Traditional Chinese medicine for promoting mental health of patients with COVID-19:a scoping review

Objective:This study aimed to systematically review and depict the current studies of traditional Chinese medicine for the mental health of patients with coronavirus disease 2019(COVID-19).Methods:A scoping review was conducted by searching PubMed,Web of Science,CNKI,Wanfang database,VIP database,and SinoMed,with the retrieval time being from the establishment of the database to April 18,2022.The basic information of the included studies,objective,design,types of patients,interventions,outcomes,etc.,was reviewed and summarized narratively.Methodological quality was assessed using the Cochrane Risk of Bias assessment tool,the methodological index for nonrandomized studies or the Newcastle-Ottawa scale.Results:We identified 30 traditional Chinese medicine(TCM)studies from six databases.Among them,finished randomized controlled trials(n=16)accounted for most of the studies,followed by single-arm studies(n=9).In terms of study theme,20 studies defined the mental health of patients with COVID-19 as the research theme.Psychological assessment was included in the inclusion criteria(performed before participation)of nine studies,whereas the other studies only mentioned the mental outcomes.TCM interventions included TCM exercises(Yijinjing,Baduanjin,Liuzijue,Taichi),acupoint stimulation(auricular and body points),moxibustion,decoction,or granules based on TCM syndrome differentiation,decoction,or granules with fixed formulae(Baidu Jieduan granules,Xuanfei Baidu decoction,and Qingfei Paidu decoction),Chinese patent medicine(Jinhua Qinggan granules),TCM psychological therapy(TCM ideological therapy,TCM five-tone therapy,and TCM psychological sand table),and TCM nursing(dialectical care,dialectical diet,and psychological counseling).Anxiety and depression were the main outcomes evaluated in regard to mental health in patients with COVID-19.The limitations of methodological quality were predominantly from follow-up,blinding,and registration.Positive results were reported by 27 studies(90%,n=30).Conclusion:We summarized the existing literature about the impact of TCM on mental health in patients with COVID-19.The number of studies evaluating the impact of TCM on mental health is encouraging,but overall methodological quality was low.Several TCM interventions warrant further evaluation,particularly among populations outside of China,for the purpose of establishing supporting evidence.More importantly,research with stronger methodological quality needs to be developed.