Burden and risk of neurological and cognitive impairment in pediatric sickle cell anemia in Uganda (BRAIN SAFE): final results of the cross-sectional analysis

Nancy Green, Deogratias Munube, Paul Bangirana, Linda Buluma, Bridget Kebirungi, Robert Opoka, Ezekiel Mupere, Philip Kasirye, Sarah Kiguli, Annet Birabwa

Research output: Contribution to journalArticle

Abstract

Background: Children with sickle cell anemia (SCA) are highly susceptible to stroke and other manifestations of pediatric cerebral vasculopathy. Detailed evaluations in sub-Saharan Africa are limited.

Methods: We aimed to establish the frequency and types of pediatric brain injury in a cross-sectional study at a large SCA clinic in Kampala, Uganda in a randomly selected sample of 265 patients with HbSS ages 1–12 years. Brain injury was defined as one or more abnormality on standardized testing: neurocognitive impairment using an age-appropriate test battery, prior stroke by examination or transcranial Doppler (TCD) velocities associated with stroke risk in children with SCA (cerebral arterial time averaged mean maximum velocity ≥ 170 cm/second).

Results: Mean age was 5.5 ± 2.9 years; 52.3% were male. Mean hemoglobin was 7.3 ± 1.01 g/dl; 76.4% had hemoglobin

Conclusions: The high frequency of neurocognitive impairment or other abnormal results describes a large burden of pediatric SCA brain disease in Uganda. Evaluation by any single modality would have underestimated the impact of SCA. Testing the impact of hydroxyurea or other available disease-modifying interventions for reducing or preventing SCA brain effects is warranted.

Original languageUndefined/Unknown
JournalPaediatrics and Child Health, East Africa
DOIs
Publication statusPublished - 1 Oct 2019

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