Acupuncture as an Adjunctive Treatment for Angina Due to Coronary Artery Disease: A Meta-Analysis.

BACKGROUND In traditional Chinese medicine, acupuncture has been used to treat angina due to coronary artery disease (CAD). The aim of this systematic review of the literature and meta-analysis was to identify published randomized controlled trials (RCTs) that quantified the effectiveness of adjunctive acupuncture treatment in patients with angina due to CAD who were also treated with Western or Chinese medicine. MATERIAL AND METHODS A systematic review of the literature included a search of the PubMed, Embase, Cochrane library, and China National Knowledge Infrastructure (CNKI) databases, from their inception to September 2018. Published findings from RCTs were included that investigated the effectiveness of acupuncture as an adjunctive treatment for angina due to CAD in combination with Western or traditional Chinese medicine. The odds ratio (OR) and 95% confidence interval (CI) were calculated using the random-effects model to determine the outcomes of markedly and moderately effective rates for the use of acupuncture. RESULTS Twenty-four published RCTs were identified that included 1,916 patients with CAD. Patients who received adjunctive acupuncture treatment had a significantly increased markedly effective rate. However, the moderately effective rate between adjunctive acupuncture combined with standard treatment for angina and standard treatment alone was not statistically significant. Sensitivity analysis showed that the pooled results for the markedly and moderately effective rates were robust. Subgroup analysis in most subsets supported the main findings. CONCLUSIONS Meta-analysis supported a positive treatment effect for the use of acupuncture when used as adjunctive therapy in patients with angina due to CAD.