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Effect of Chinese medicine for promoting blood circulation on microvascular angina: A systematic review and meta-analysis
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Effect of Chinese medicine for promoting blood circulation on microvascular angina: A systematic review and meta-analysis
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Journal Article
Effect of Chinese medicine for promoting blood circulation on microvascular angina: A systematic review and meta-analysis
2020
Overview
Blood-activating drugs (BADs) are widely used to treat microvascular angina in China. This study aims to summarize relevant evidence from randomized controlled trials (RCTs) to assess the efficacy and safety of BADs in the treatment of microvascular angina.
We searched for relevant studies before June 2019 from seven databases. Twenty-four studies were included of 1903 patients with microvascular angina. All studies compared the use of traditional Chinese medicine for activating blood circulation (BADs) and Western medicine (WM) with the use of Western medicine alone.
In all, 15 trials reported a significant effect of BADs on improving clinical symptoms compared with the control treatment (P < .00001), and 8 trials reported significant effects of BADs on reducing the frequency of angina pectoris attacks compared with Western medicine treatment (P < .00001). The pooled results also demonstrated that BADs provided a significant benefit in reducing the dosage of nitroglycerin required (P = .02), the maximum range of ST-segment depression (P = .003) and the descending degree of the ST-T segment of ECG (P = .0002); prolonging the total time of treadmill exercise (P < .00001) and the time of ST-segment depression of 1 mm (P = .002); enhancing the total effective rate of Traditional Chinese Medicine (TCM) syndromes (P < .00001); improving endothelial function (P < .00001); and reducing the levels of high-sensitivity C-reactive protein (hs-CRP) (P < .00001). BAD treatment showed no statistically significant effect on the levels of TNF-a (P = .8) or IL-6 (P = .13). No severe adverse events were reported.
This meta-analysis shows that BADs are effective for the treatment of microvascular angina. Although concerns regarding selective bias and low methodological quality were raised, our findings suggest that BADs are beneficial for patients with microvascular angina and should be given priority for future clinical studies.
Publisher
Elsevier Inc,Elsevier Limited
Subject
A systematic review and meta-analysis
/ Angina
/ C-Reactive Protein - metabolism
/ Drugs, Chinese Herbal - therapeutic use
/ Humans
/ Medicine, Chinese Traditional
/ Microvascular Angina - drug therapy
/ Microvascular Angina - metabolism
/ Microvascular Angina - physiopathology
/ Nitroglycerin - administration & dosage
/ Patients
/ Randomized Controlled Trials as Topic
/ Traditional Chinese medicine
