Acupuncture for treating chronic stable angina pectoris-associated anxiety and depression: A protocol for systematic review and meta-analysis

BACKGROUND: There are numerous studies worldwide on the use of acupuncture as complementary therapy for chronic stable angina pectoris (CSAP). However, the high morbidity of CSAP-associated anxiety and depression is often overlooked. This protocol of systematic review and meta-analysis aims to assess whether acupuncture is effective as a complementary therapy for anxiety and depression in patients with CSAP. METHODS: The following 8 databases will be searched from inception to February 2020 with no language restrictions: PubMed, Excerpt Medical Database, Web of Science, the Cochrane Library, Chinese Biomedical Database, China National Knowledge Infrastructure, VIP Database and Wanfang Database. Eligible randomized controlled trials and controlled clinical trials will be included. Study selection, data extraction, and risk of bias assessment will be performed independently by 2 reviewers, differences will be resolved by the third reviewer. The primary outcomes include the level of anxiety or depression measured by qualified scales, angina attack frequency, and angina pain intensity. Revman 5.3 software will be used to perform the assessment of the risk of bias and data synthesis. The review will grade the quality of the evidence based on the Grading of Recommendation, Assessment, Development, and Evaluation system. RESULTS: This systematic review and meta-analysis will provide reliable evidence about the effect and safety of acupuncture as a complementary therapy for CSAP-associated anxiety and depression. CONCLUSION: The conclusion of this study will be published in a peer-reviewed journal. ETHICS AND DISSEMINATION: This review will not involve private information of participants, so the ethical approval will not be required. The results will be disseminated in a peer-reviewed journal or conference presentation. Important protocol modifications will be updated on PROSPERO. PROSPERO REGISTRATION NUMBER: CRD42020165492.