• Annals of Rehabilitation Medicine
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• v.42 no.6
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• pp.833-837
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• 2018

Objective To investigate and demonstrate persistent increase of peak cough flow after mechanical in-exsufflator application, in patients with neuromuscular diseases and pneumonia. Methods A mechanical in-exsufflator was applied with patients in an upright or semi-upright sitting position (pressure setting, +40 and $-40cmH_2O$; in-exsufflation times, 2-3 and 1-2 seconds, respectively). Patients underwent five cycles, with 20-30 second intervals to prevent hyperventilation. Peak cough flow without and with assistive maneuvers, was evaluated before, and 15 and 45 minutes after mechanical in-exsufflator application. Results Peak cough flow was 92.6 L/min at baseline, and 100.4 and 100.7 L/min at 15 and 45 minutes after mechanical in-exsufflator application, respectively. Assisted peak cough flow at baseline, 15 minutes, and 45 minutes after mechanical in-exsufflator application was 170.7, 179.3, and 184.1 L/min, respectively. While peak cough flow and assisted peak cough flow increased significantly at 15 minutes after mechanical in-exsufflator application compared with baseline (p=0.030 and p=0.016), no statistical difference was observed between 15 and 45 minutes. Conclusion Increased peak cough flow after mechanical in-exsufflator application persists for at least 45 minutes.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.7
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• pp.3030-3036
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• 2012

The purpose of this study was to investigate the efficacy of mechanical in-exsufflator (MI-E) with on pulmonary rehabilitation in stroke patients with trachostomy tube. Methods： We studied ten stroke patients who had neither history nor radiologic finding of pulmonary disease. The pulmonary function was evaluated by measuring forced vital capacity (FVC), forced expiratory volume at one second (FEV1) and forced expiratory ratio (FEV1/FVC) The capacity of cough was evaluated by measuring manual assisted peak cough flow (MPCF). Data were analyzed statistically using repeated ANOVA test. Results：The results were as follows : 1) There are significant improvement of FVC and FEV1 according to training period (p<.05). 2) There are significant improvement of MPCF according to training period (p<.05). Conclusion：These results suggest that MI-E training can be used as an effective therapeutic modality for improvement of pulmonary function and capacity of cough in stroke patients with tracheostomy.