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Related Experiment Video

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Pulmonary artery augmentation using decellularized equine pericardium (Matrix Patch™): initial single-centre

Peter Murin1, Viktoria H M Weixler1, Kira Kuschnerus1

  • 1Department of Congenital Heart Surgery-Pediatric Heart Surgery, German Heart Center Berlin, Berlin, Germany.

European Journal of Cardio-Thoracic Surgery : Official Journal of the European Association for Cardio-Thoracic Surgery
|July 16, 2021
PubMed
Summary
This summary is machine-generated.

Matrix Patch, a cell-free equine pericardium, showed promising initial results for pulmonary artery augmentation in children, with no deaths and good freedom from reoperation. Long-term durability requires further study.

Keywords:
Congenital heart diseaseDecellularized equine pericardiumExtracellular matrixMatrix Patch™Pulmonary arteriesTissue engineering

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Area of Science:

  • Cardiovascular Surgery
  • Pediatric Cardiology
  • Biomaterials Science

Background:

  • Congenital heart defects often necessitate pulmonary artery reconstruction.
  • Augmentation of branch pulmonary arteries (PAs) is crucial for improving outcomes in pediatric patients.
  • Cell-free equine-derived pericardium patches offer a potential alternative to existing materials.

Purpose of the Study:

  • To evaluate the initial clinical experience with Matrix Patch for branch pulmonary artery augmentation in pediatric patients.
  • To assess the feasibility, safety, and early outcomes of using Matrix Patch in complex cardiac surgeries.
  • To analyze explanted patches for signs of recellularization, inflammation, and calcification.

Main Methods:

  • A retrospective analysis of 96 pediatric patients (median age 3.2 years) who underwent branch PA augmentation using Matrix Patch between 2016 and 2019.
  • Implantation in 147 locations, predominantly in redo surgeries (89.6%).
  • Primary endpoints included death or patch-related reoperation/stent implantation; explanted patches underwent histological analysis.

Main Results:

  • Eighty-one patients were followed for a median of 20 months. No patch-related deaths occurred.
  • Survival at last follow-up was 88%. Probability of freedom from reoperation/stent implantation at 12 and 24 months was 85.8% and 78.7%, respectively.
  • Explanted patches showed superficial proliferation and macrophage activity, but no calcification.

Conclusions:

  • Matrix Patch demonstrates comparable early results to other xenogeneic materials for branch PA augmentation in children.
  • The observed tissue response suggests potential for integration, but long-term durability needs further investigation.
  • Continued follow-up is essential to confirm the long-term efficacy and safety of Matrix Patch in pediatric cardiovascular surgery.