Red blood cell transfusion in clinical practice.

Area of Science:

• Hematology
• Transfusion Medicine
• Physiology

Background:

• Red blood cell (RBC) transfusion is a critical treatment for inadequate tissue oxygenation.
• Current transfusion triggers rely heavily on clinical judgment due to a lack of sensitive laboratory assays.
• The impact of the RBC storage lesion on transfusion efficacy is not well understood.

Purpose of the Study:

• To review the current understanding and challenges in red blood cell transfusion.
• To highlight the need for improved methods to determine transfusion necessity.
• To discuss the implications of RBC storage lesion and safety concerns.

Main Methods:

• Literature review of RBC transfusion practices, storage lesion, and safety.
• Analysis of current diagnostic limitations for tissue hypoxia.
• Examination of pathogen inactivation technologies and transfusion complications.

Main Results:

• RBC transfusion is essential but triggers are controversial, often based on clinical experience.
• Existing laboratory assays lack sensitivity, reproducibility, and ease of use for detecting regional tissue hypoxia.
• The RBC storage lesion's clinical significance remains poorly understood.
• Infectious risks persist, particularly in developing nations, with pathogen inactivation techniques still in development.
• Despite complications, RBC transfusion offers a favorable therapeutic index.

Conclusions:

• There is a critical need for objective laboratory assays to guide RBC transfusion decisions.
• Further research into the RBC storage lesion is necessary to optimize transfusion outcomes.
• Enhancing blood safety through pathogen inactivation is crucial, especially in resource-limited settings.