Extracorporeal Membrane Oxygenation Patient Outcomes Following Restrictive Blood Transfusion Protocol

Area of Science:

• Critical Care Medicine
• Hematology
• Cardiovascular Surgery

Background:

• Extracorporeal membrane oxygenation (ECMO) requires careful management of blood product utilization.
• Previous transfusion strategies may have led to overuse of blood products.

Purpose of the Study:

• To evaluate the impact of a restrictive blood product transfusion protocol on ECMO patient outcomes.
• To assess changes in blood product utilization and clinical results after protocol implementation.

Main Methods:

• Retrospective review of 507 adult ECMO patients (January 2019-December 2021) at M Health Fairview University of Minnesota Medical Center.
• Implementation of a restrictive protocol (hemoglobin <7, platelets <50, fibrinogen <100) in March 2020.
• Subgroup analysis by ECMO type: venoarterial ECMO, venovenous ECMO, and extracorporeal cardiopulmonary resuscitation (ECPR).

Main Results:

• No significant differences in ECMO survival rates across different ECMO types after protocol implementation.
• Significant decrease in mean hemoglobin levels for venoarterial ECMO and ECPR patients.
• The protocol demonstrated non-inferiority in maintaining patient survival.

Conclusions:

• A restrictive transfusion protocol appears safe and non-inferior for ECMO patient survival.
• Further prospective randomized trials are recommended to confirm the safety and efficacy of restrictive transfusion protocols in ECMO patients.