Artificial External Glottic Device for Passive Lung Insufflation.
10.3349/ymj.2011.52.6.972
- Author:
Dong Hyun KIM
1
;
Seong Woong KANG
;
Yoon Ghil PARK
;
Won Ah CHOI
;
Hye Ree LEE
Author Information
1. Department of Rehabilitation Medicine, College of Medicine, Kyung Hee University, Seoul, Korea.
- Publication Type:Original Article ; Research Support, Non-U.S. Gov't
- Keywords:
Air stacking;
lung insufflation;
maximal insufflation capacity
- MeSH:
Adult;
Aged;
Female;
Forced Expiratory Flow Rates/physiology;
Humans;
Insufflation/*instrumentation/methods;
Male;
Middle Aged;
Neuromuscular Diseases/*physiopathology/therapy;
*Ventilators, Mechanical;
Vital Capacity/physiology;
Young Adult
- From:Yonsei Medical Journal
2011;52(6):972-976
- CountryRepublic of Korea
- Language:English
-
Abstract:
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.
