Sickle cell disease in the ICU

Area of Science:

• Hematology
• Critical Care Medicine
• Vascular Biology

Background:

• Sickle cell disease (SCD) is a genetic blood disorder characterized by abnormal hemoglobin.
• Vaso-occlusive crises (VOCs) are a hallmark of SCD, leading to severe pain and organ damage.
• Adult patients with severe SCD manifestations frequently require intensive care unit (ICU) admission.

Purpose of the Study:

• To review severe acute vaso-occlusive manifestations of sickle cell disease in adult patients admitted to the ICU.
• To highlight key complications and management considerations for severe SCD crises.

Main Methods:

• This is a review article.
• Literature search on severe acute vaso-occlusive manifestations of sickle cell disease in adult ICU patients.
• Synthesis of current evidence on diagnosis, management, and emerging complications.

Main Results:

• Pulmonary vascular dysfunction and acute kidney injury are critical prognostic indicators during VOCs.
• Alloimmunization and delayed hemolytic transfusion reactions are emerging complications requiring careful diagnosis and potentially conservative management.
• The role of blood transfusion in acute SCD complications remains unclear due to a lack of randomized controlled trials.

Conclusions:

• Acute vaso-occlusive episodes in sickle cell disease have an unpredictable course.
• Vigilance and timely ICU or intermediate care unit admission are essential for close monitoring and supportive treatment.
• Early recognition of complications like pulmonary vascular dysfunction, AKI, and transfusion reactions is vital for optimal patient outcomes.