Perfusion machines for liver transplantation: technology and multifunctionality.

Area of Science:

• Transplantation Science
• Biomedical Engineering
• Organ Preservation Technology

Background:

• Static cold storage is the traditional method for preserving organs for transplantation.
• Machine perfusion presents a promising alternative, with its reliability extensively studied in experimental models.
• Despite advancements, a consensus on optimal machine design and functionality for liver preservation remains elusive.

Purpose of the Study:

• To analyze existing machine perfusion devices for liver preservation.
• To identify essential technical and functional features for multifunctional and adaptable preservation machines.
• To address the preservation needs of diverse liver types, including marginal grafts.

Main Methods:

• Review and analysis of described machine perfusion circuits and devices.
• Evaluation of parameters such as temperature, oxygenation, flow, and pressure in experimental models.
• Identification of key features for machine adaptability and multifunctionality.

Main Results:

• Machine perfusion is recognized as a valid organ preservation method.
• Existing devices vary, highlighting a lack of standardization in machine development.
• Essential features for adaptability and multifunctionality are identified for diverse liver types.

Conclusions:

• Standardization of machine perfusion device development is crucial for liver transplantation.
• A uniform approach to machine use is necessary to establish clinical protocols.
• Optimizing machine perfusion technology can enhance the preservation of allografts, including marginal livers.