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Acute splenic sequestration and hypersplenism in the first five years in homozygous sickle cell disease
Insights
Sickle cell disease screening identifies children at risk for acute splenic sequestration. Recognizing minor episodes can predict severe events and guide preventative splenectomy, reducing morbidity and mortality.
Area of Science:
- Hematology
- Pediatrics
- Genetics
Background:
- Sickle cell disease (SCD) is a genetic blood disorder.
- Early detection through newborn screening is crucial for managing SCD complications.
- Acute splenic sequestration is a significant cause of mortality in young children with SCD.
Purpose of the Study:
- To evaluate the incidence and characteristics of acute splenic sequestration in infants screened for sickle cell disease.
- To determine if minor sequestration episodes predict severe events.
- To assess the role of hypersplenism in SCD complications.
Main Methods:
- Analysis of data from a cord blood screening program for sickle cell disease.
- Longitudinal review of children diagnosed with homozygous sickle cell disease.
- Clinical assessment of splenic sequestration episodes and hypersplenism.
Main Results:
- 216 cases of homozygous sickle cell disease detected in 68,000 deliveries.
- Acute splenic sequestration identified as a major cause of morbidity and mortality in the first five years.
- Minor sequestration episodes were predictive of severe, life-threatening events.
- Sustained hypersplenism was more common in children with sequestration episodes.
Conclusions:
- The classification of acute splenic sequestration should be expanded to include minor episodes.
- Preventative splenectomy should be considered for patients with recurrent sequestration and hypersplenism.
- Early identification and management of sequestration episodes can improve outcomes for children with sickle cell disease.
Abstract:
A cord blood screening programme initiated in June 1973 had screened 68 000 normal deliveries by February 1979 with the detection of 216 cases of homozygous sickle cell disease. Regular review of these children in the Medical Research Council paediatric clinic has identified acute splenic sequestration as a major cause of morbidity and mortality in the first 5 years of life. In addition to classical episodes characterised by peripheral circulatory failure, minor episodes of increasing anaemia associated with an enlarging spleen and an active marrow were also common. These minor episodes appeared to have predictive value in children who later developed severe life-threatening episodes of acute splenic sequestration. Sequestration. Sustained hypersplenism was also appreciably more common in children developing minor or major episodes of acute splenic sequestration compared with those without such a history. It is proposed that the classification of acute splenic sequestration be expanded to include these minor episodes, and that consideration be given to prevention of recurrences by splenectomy particularly in patients who also develop sustained hypersplenism.