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Hydroxyurea can be used in children with sickle cell disease and cerebral vasculopathy for the prevention of chronic complications? A meta-analysis.
Journal of Child Health Care : for Professionals Working with Children in the Hospital and Community 2019 January 4
We conducted a systematic review for evaluating the impact of hydroxyurea and chronic blood transfusion in children with sickle cell disease (SCD). A search was done in four databases from inception to 2017. Trials enrolling pediatric patients with SCD and cerebral vasculopathy with or without previous episode of stroke and that reported outcomes of occurrence of stroke and other events were included. Trained reviewers determined eligibility, risk of bias, and abstracted data. Random-effects meta-analysis was conducted. We found that the primary outcome was the occurrence of stroke. We found two trials that recruited 254 patients. No difference was found for confirmed stroke occurrence (risk difference 0.04 [95% CI: -0.03 to 0.03]) and for new-onset neurological deficit (risk difference 0.11 [95% CI: -0.00 to 0.21]). Transfusions provided a significant lower risk of vaso-occlussive crisis (risk difference 0.10 [95% CI: 0.001 to 0.20]). Finally, transfusions provided a lower risk of having high concentrations of abnormal hemoglobin S (mean difference 37.94 [95% CI: 27.55 to 48.32]). As a conclusion, transfusions plus chelation therapy might be used instead of hydroxyurea in children with SCD. There is a lack of high-quality research in the care of children with SCD, and therefore a call for action is needed.
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