The efficacy and safety of acupuncture and moxibustion for breast cancer lymphedema: a systematic review and network meta-analysis

BACKGROUND: Breast cancer lymphedema (BCL) is one of the most common complications of breast cancer. Common western medical treatments for BCL, such as western medicine and lymphatic drainage, are ineffective, and recurrence may easily occur, making treatment more challenging and placing a heavier burden on patients. Acupuncture therapy is commonly used to treat BCL in China, and there are many acupuncture therapies, including acupuncture, moxibustion, and the combination of acupuncture and moxibustion. Given the difference in operation difficulty, efficacy and safety of these acupuncture types, how to the most effective therapy is controversial. Therefore, the purpose of this study was to compare the efficacy and safety of different acupuncture and moxibustion methods, so as to provide guidance for clinical practice. METHODS: The PubMed, Web of Science, Embase, Cochrane Library, China National Knowledge Infrastructure (CNKI), Wanfang, VIP, and SinoMed databases were searched to September 30, 2022. Participants were diagnosed with BCL. Acupuncture was used in the intervention group, and other acupuncture were used in the control group. Outcomes included arm circumference, visual analogue scale (VAS), and safety evaluation. Risk of Bias Assessment Tool 2 (ROB2) was used to assess the risk of bias, Stata 16 was used for network meta-analysis. RESULTS: A total of 7 studies were included, with 422 patients. The interventions included fire acupuncture, acupuncture (face), moxa-moxibustion, heat-sensitive moxibustion, moxibustion [traditional Chinese medicine (TCM)], acupuncture combine with moxibustion, acupoint application. The risk of overall bias was low or some concerns. The meta-analysis showed that: (I) arm circumference: acupuncture combined with moxibustion was superior to acupoint application [mean difference (MD) =−0.54; 95% confidence interval (CI): (−0.67, −0.41); P<0.05]. The surface under the cumulative ranking probability area (SUCRA) ranking results showed that acupuncture combined with moxibustion may be the optimal method. (II) VAS: acupuncture (face) was more effective than acupuncture (body) [MD =−0.85; 95% CI: (−1.09, −0.61); P<0.01]. The SUCRA ranking results showed that acupuncture (face) had the best effect. CONCLUSIONS: Based on the current evidence, acupuncture and moxibustion is of great efficacy and safety for the treatment of BCL. Acupuncture combined with moxibustion is the most effective in reducing the arm circumference, and acupuncture (face) is of the greatest analgesic effect.