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Non-heart-beating donors in thoracic transplantation
1Department of Surgery, University of North Carolina School of Medicine, Chapel Hill, North Carolina 27599-7065, USA. ltxtme@med.unc.edu
Summary
Lungs may be suitable for transplant from non-heart-beating donors (NHBDs) due to unique cellular respiration. This review explores experimental data and clinical experience with NHBD lung transplants.
Area of Science:
- Organ transplantation
- Surgical innovation
- Donor organ viability
Background:
- Lung transplantation faces donor scarcity, leading to waiting list deaths and strict recipient criteria.
- Lungs possess unique cellular characteristics potentially allowing retrieval after circulatory arrest, unlike other organs.
- This contrasts with the critical need for immediate perfusion in organs like the heart.
Purpose of the Study:
- To review experimental data on the viability of lungs from non-heart-beating donors (NHBDs) for transplantation.
- To examine the existing clinical experience with NHBDs as lung donors.
- To discuss the implications of NHBD utilization for lung and heart transplantation.
Main Methods:
- Literature review of experimental studies on lung preservation and NHBD retrieval.
- Analysis of published clinical case reports and series involving NHBD lung donors.
- Discussion of physiological principles underlying lung tolerance to ischemia.
Main Results:
- Experimental data suggests lung parenchymal cells can survive without immediate perfusion.
- Limited but existing clinical experience demonstrates the feasibility of NHBD lung transplantation.
- Reperfusion injury in NHBD lungs is a key consideration requiring further research.
Conclusions:
- Lungs retrieved from NHBDs represent a potential solution to donor organ scarcity.
- Further research and clinical trials are warranted to optimize NHBD lung procurement and transplantation.
- The use of NHBDs could significantly expand the donor pool for lung transplantation.