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Related Concept Videos

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Mitral Stenosis III: Medical Management

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Related Experiment Video

Updated: Jun 24, 2026

Transcatheter Pulmonary Valve Replacement from Autologous Pericardium with a Self-Expandable Nitinol Stent in an Adult Sheep Model
05:31

Transcatheter Pulmonary Valve Replacement from Autologous Pericardium with a Self-Expandable Nitinol Stent in an Adult Sheep Model

Published on: June 8, 2022

Percutaneous pulmonary valve replacement.

Alessandra Frigiola1, Johannes Nordmeyer, Philipp Bonhoeffer

  • 1Great Ormond Street Hospital for Children, London, UK. alessandra72@iol.it

Coronary Artery Disease
|March 27, 2009
PubMed
Summary
This summary is machine-generated.

Percutaneous pulmonary valve implantation offers a less invasive option for patients with degenerated right ventricle-to-pulmonary artery conduits. This procedure improves exercise capacity and reduces key indicators of heart strain, with low complication rates.

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Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Cardiac Surgery

Background:

  • Surgically placed right ventricle-to-pulmonary artery (RV-PA) conduits have a limited lifespan.
  • Repeat open-heart surgery is often required for conduit degeneration, posing significant risks.
  • Percutaneous pulmonary valve implantation (PPVI) has emerged as a less invasive alternative.

Purpose of the Study:

  • To evaluate the efficacy and safety of PPVI in patients with degenerated RV-PA conduits.
  • To compare PPVI outcomes with traditional surgical reinterventions.
  • To identify optimal patient selection criteria for PPVI.

Main Methods:

  • Retrospective analysis of patients undergoing PPVI for degenerated RV-PA conduits.
  • Assessment of procedural success, morbidity, and mortality rates.
  • Pre- and post-procedure evaluation of clinical status, exercise capacity, and hemodynamic parameters (RV-PA gradient, regurgitant fraction, RV volumes).

Main Results:

  • PPVI demonstrated low morbidity and mortality, with outcomes improving with increased operator experience.
  • Patients reported subjective improvements in quality of life.
  • Objective measures showed increased exercise capacity and reduced RV-PA gradient, regurgitant fraction, and RV volumes post-procedure.
  • Degenerated conduits with calcification provided a suitable anchoring point for the valve.

Conclusions:

  • PPVI is a safe and effective treatment for degenerated RV-PA conduits, offering significant clinical benefits.
  • The procedure is a viable less invasive alternative to repeat open-heart surgery.
  • Future developments may expand the indications for PPVI in pulmonary valve disease.