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A High-Fidelity Porcine Model of Orthotopic Heart Transplantation Following Donation after Circulatory Death
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Improving the metrics for donor heart sizing.

Valluvan Jeevanandam1

  • 1Department of Surgery, Section of Cardiac Surgery, The Heart and Vascular Center, University of Chicago Medicine, Chicago, Illinois, USA.

Journal of Cardiac Surgery
|June 19, 2021
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Summary

Predicted heart mass accurately matches donor and recipient sizes for heart transplants. Physiological factors enable safe use of undersized or sex-mismatched organs, improving transplant options.

Keywords:
transplant

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Area of Science:

  • Cardiology
  • Transplantation Medicine
  • Medical Engineering

Background:

  • Accurate donor-recipient size matching is crucial for successful heart transplantation.
  • Current matching protocols may limit organ availability due to strict size criteria.

Purpose of the Study:

  • To evaluate the accuracy of predicted heart mass for donor-recipient sizing in heart transplantation.
  • To determine if physiological considerations can expand the safe use of size-mismatched or sex-mismatched organs.

Main Methods:

  • Utilized predictive modeling for heart mass estimation.
  • Analyzed physiological parameters in donor and recipient pairs.
  • Correlated predicted heart mass with actual organ size and patient outcomes.

Main Results:

  • Predicted heart mass demonstrated strong correlation with donor and recipient sizing requirements.
  • Physiological assessments identified criteria for safe transplantation of undersized organs.
  • Sex-mismatched organ transplantation was found to be feasible under specific physiological conditions.

Conclusions:

  • Predicted heart mass is a reliable tool for donor-recipient matching in heart transplantation.
  • Incorporating physiological factors enhances organ utilization, potentially increasing transplant accessibility.
  • This approach may broaden the donor pool and improve outcomes for patients awaiting heart transplants.