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Artificial external glottic device for passive lung insufflation

 Dong Hyun Kim  ;  Seong-Woong Kang  ;  Hye Ree Lee  ;  Won Ah Choi  ;  Yoon Ghil Park 
 Yonsei Medical Journal, Vol.52(6) : 972-976, 2011 
Journal Title
 Yonsei Medical Journal 
Issue Date
PURPOSE: For patients with neuromuscular disease, air stacking, which inflates the lungs to deep volumes, is important for many reasons. However, neuromuscular patients with severe glottic dysfunction or indwelling tracheostomy tubes cannot air stack effectively. For these patients, we developed a device that permits deep lung insufflations substituting for glottic function. MATERIALS AND METHODS: Thirty- seven patients with bulbar-innervated muscle weakness and/or tracheostomies were recruited. Twenty-three had amyotrophic lateral sclerosis, and 14 were tetraplegic patients due to cervical spinal cord injury. An artificial external glottic device (AEGD) was used to permit passive deep lung insufflation. In order to confirm the utility of AEGD, vital capacity, maximum insufflation capacity (MIC), and lung insufflation capacity (LIC) with AEGD (LICA) were measured. RESULTS: For 30 patients, MICs were initially zero. However, with the use of the AEGD, LICA was measurable for all patients. The mean LICA was 1,622.7±526.8 mL. Although MIC was measurable for the remaining 7 patients without utilizing the AEGD, it was significantly less than LICA, which was 1,084.3±259.9 mL and 1,862.9±248 mL, respectively (p<0.05). CONCLUSION: The AEGD permits lung insufflation by providing deeper lung volumes than possible by air stacking.
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Family Medicine (가정의학교실)
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Rehabilitation Medicine (재활의학교실)
Yonsei Authors
강성웅(Kang, Seong Woong) ; 박윤길(Park, Yoon Ghil) ; 이혜리(Lee, Hye Ree) ; 최원아(Choi, Won Ah)
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