《Chinese Journal of Rehabilitation Theory and Practice》 ›› 2023, Vol. 29 ›› Issue (6): 691-696.doi: 10.3969/j.issn.1006-9771.2023.06.009

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Effect of transcutaneous auricular vagus nerve stimulation combined with robot-assisted therapy on upper limb function of stroke patients

ZHENG Li1,2,3, BAO Zhicheng2, ZHANG Qi2, REN Xuyan1, SU Min1,3()   

  1. 1. Department of Rehabilitation Medicine, Dushu Lake Hospital Affiliated to Soochow University, Suzhou, Jiangsu 215000, China
    2. Department of Rehabilitation Medicine, the First People's Hospital of Kunshan, Kunshan, Jiangsu 215300, China
    3. Institute of Rehabilitation, Soochow University, Suzhou, Jiangsu 215000, China
  • Received:2023-03-30 Revised:2023-05-29 Published:2023-06-25 Online:2023-07-14
  • Contact: SU Min, E-mail: sumin@suda.edu.cn
  • Supported by:
    National Natural Science Foundation of China(82272594);Jiangsu Provincial Natural Fund (General)(BK20211088);National Key Research and Development Program(2022YFC2009706)

Abstract:

Objective To investigate the effect of transcutaneous auricular vagus nerve stimulation (taVNS) combined with robot-assisted therapy on upper limb function of subacute stroke patients.
Methods From March, 2022 to March, 2023, 60 subacute stroke patients from Dushu Lake Hospital and the First People's Hospital of Kunshan were randomly divided into control group (n = 20), robot group (n = 20) and combined group (n = 20). All the groups received conventional treatments including medication, physical therapy and occupational therapy; the robot group received sham taVNS combined with hand robot-assisted therapy; while the combined group received taVNS combined with hand robot-assisted therapy, for four weeks. They were assessed with Fugl-Meyer Assessment-Upper Extremities (FMA-UE) and hand part, the root mean square (RMS) electromyography of the extensor carpi radialis and extensor digitorum muscles during contraction, and the latency and amplitude of transcranial magnetic stimulation motor-evoked potential (TMS-MEP) before and after treatment.
Results After treatment, the scores of FMA-UE and hand part, RMS of the extensor carpi radialis and extensor digitorum muscles, and latency and amplitude of TMS-MEP improved in all the groups (t > 2.099, P < 0.05); and they were the best in all indicators in the combined group (F > 9.106, P < 0.001).
Conclusion taVNS combined with robot-assisted therapy can promote central nervous system remodeling and further improve upper limb function in stroke patients.

Key words: stroke, transcutaneous auricular vagus nerve stimulation, robot-assisted therapy, upper limb, motor function

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