methods:
- Retrospective study of 161 patients with TGA who underwent anatomical correction between 1991 and 2008.
- Patients were followed for 10 years or more, divided into simple TGA and TGA with ventricular septal defect groups.
- Analysis of valve diameter discrepancy and commissure orientation as potential risk factors.
Main Results:
- Significant NeoAR frequency increased from 9% at 1 year to 47% at the longest follow-up.
- No severe NeoAR necessitating reoperation was observed.
- Pulmonary/aortic valve diameter discrepancy and nonfacing commissures were linked to increased NeoAR risk.
Conclusions:
- NeoAR develops and progresses over time after TGA correction, typically detected between 2-6 years post-surgery.
- The degree of NeoAR is usually mild and increases gradually.
- While risk factors exist, hemodynamic repercussions requiring intervention are uncommon.
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