Recent advances in perioperative blood management

Area of Science:

• Transfusion Medicine
• Hematology
• Critical Care Medicine

Background:

• Blood transfusions are common but associated with significant adverse effects.
• Evolving understanding of transfusion physiology impacts patient care in surgery, trauma, and critical illness.
• Historical practices often favored liberal transfusion, but current evidence prompts re-evaluation.

Purpose of the Study:

• To review the current understanding of blood transfusion efficacy and risks.
• To evaluate the evidence supporting restrictive versus liberal transfusion strategies.
• To emphasize the importance of guideline-based transfusion policies.

Main Methods:

• Review of current literature and guidelines on blood transfusion.
• Analysis of the physiological rationale and clinical outcomes associated with red blood cell transfusion.
• Discussion of evidence regarding hemoglobin thresholds for transfusion.

Main Results:

• Restrictive red blood cell transfusion strategies are recommended for stable patients with non-hemorrhagic anemia.
• Evidence suggests limited benefit of transfusion beyond a hemoglobin threshold of 7 g/dL.
• Liberal transfusion policies may be associated with increased complications.

Conclusions:

• Patient benefit must outweigh transfusion risks.
• Adoption of guideline-based transfusion policies for all blood products is crucial.
• Clinical judgment should complement evidence-based guidelines in transfusion decisions.