Abstract
ObjectiveTo assess the effects and associated risks of Chinese herbal medicine (CHM) for diabetic foot ulcer (DFU). MethodsWe systematically searched seven electronic databases for randomized controlled trials (RCTs) about Chinese herbal medicines for treating diabetic foot ulcers. The methodological quality of RCTs was assessed by the Cochrane risk of bias tool. Data was synthesized using review manager (RevMan) 5.3. Meta-analysis was conducted if the data were available. A summary of finding table was generated by The GRADEpro Guideline Development Tool (GDT) online. ResultsForty-nine RCTs, all conducted in China, involving 3646 participants were included. Most of the included trials had unclear or high risk of bias. Twenty-six trials could be pooled in five Meta-analyses, the remaining trials could not be pooled due to the obvious clinical heterogeneity. Only low evidence showed CHM therapy may have 42%–60.4% participants healed completely after treatment, approximately twice (RR 1.42–1.76) as much as the healed rates in conventional therapy (or plus hot water foot bath) group. Majority of the included trials reported benefit of CHM group on shortening healing time (4–23 days) and reducing ulcer wound size (at least 2 cm2). No serious adverse events were reported related to the medication in all trials. ConclusionWeak evidence showed benefit of CHM as add-on treatment of conventional therapy on increasing number of ulcer heals in patients with DFU. That's about twice the healing rate of the conventional treatment (or plus hot water foot bath) group. With insufficient information, we could not draw confirmative conclusion on safety of CHM administration. These findings need to be tested in further large, rigorous trials.
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