Document Detail


Influence of lung and chest wall compliances on transmission of airway pressure to the pleural space in critically ill patients.
MedLine Citation:
PMID:  3902386     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Nineteen patients with acute respiratory failure were divided into three groups according to their total compliance (CT). Transmission of airway pressure to the pleural space was then evaluated by measurement of esophageal pressure at both end-expiration and end-inspiration, and at three levels of PEEP. Chest wall (CW) and lung complicance (CL) were also calculated from simultaneous measurements of lung volume changes induced by tidal delivery. In group 1 (CT greater than 45 ml/cmH2O), 37 percent of airway pressure was transmitted to pleural space. In group 2 (CT between 45 and 30 ml/cmH2O), 32 percent of airway pressure was transmitted to the pleural space. In group 3 (CT less than 30 ml/cmH2O), only 24 percent of airway pressure was transmitted to the pleural space. These differences are statistically significant (p less than 0.001) and illustrate the influence of a progressive increase in lung stiffness (CL = 100.3 +/- 17.2 ml/cmH2O in group 1, CL = 45.0 +/- 6.3 ml/cmH2O in group 2, and CL = 28.6 +/- 8.9 ml/cmH2O in group 3) on transmission of airway pressure to the pleural space. Despite lesser transmission of airway pressure to the pleural space in the most damaged lungs, no significant difference was found between groups with regard to transmural venous pressure changes throughout the study.
Authors:
F Jardin; B Genevray; D Brun-Ney; J P Bourdarias
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Chest     Volume:  88     ISSN:  0012-3692     ISO Abbreviation:  Chest     Publication Date:  1985 Nov 
Date Detail:
Created Date:  1985-12-09     Completed Date:  1985-12-09     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0231335     Medline TA:  Chest     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  653-8     Citation Subset:  AIM; IM    
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MeSH Terms
Descriptor/Qualifier:
Acute Disease
Compliance
Esophagus / physiology
Humans
Lung / physiopathology
Lung Compliance*
Lung Volume Measurements
Pleura / physiology*
Positive-Pressure Respiration*
Pressure
Respiratory Insufficiency / physiopathology*
Thorax / physiology*
Trachea / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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