Clinical Focus ›› 2024, Vol. 39 ›› Issue (1): 12-19.doi: 10.3969/j.issn.1004-583X.2024.01.002

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Effectiveness of cognitive interventions on elderly patients with amnestic mild cognitive impairment: A meta-analysis

Xiao Huangyi1, Yuan Jiankun1, Yan Ziyu1, Zeng Wenshu1, Lu Lanmo1, Wang Jun2()   

  1. 1. College of Nursing, Yunnan University of Chinese Medicine, Kunming 650500, China
    2. Department of Orthopaedics and Trauma Surgery, Affiliated Hospital of Yunnan University, Kunming 650032, China
  • Received:2023-05-25 Online:2024-01-20 Published:2024-03-22

Abstract:

Objective To systematically evaluate the effect of cognitive interventions on elderly patients with amnestic mild cognitive impairment (aMCI). Methods Randomized controlled trials (RCTs) reporting the effects of cognitive interventions on patients with aMCI published from 2005 to January 2023 were searched in the PubMed, Embase, Cumulative Index for Nursing and Allied Health Literature (CINAHL), The Cochrane Library, Web of Science, China Biomedical Literature Database, China National Knowledge Internet (CNKI), Wanfang and VIP Database. Two investigators were responsible for literature screening, data collection and quality assessment based on the RCT evaluation criteria in the Cochrane 5.1.0 manual. Meta-analysis was performed using Rev Man 5.4. Results A total of 10 eligible studies involving 671 cases were included. Meta-analysis results showed that after the intervention, patients in the cognitive intervention group had significantly better scores of the Mini-Mental State Examination (MMSE) ( M D=1.99, 95% C I 1.40, 2.58; P<0.01), the Alzheimer's Disease Assessment Scale-Cognitive Subscale (ADAS-Cog) and the Modified Alzheimer's Disease Assessment Scale-Cognitive Subscale (Modified-ADAS-Cog) ( M D=-3.65, 95% C I -4.89, -2.41; P<0.01), the Contentment Subscale of the Multifactorial Memory Questionnaire (MMQ-Contentment) ( M D=1.68, 95% C I -2.24, 5.60; P=0.40) and the Rivermead Behavioral Memory Test (RBMT) ( M D=4.69, 95% C I 3.41, 5.97; P<0.01) than those of the control group. The Quality of Life in Alzheimer Disease (QOL-AD) score was significantly higher in the cognitive intervention group than that of control group ( M D=1.79, 95% C I 0.60, 2.97; P=0.003). Conclusion The existing evidences have suggested that cognitive interventions may improve memory satisfaction, behavioral memory capacity and quality of survival, and delay the development of Alzheimer's disease in patients with aMCI. The effect of cognitive interventions on improving their cognitive function has been controversial possibly due to the small sample size, high rate of drop-out, and inconsistent baseline levels of cognitive function. Large-scale randomized controlled trials are needed to explore the function of cognitive interventions in Alzheimer's disease patients with aMCI.

Key words: amnestic mild cognitive impairment, cognitive rehabilitation, memory training, alzheimer's disease, meta-analysis

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