Document Detail

Effects of high-frequency inflation (HFI) on expiratory activity.
MedLine Citation:
PMID:  3269055     Owner:  NLM     Status:  MEDLINE    
It has been reported that triangular-shaped positive pressure pulses applied to the airway (high-frequency inflation, HFI) stimulates pulmonary stretch receptors and prolongs expiratory duration. In the present experiment, changes in the integrated curve of expiratory activity induced by HFI were investigated. Duration until the onset of the expiratory activity (E1 stage) was unchanged. In the E2 stage, the initial ascending slope became steeper and higher peaks were reached during HFI stimulation. The period from the onset of the slope to the peak, previously designated the stage of active expiration (Ea stage), showed no consistent change in duration and remained unchanged on average. The period after the peak until the onset of the following inspiratory activity was consistently prolonged. This period was designated the declining stage of expiration (Ed stage).
M Sibuya; A Kanamaru; A Isobe; M Iwase; I Homma
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Tohoku journal of experimental medicine     Volume:  156 Suppl     ISSN:  0040-8727     ISO Abbreviation:  Tohoku J. Exp. Med.     Publication Date:  1988 Dec 
Date Detail:
Created Date:  1989-12-20     Completed Date:  1989-12-20     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0417355     Medline TA:  Tohoku J Exp Med     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  65-73     Citation Subset:  IM    
Department of Physiology, Showa University School of Medicine, Tokyo.
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MeSH Terms
Afferent Pathways / physiology
Electric Stimulation
High-Frequency Ventilation*
Respiratory Mechanics / physiology*
Vagus Nerve / physiology

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