Massive transfusions for critical bleeding: is everything old new again?

Area of Science:

• Critical Care Medicine
• Transfusion Medicine
• Trauma Surgery

Background:

• Massive transfusion protocols (MTPs) are standard for critically bleeding patients.
• Evidence from military trauma suggests improved survival with higher plasma and platelet to red blood cell ratios.
• These ratios approximate the effects of whole blood, historically used before component therapy.

Purpose of the Study:

• To evaluate the evidence base for current transfusion strategies in major hemorrhage.
• To identify gaps in knowledge regarding optimal transfusion support for diverse bleeding contexts.
• To inform the development of evidence-based guidelines for managing major hemorrhage.

Main Methods:

• Review of existing literature and evidence on massive transfusion protocols.
• Analysis of clinical outcomes associated with different blood product ratios.
• Examination of transfusion practices in both trauma and non-trauma settings.

Main Results:

• Higher ratios of plasma and platelets to red blood cells are increasingly adopted in MTPs.
• These ratios are based on findings primarily from military trauma populations.
• High-quality evidence supporting these ratios across all bleeding scenarios is limited.

Conclusions:

• Current transfusion practices in major hemorrhage may not be universally evidence-based.
• Further research is required to establish optimal transfusion strategies for critically bleeding patients.
• More data is needed to refine guidelines and improve clinical outcomes in major hemorrhage management.