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Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement
Published on: December 11, 2017
Reoperation after supravalvular aortic stenosis repair
Michiaki Imamura1, Parthak Prodhan, Amy M Dossey
1Division of Pediatric Cardiothoracic Surgery, Arkansas Children's Hospital, Little Rock, Arkansas 72202, USA. imamuramichiaki@uams.edu
The Annals of Thoracic Surgery
|November 25, 2010
Summary
Surgical repair of supravalvular aortic stenosis (SVAS) offers excellent survival rates. However, patients with pulmonary artery stenosis, diffuse SVAS, or early surgery face higher reoperation risks.
Area of Science:
- Cardiovascular Surgery
- Pediatric Cardiology
- Congenital Heart Defects
Background:
- Supravalvular aortic stenosis (SVAS) is a rare congenital heart defect causing left ventricular outflow tract obstruction.
- This study reviews surgical outcomes and identifies risk factors for mortality and reoperation in SVAS patients.
Purpose of the Study:
- To analyze the long-term outcomes of surgical repair for SVAS.
- To identify risk factors associated with death or the need for reoperation after SVAS repair.
Main Methods:
- A retrospective review of 49 patients who underwent SVAS surgery between 1984 and 2009.
- Surgical techniques included single-patch, two-sinus, and three-sinus enlargement.
- Evaluated risk factors: age at surgery, pulmonary artery stenosis, SVAS type (focal/diffuse), valvular aortic stenosis, and surgical era.
Main Results:
- Excellent actuarial survival rates at 5, 10, and 20 years (95%, 95%, 90%).
- High reoperation rates (52% by 20 years) for associated conditions like pulmonary artery stenosis.
- Pulmonary artery stenosis, young age at surgery, and diffuse SVAS were significant predictors of adverse outcomes.
Conclusions:
- Surgical repair of SVAS yields excellent long-term survival.
- Reoperation is common, particularly in patients with coexisting pulmonary artery stenosis, diffuse SVAS, or those operated on at a young age.
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