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Long-Term Outcomes With Expanded Polytetrafluoroethylene Valved Conduits in Pediatric Patients.

Yoshio Ootaki1, Ashok Muralidaran1, Inder Mehta2

  • 1Oregon Health & Science University, Portland, Oregon.

Annals of Thoracic Surgery Short Reports
|January 10, 2025
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Summary

This study shows expanded polytetrafluoroethylene valved conduits (ePTFE VC) offer excellent long-term outcomes for pulmonary valve replacement (PVR). These conduits provide a landing zone for transcatheter PVR when needed, with 90% freedom from it at 10 years.

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Area of Science:

  • Cardiovascular Surgery
  • Biomaterials Science
  • Pediatric Cardiology

Background:

  • Expanded polytetrafluoroethylene (ePTFE) valved conduits (VC) are utilized for pulmonary valve replacement (PVR).
  • Long-term outcomes of a specific trileaflet ePTFE VC design were investigated.

Purpose of the Study:

  • To review the long-term clinical performance and outcomes of a trileaflet ePTFE valved conduit used for pulmonary valve replacement.

Main Methods:

  • A multicenter study involving patients who received ePTFE VCs between 2012 and 2023.
  • Valve function was assessed via echocardiography during surgery and follow-up visits.
  • Clinical follow-up data was collected for an average of 3.6 years.

Main Results:

  • Fifty-five patients (age 6 months to 20 years) received ePTFE VCs (16-28 mm diameter).
  • No hospital deaths or endocarditis occurred; 90% freedom from transcatheter PVR (TPVR) at 10 years.
  • No explantation or surgical replacement of the ePTFE VCs was required.

Conclusions:

  • The ePTFE VC demonstrates excellent long-term performance compared to historical PVR options.
  • It serves as an accessible landing zone for subsequent TPVR if necessary.
  • The technique is reproducible and valuable for pediatric pulmonary valve replacement.