Chinese Journal of Tissue Engineering Research ›› 2023, Vol. 27 ›› Issue (20): 3274-3280.doi: 10.12307/2023.150

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Therapeutic effect of different-frequency repetitive transcranial magnetic stimulations on post-stroke cognitive impairment: a Meta-analysis

Yin Yikun1, 2, Wang Jialin2, Sun Junzhi2   

  1. 1College of Physical and health Education, Guangxi Normal University, Guilin 541004, Guangxi Zhuang Autonomous Region, China; 2Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu 610041, Sichuan Province, China
  • Received:2022-01-21 Accepted:2022-05-24 Online:2023-07-18 Published:2022-11-21
  • Contact: Sun Junzhi, PhD, Senior laboratory technician, Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu 610041, Sichuan Province, China
  • About author:Yin Yikun, Master candidate, College of Physical and health Education, Guangxi Normal University, Guilin 541004, Guangxi Zhuang Autonomous Region, China; Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu 610041, Sichuan Province, China
  • Supported by:
    the National Key Research and Development Project of China, No. 2019YFF0301704  (to SJZ)

Abstract: OBJECTIVE: Post-stroke cognitive impairment (PSCI) is mainly manifested as impairment of attention, orientation, memory and visuospatial functions. Repetitive transcranial magnetic stimulation can stimulate brain nerve cells, change the action potential of nerve cells, and improve brain cognitive functions such as speech, memory, attention, and executive ability. This study systematically evaluated the efficacy of repetitive transcranial magnetic stimulation in improving cognitive impairment in stroke patients.
METHODS: Randomized controlled trials addressing repetitive transcranial magnetic stimulation for cognitive impairment in stroke patients were searched from CNKI, VIP database, PubMed, Cochrane Library, EBSCO, Web of Science and other electronic databases. The retrieval time was from the database inception to December 2021. Montreal Cognitive Assessment Scale, Mini-Mental State Examination, P300 event-related potential (latency, amplitude), and modified Barthel index were used as outcome indicators. The risk assessment of the screened literatures was carried out according to the Cochrane tool described in the Cochrane Handbook for Systematic Reviews of Interventions. RevMan5.4 software was used for Meta-analysis.
RESULTS: A total of 16 randomized controlled trials with 847 patients were included. Meta-analysis results showed that Montreal Cognitive Assessment Scale [mean difference (MD)=3.40, 95% confidence interval (CI): 2.57-4.24, P < 0.000 1), Mini-Mental State Examination (MD=2.22, 95% CI: 0.78-3.65, P=0.002), auditory event-related potential P300 latency (MD=-27.11, 95% CI: -35.56 to -18.66, P < 0.000 1) and P300 amplitude (MD=1.91, 95% CI: 1.06-2.76, P < 0.000 1), and modified Barthel index score (MD=6.98, 95% CI: 3.41-10.56, P=0.000 1) were better in the experimental group than the control group. Subgroup analysis showed that low-frequency (≤ 1 Hz) repetitive transcranial magnetic stimulation had a slightly lower effect than high-frequency (> 1 Hz) repetitive transcranial magnetic stimulation in improving cognitive function of stroke patients, but there was no significant difference between them.
CONCLUSION: Current evidence suggests that both high- and low-frequency repetitive transcranial magnetic stimulation therapies can effectively improve the cognitive function and daily living ability of stroke patients. Limited by the number and quality of included studies, the above conclusions need to be verified by more high-quality studies.

Key words: repetitive transcranial magnetic stimulation, stroke, high frequency, low frequency, cognitive impairment, randomized controlled trial, system evaluation, Meta-analysis

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