Early US experience with cardiac donation after circulatory death (DCD) using normothermic regional perfusion

Jordan R H Hoffman1, William G McMaster1, Aniket S Rali2

  • 1Department of Cardiac Surgery, Vanderbilt University Medical Center, Nashville, Tennessee.

Insights

Donation after circulatory death (DCD) hearts can increase transplant availability. Thoracic normothermic regional perfusion (TA-NRP) and cold static storage enabled extended cold ischemic times for DCD allografts, facilitating inter-hospital transport.

Area of Science:

  • Cardiovascular Surgery
  • Transplantation Medicine
  • Organ Procurement

Background:

  • Significant shortage of suitable donor hearts for cardiac transplantation.
  • Increasing interest in Donation after Circulatory Death (DCD) as a potential source for cardiac allografts.
  • Initiation of DCD donor heart procurement at the institution.

Purpose of the Study:

  • To evaluate the feasibility and outcomes of cardiac transplantation using DCD allografts.
  • To assess the efficacy of a modified thoracic normothermic regional perfusion (TA-NRP) technique for DCD heart procurement.
  • To determine the safety and viability of DCD allografts transported using cold static storage.

Main Methods:

  • Procurement of cardiac allografts from 15 DCD donors between October 2020 and March 2021.
  • Utilization of a modified extracorporeal membrane oxygenation circuit for thoracic normothermic regional perfusion (TA-NRP).
  • Transport of allografts using cold static storage; data collected and analyzed with IRB approval.

Main Results:

  • Mean donor age 23 ± 7 years; average TA-NRP time 56 ± 8 minutes.
  • Total ischemic time averaged 183 ± 31 minutes; average transport distance 373 ± 203 nautical miles.
  • Post-transplant outcomes included mild (40%) or moderate (20%) primary graft dysfunction (PGD-LV); all recipients had LVEF >55% and were alive past 30 days.

Conclusions:

  • Cardiac DCD offers a viable strategy to expand the donor heart pool for transplantation.
  • The TA-NRP technique combined with cold static storage effectively preserves DCD allografts.
  • Extended cold ischemic times (nearly 3 hours) are achievable, facilitating inter-hospital organ transport.
Abstract

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