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KMID : 1140920180420060833
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Annals of Rehabilitation Medicine
2018 Volume.42 No. 6 p.833 ~ p.837
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Improvement of Peak Cough Flow After the Application of a Mechanical In-exsufflator in Patients With Neuromuscular Disease and Pneumonia: A Pilot Study
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Jung Ji-Ho
Oh Hyeon-Jun
Lee Jang-Woo
Suh Mi-Ri
Park Ji-Hyun
Choi Won-Ah
Kang Seong-Woong
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Abstract
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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 ?40 cmH2O; 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.
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KEYWORD
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Mechanical in-exsufflator, Neuromuscular diseases, Pneumonia, Peak cough flow
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