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Pediatric autograft aortic root replacement: a prospective follow-up study
Johanna J M Takkenberg1, Arie Pieter Kappetein, Lex A van Herwerden
1Department of Cardiothoracic Surgery, Erasmus University Medical Center, Rotterdam, The Netherlands. j.j.m.takkenberg@erasmusmc.nl
The Annals of Thoracic Surgery
|October 26, 2005
Summary
Pediatric autograft aortic root replacement offers a durable solution for children needing aortic valve replacement, avoiding lifelong anticoagulation. This procedure shows acceptable survival and reoperation rates in the first decade.
Area of Science:
- Cardiovascular Surgery
- Pediatric Cardiology
- Biomaterials in Medicine
Background:
- Autograft aortic root replacement in children utilizes the patient's own pulmonary valve, offering growth potential and eliminating the need for anticoagulation.
- This double valve procedure's long-term success relies on the durability of both the autograft and the pulmonary valve substitute.
- Clinical experience with pediatric autograft aortic root replacement is presented.
Purpose of the Study:
- To evaluate the clinical outcomes of pediatric patients undergoing autograft aortic root replacement.
- To assess the mortality, reoperation rates, and long-term durability of this procedure in a pediatric population.
Main Methods:
- A prospective study of 47 children (mean age 8 years) undergoing autograft aortic root replacement between 1988 and 2003.
- Data collected included perioperative characteristics and annual follow-up.
- Pulmonary valve replacement was performed using allografts in all cases.
Main Results:
- No hospital deaths occurred. Mean follow-up was 6.1 years.
- Cumulative survival was 95% at 1 year and 93% at 12 years.
- Freedom from valve-related reoperation was 86% at 12 years, with reoperations primarily for allograft degeneration.
Conclusions:
- Pediatric autograft aortic root replacement demonstrates acceptable mortality and reoperation rates within the first postoperative decade.
- This technique enables most children to reach adulthood without requiring anticoagulation or further valve interventions.