Chinese Journal of Rehabilitation Theory and Practice ›› 2025, Vol. 31 ›› Issue (3): 306-313.doi: 10.3969/j.issn.1006-9771.2025.03.007

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Inspiratory muscle training for weaning outcomes in patients with weaning failure: a systematic review

CAI Qian1, ZHANG Xi1, SU Hairong2, LIU Na1, HUANG Ying1, LI Jiqiang1, XIA Jin'gen3(), ZHENG Decai1()   

  1. 1. The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
    2. The Ninth Medical Center of the People's Liberation Army, Beijing 100101, China
    3. Department of Respiratory and Critical Care Medicine, China-Japan Friendship Hospital, Beijing 100029, China
  • Received:2024-11-07 Revised:2024-12-16 Published:2025-03-25 Online:2025-03-25
  • Contact: XIA Jin'gen, E-mail: xiajingen_00632@163.com; ZHENG Decai, E-mail: sandzheng@163.com
  • Supported by:
    Guangdong Province Traditional Chinese Medicine Health Service and Industry Development Research Center Project(2024YBA04);Guangdong Provincial Hospital of Traditional Chinese Medicine Talent Training Project for Traditional Chinese Medicine Rehabilitation(01020184);Japan-China Friendship Hospital "Elite Program" Talent Cultivation Project Core Project(ZRJY2023-GG21)

Abstract:

Objective To systematically evaluate the effect of inspiratory muscle training (IMT) on weaning outcomes in patients with weaning failure.

Methods Literatures in Chinese and English were retrieved from databases such as PubMed, Cochrane Library, Web of Science, Embase, CNKI, VIP, Wanfang data and CBM for researches on the effect of IMT in mechanical ventilation weaning failure, from the inception of the databases to October 22, 2024. The methodological quality of the researches was evaluated with PEDro scale, and data were extracted for a systematic review.

Results Nine randomized controlled trials were included, published between 2011 and 2023, from Brazil, China, the United States, Iran and Australia, with a total of 499 patients. The scores of the PEDro scale ranged five to eight. The population included patients with prolonged weaning, difficult weaning and tracheostomy. The IMT methods included threshold load training and tapered flow resistance training. The training intensity was 30% to 80% of maximal inspiratory pressure (MIP), and some researches did not set the training intensity based on MIP. The progression of intensity varied widely across researches. The intervention frequency ranged from five to 30 breaths per set, with at least one minute rest between sets, two to six sets per session, one to two sessions per day, and five to seven days per week. The duration of the intervention ranged from successful weaning, one week after weaning, extubation, or four days to eight weeks. Regarding the efficacy of the intervention, IMT was not beneficial for the duration of mechanical ventilation and intensive care unit (ICU) length of stay on weaning failure patients. However, the effect of IMT on weaning successful rates, duration of weaning, MIP and mortality was inconsistent.

Conclusion IMT can not improve the duration of mechanical ventilation and ICU length of stay for weaning failure patients, and there is still debate regarding its effect on successful rate of weaning, duration of weaning, MIP and mortality.

Key words: inspiratory muscle training, weaning failure, ventilator weaning, systematic review

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