• 1. School of Clinical Medicine, Southwest Medical University, Luzhou, Sichuan 646000, P. R. China;
  • 2. Department of Intensive Care Unit, Mianyang Central Hospital, Mianyang, Sichuan 621000, P. R. China;
  • 3. Hyperbaric Oxygen Therapy Center, Sichuan Academy of Medical Sciences & Sichuan Provincial People’s Hospital, Chengdu, Sichuan 610072, P. R. China;
ZENG Xianrong, Email: 570574804@qq.com
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Objective  To conduct a meta-analysis of the evidence on the efficacy and safety of hyperbaric oxygen therapy for vascular cognitive impairment. Methods  China National Knowledge Infrastructure, Chongqing VIP, Wanfang, SinoMed, PubMed, Embase, CINHAL, Cochrance Library were searched for all literatures on randomized controlled trials of hyperbaric oxygen therapy for vascular cognitive impairment from the establishment of databases to May 2022. Literature screening was performed by Endnote X9 software, and meta-analysis was performed by RevMan 5.4.1 software. Results  A total of 36 papers were included, with 3093 patients, including 1549 cases in the observation group (hyperbaric oxygen combined with drug treatment) and 1544 cases in the control group (drug treatment alone). Compared with the control group, the effective rate of the observation group [relative risk=1.23, 95% confidence interval (CI) (1.15, 1.30), P<0.00001], the scores of Mini Mental Status Examination [mean difference (MD)=3.19, 95%CI (2.66, 3.73), P<0.00001], and the scores of Montreal Cognitive Assessment [MD=2.98, 95%CI (2.07, 3.89), P<0.00001] were better than those of the control group. There was no significant difference in adverse reactions between the observation group and the control group (P>0.05). For the scores of Activities of Daily Living, subgroup analysis showed high heterogeneity among studies, so pooled analysis was not performed. Conclusion  Compared with drug therapy alone, hyperbaric oxygen combined with drug therapy can improve the cognitive function of patients with vascular cognitive impairment to a certain extent without increasing adverse reactions.

Citation: LIU Wenxiu, WANG Ming, PENG Xiaoling, ZENG Xianrong. Efficacy and safety of hyperbaric oxygen therapy for vascular cognitive impairment: a meta-analysis. West China Medical Journal, 2022, 37(6): 863-874. doi: 10.7507/1002-0179.202111008 Copy

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