Abstract
To compare the efficacy and safety of high-dose corticosteroids (initial prednisolone [PSL] of 100 mg or more daily) and standard-dose corticosteroids (initial PSL of 50-60 mg) in patients with Bell's palsy. A systematic review and meta-analysis. Medline, Embase, Cochrane Central Register of Controlled Trials, Ichushi-Web, Web of Science, and CINAHL, combined with data from ClinicalTrials.gov. Published and unpublished cohort studies comparing high- and standard-dose corticosteroids in adult patients with Bell's palsy were included. Study characteristics (study design, patient's number), patient characteristics (sex, age, disease severity, prescription of antivirals), and outcomes (nonrecovery, any adverse effects). From the 1,974 identified articles, 8 studies were met eligible criteria. Of the included studies, the initial dose in high-dose corticosteroids regimens varied from 120 mg to 200 mg PSL daily. Compared with standard-dose corticosteroids, high-dose corticosteroids were associated with a significantly decreased nonrecovery at 6 months after disease onset (odds ratio 0.42, 95% confidence interval 0.22-0.80; very low quality) in patients with Bell's palsy. No severe adverse effects were observed in patients receiving high- or standard-dose corticosteroids. High-dose corticosteroids reduce nonrecovery in patients with Bell's palsy. The dose of high-dose corticosteroids was varied and further prospective study is needed to identify an adequate dose of corticosteroids in these patients.
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