Effect of chest strapping on regional lung function.

Journal of Applied Physiology
G SybrechtN R Anthonisen

Abstract

We studied lung mechanics and regional lung function in five young men during restrictive chest strapping. The effects on lung mechanics were similar to those noted by others in that lung elastic recoil increased as did maximum expiratory flow at low lung volumes. Chest strapping reduced the maximum expiratory flow observed at a given elastic recoil pressure. Breathing helium increased maximum expiratory flow less when subjects were strapped than when they were not. These findings indicated that strapping decreased the caliber of airways upstream from the equal pressure point. Regional lung volumes from apex to base were measured with xenon 133 while subjects were seated. The distribution of regional volumes was measured at RV, and at volumes equal to strapped FRC and strapped TLC; no change due to chest strapping was observed. Similarly, the regional distribution of 133Xe boluses inhaled at RV and strapped TLC was unaffected by chest strapping. Closing capacity decreased with chest strapping. We concluded that airway closure decreased during chest strapping and that airway closure was not the cause of the observed increase in elastic recoil of the lung. The combination of decreased slope of the static pressure-volume curve and...Continue Reading

Citations

May 8, 2000·Journal of Applied Physiology·D E O'DonnellK A Webb
Jun 28, 2008·European Journal of Applied Physiology·Fernando S Guimarães, Walter A Zin
Aug 31, 2014·Annals of the American Thoracic Society·Michael EberleinRoy G Brower
Jan 1, 1984·Intensive Care Medicine·G HedenstiernaS Baehrendtz
Apr 20, 2010·Acta Anaesthesiologica Scandinavica·S PulletzI Frerichs
Apr 1, 1983·Acta Anaesthesiologica Scandinavica·R Lundh, G Hedenstierna
Jan 1, 1990·The American Review of Respiratory Disease·C M WienerJ M Hughes
Oct 1, 1992·The American Review of Respiratory Disease·T NishinoK Hiraga
Jul 30, 2021·Critical Care : the Official Journal of the Critical Care Forum·John J Marini, Luciano Gattinoni

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