Early risk factors for acute chest syndrome in sickle cell anemia: A pediatric study

Area of Science:

• Hematology
• Pediatric Emergency Medicine
• Sickle Cell Disease Research

Background:

• Acute chest syndrome (ACS) is a severe, life-threatening complication of sickle cell anemia (SCA).
• ACS often develops during vaso-occlusive crises (VOCs) in vulnerable SCA patients.
• Early identification of risk factors for ACS progression is critical for timely intervention.

Purpose of the Study:

• To identify early risk factors for the progression of severe vaso-occlusive crises (VOCs) to acute chest syndrome (ACS) in pediatric patients with sickle cell anemia.
• To analyze clinical and laboratory data from patients presenting to the Emergency Department with severe VOCs.
• To differentiate risk factors associated with ACS development versus uncomplicated VOCs.

Main Methods:

• Retrospective study (2016-2022) comparing severe VOC encounters that progressed to ACS with those that did not.
• Inclusion criteria: exclusively SS and Sβ0 sickle cell disease genotypes.
• Data collected: medical history, clinical presentation, laboratory results, and pain characteristics.

Main Results:

• Out of 280 severe VOC encounters, 40 progressed to ACS.
• ACS was significantly correlated with nighttime VOC occurrence, diffuse (multifocal) pain, and elevated C-Reactive protein (CRP).
• Multivariable analysis identified diffuse pain, nighttime pain, and elevated CRP as independent predictors of ACS.

Conclusions:

• Diffuse pain, nighttime pain occurrence, and elevated C-Reactive protein are significant early risk factors for ACS in pediatric SCA patients.
• These factors should be closely monitored during initial Emergency Department assessments.
• Prompt evaluation and management of acute pain are crucial for hospitalized SCA patients to mitigate ACS risk.