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Representative strip-chart recorder tracing describing the methods used for measuring tidal swings in the pleural pressure (Ppl) and transdiaphragmatic pressure (Pdi) tracings

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posted on 30.12.2011, 22:50 by Adelaida M Miro, Michael R Pinsky, Paul L Rogers

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Taken from "Effects of the components of positive airway pressure on work of breathing during bronchospasm"

Critical Care 2004;8(2):R72-R81.

Published online 9 Feb 2004

PMCID:PMC420031.

Copyright © 2004 Miro et al., licensee BioMed Central Ltd. This is an Open Access article: verbatim copying and redistribution of this article are permitted in all media for any purpose, provided this notice is preserved along with the article's original URL.

The pressure–time integrals of the diaphragm (∫Ppldt) and pleural pressure (∫Pdidt) were computer-calculated as the area of the pressure tracing defined by the inspiratory portion of the airflow tracing. EXP, expiratory; INSP, inspiratory.

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