Sickle cell disease: when and how to transfuse.

Area of Science:

• Hematology
• Transfusion Medicine

Background:

• Blood transfusion is a key therapy for sickle cell disease (SCD).
• It aims to enhance oxygen transport and mitigate vaso-occlusive complications.
• Current evidence for transfusion use in SCD is limited outside specific areas.

Purpose of the Study:

• To review the current evidence for blood transfusion in managing SCD.
• To highlight the efficacy and limitations of different transfusion methods.
• To identify gaps in knowledge regarding transfusion protocols in SCD.

Main Methods:

• Review of observational data and randomized controlled trials.
• Analysis of transfusion efficacy in acute and chronic SCD complications.
• Discussion of transfusion's role in stroke prevention, pregnancy, and perioperative settings.

Main Results:

• Transfusion, including simple and automated exchange, effectively reduces acute and chronic SCD complications.
• Strong evidence supports transfusion for stroke prevention (primary and secondary).
• Limited data exists for long-term transfusion in non-neurologic chronic complications, necessitating careful risk-benefit discussion.

Conclusions:

• Blood transfusion is crucial for SCD management, particularly for stroke prevention.
• Further randomized trials are required to establish clear guidelines for transfusion timing and methods in SCD.
• Informed patient/family discussion is vital before initiating long-term transfusion programs.