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Attention deficits in children with sickle cell disease
Nina A Nabors1, Angela K Freymuth
1Eastern Michigan University, USA. Nnabors@online.emich.edu
Insights
Children with sickle cell disease (SCD) show cognitive deficits, but strokes, not SCD itself, appear to cause these attentional issues in children. Further research is needed.
Area of Science:
- Pediatric Neurology
- Hematology
- Neuropsychology
Background:
- Sickle cell disease (SCD) is linked to potential cognitive deficits.
- Previous research suggests cognitive impairment may occur even without overt cerebrovascular events like stroke.
Purpose of the Study:
- To investigate specific attentional deficits in children with sickle cell disease.
- To differentiate the impact of SCD from stroke on cognitive functioning.
Main Methods:
- Compared 12 children with SCD and stroke history, 14 children with SCD without stroke, and 13 healthy siblings.
- Assessed attention, intellectual functioning, academic achievement, and adaptive functioning.
Main Results:
- Children with SCD (with or without stroke) performed significantly worse than controls on visual scanning, coding, reading, arithmetic, and spelling tests.
- Children with SCD without stroke did not significantly differ from healthy controls, suggesting stroke is the primary cause of deficits.
Conclusions:
- Cognitive deficits observed in children with SCD are likely attributable to cerebrovascular events (stroke) rather than the disease itself.
- Findings highlight the impact of stroke on academic performance in children with SCD.
Abstract:
Previous research has suggested that children with sickle cell disease may exhibit cognitive deficits even in the absence of direct cerebrovascular involvement (stroke). This study was designed to assess specific attentional deficits in children with sickle cell disease. 12 children with sickle cell disease (Hb SS) with a prior history of stroke, 14 children with sickle cell disease (Hb SS) without evidence of stroke, and 13 similar aged siblings (Hb AA or Hb AS) were compared on measures of attention, intellectual functioning, achievement, and adaptive functioning. Significant differences were found between children with sickle cell disease (with or without stroke) and healthy controls on a timed test of visual scanning, the Coding subtest of the Wechsler Intelligence Scale for Children-Revised, and subtests of Reading, Arithmetic, and Spelling from the Wide Range Achievement Test-Revised. The differences between children with sickle cell disease and their healthy siblings appear to be the result of strokes rather than sickle cell disease itself as children with sickle cell disease without strokes did not significantly differ from controls. Implications for the effects of sickle cell disease and stroke on academic performance are discussed.
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