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Updated: Apr 22, 2026

Ex Situ Normothermic Machine Perfusion of Donor Livers
Published on: May 26, 2015
[Care of the potential organ donor]
Tatiana H Rech1, Edison Moraes Rodrigues Filho1
1Unidade de Terapia Intensiva, Hospital Dom Vicente Scherer, Porto Alegre, RS, Brasil.
Background And Objectives:
Organ transplantation has long been considered the treatment of choice for many end-stage organ diseases. As soon as transplantation turned to be a viable therapy, organ shortage became the major limitation for the procedures. Nowadays, there is an increasing imbalance between organ supply and demand. Apparently, the most promising way to increase organ supply is optimizing the care for the brain death organ donor. The objective of this manuscript was to review the pathophysiological aspects and therapeutic strategies for the optimized care of the potential organ donor.
Contents:
Brain death causes a massive catecholamine release, inducing a variety of deleterious effects that can threat organ perfusion. Studies have documented a sudden decrease in cortisol, insulin, thyroid and pituitary hormones. In this scenario of hemodynamic and metabolic instability, a special attention to the multiple organ donor support is required.
Conclusions:
An extensive knowledge of the complex brain death pathophysiology is extremely important for the implementation of rational aggressive management protocols of the potential organ donor, aiming to increase the number of harvested organs and the number of organs harvested per donor.
Insights
Optimizing care for brain dead organ donors is crucial to address organ shortages. Understanding brain death pathophysiology aids in developing management protocols to increase organ yield.
Area of Science:
- Nephrology
- Transplantation Medicine
- Critical Care
Context:
- Organ transplantation is a vital treatment for end-stage organ diseases.
- A significant organ shortage exists, creating an imbalance between supply and demand.
- Optimizing care for brain dead organ donors is a key strategy to increase organ availability.
Purpose:
- To review the pathophysiological changes associated with brain death.
- To outline therapeutic strategies for the optimized management of potential organ donors.
- To enhance organ procurement and the number of organs harvested per donor.
Summary:
- Brain death triggers a massive catecholamine release, leading to hemodynamic and metabolic instability.
- This instability can compromise organ perfusion and function.
- Hormonal changes, including decreased cortisol and pituitary hormones, are also observed.
Impact:
- Implementing rational, aggressive management protocols based on a thorough understanding of brain death pathophysiology is essential.
- This approach aims to maximize the number of viable organs for transplantation.
- Improved donor management can significantly alleviate the organ shortage crisis.
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