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Related Experiment Videos

Intermediate-term results in pediatric aortic valve replacement.

F M Lupinetti1, B W Duncan, A M Scifres

  • 1Department of Surgery, Children's Hospital and Regional Medical Center and the University of Washington, Seattle 98105, USA. mlupin@chmc.org

The Annals of Thoracic Surgery
|September 4, 1999
PubMed
Summary

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Human tissue valves offer better survival and fewer complications than mechanical valves for pediatric aortic valve replacement (AVR). This suggests human valves are a superior option for children needing AVR, with Marfan syndrome as a potential exception.

Area of Science:

  • Cardiovascular Surgery
  • Pediatric Cardiology
  • Biomaterials Science

Background:

  • Aortic valve replacement (AVR) in pediatric patients increasingly utilizes human tissue valves.
  • The choice between mechanical and human valves involves balancing durability and complication risks.

Purpose of the Study:

  • To compare the intermediate-term outcomes of mechanical versus human valves in pediatric AVR.
  • To evaluate survival rates and freedom from valve-related complications in both groups.

Main Methods:

  • Retrospective review of 100 consecutive pediatric AVRs.
  • Stratification into two groups: 50 mechanical valves and 50 human valves.
  • Analysis of perioperative and late complications, mortality, and reoperations.

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Main Results:

  • The human valve group showed significantly better 4-year actuarial survival (98% vs. 83%) and freedom from complications (88% vs. 61%) compared to the mechanical valve group (p=0.02 and p=0.008, respectively).
  • The mechanical valve group experienced higher rates of late death, endocarditis, and thromboembolic events.
  • Reoperations in the human group were primarily for allograft deterioration in Marfan syndrome patients.

Conclusions:

  • Human valves demonstrate superior intermediate-term outcomes in pediatric AVR compared to mechanical valves.
  • Human valves significantly reduce mortality and valve-related complications in children.
  • Marfan syndrome may be a relative contraindication for human valve use in pediatric AVR.