External Control of Exhalation for Cough Assistance: A Method for Patients With Glottis Dysfunction and/or Tracheostomy

Sang Chul Lee, Jung Hyun Park, Seong Woong Kang, Dong Hyun Kim, Sang Ha Song

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    Lee SC, Park JH, Kang S-W, Kim DH, Song SH. External control of exhalation for cough assistance: a method for patients with glottis dysfunction and/or tracheostomy. Objective: To investigate the effectiveness of our method of assisting a cough by mimicking the functions of the glottis in patients with bulbar muscle weakness or paralysis and/or those who had a tracheostomy tube. Design: Before-after trial. Setting: University rehabilitation hospital. Participants: Patients (N=35) with bulbar muscle weakness or paralysis and/or those who had a tracheostomy tube. Interventions: Not applicable. Main Outcome Measures: The unassisted peak cough flow (PCF), the assisted PCF, and the assisted PCF with the external control method mimicking glottis function by an end-inspiratory external closure of the airways. Results: Of the 35 patients, 13 were tracheostomized cervical cord injury patients, 11 were neuromuscular disease (NMD) patients with glottis dysfunction only, and 11 were NMD patients with a tracheostomy and glottis dysfunction. Assisted PCF with the external control method were higher than unassisted PCF and/or assisted PCF in all patients. Assisted PCF with the external control methods were measured in all of the patients even when the unassisted PCFs and/or assisted PCFs could not be measured. For patients with measurable assisted PCFs, the assisted PCF with the external control methods were significantly higher than the assisted PCFs. Conclusions: We showed the effectiveness of our method of assisting a cough by external control of the glottis in patients with bulbar muscle weakness or paralysis and/or those who had a tracheostomy tube who cannot effectively cough with the help of existing cough assistance methods.

    Original languageEnglish
    Pages (from-to)1402-1407
    Number of pages6
    JournalArchives of Physical Medicine and Rehabilitation
    Volume90
    Issue number8
    DOIs
    Publication statusPublished - 2009 Aug

    Keywords

    • Cough
    • Glottis
    • Rehabilitation
    • Tracheostomy

    ASJC Scopus subject areas

    • Rehabilitation
    • Physical Therapy, Sports Therapy and Rehabilitation

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