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Nocturnal oxygen saturation and painful sickle cell crises in children
Darren R Hargrave1, Angie Wade, Jane P M Evans
1Department of Paediatric Epidemiology and Biostatistics, Neurosciences Unit, Institute of Child Health, London, United Kingdom. darren.hargrave@rmh.nthames.nhs.uk
Insights
Low nocturnal oxygen saturation in children with sickle cell disease (SCD) is linked to more frequent painful crises. Addressing hypoxemia may reduce SCD complications.
Area of Science:
- Pediatric Hematology
- Sleep Medicine
- Pulmonology
Background:
- The exact causes of acute painful crises in pediatric sickle cell disease (SCD) remain unclear.
- Potential risk factors include SCD type, anemia severity, fetal hemoglobin levels, and hypoxemia due to upper airway obstruction.
Purpose of the Study:
- To investigate the relationship between clinical, laboratory, and sleep study data and the frequency of painful crises in children with SCD.
Main Methods:
- A cohort study involving 95 pediatric patients with SCD.
- Utilized univariate and multiple regression modeling to analyze data.
Main Results:
- Low nocturnal oxygen saturation was significantly associated with a higher frequency of painful crises in children with SCD (P <.0001).
Conclusions:
- Nocturnal hypoxemia is a key factor associated with painful crises in pediatric SCD.
- Screening for and treating hypoxemia could potentially decrease the frequency of painful crises and other SCD complications.
Abstract:
The pathogenesis of acute painful crisis in children with sickle cell disease is poorly understood; suggested risk factors include sickle cell type, severity of anemia, fetal hemoglobin concentration, and hypoxemia from upper airway obstruction. In a cohort study of 95 patients the relationship between clinical, laboratory, and sleep study data and frequency of painful crisis was investigated. Both univariate and multiple regression modeling showed that low nocturnal oxygen saturation was highly significantly associated with a higher rate of painful crisis in childhood (P <.0001). Screening and treatment for hypoxemia may reduce the frequency of this and other complications of the disease.