Document Detail


Temperature affects lung fluid and recoil during high tidal ventilation at low resting volume.
MedLine Citation:
PMID:  3693205     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Effects of tidal volume (VT), end-expiratory pressure (EEP), and environmental temperature (Tenv) on elastic recoil force (Pel) and edema formation were examined in open-chest anesthetized rabbits. Sixty-two rabbits in four groups were ventilated for 3 h with VT of either 10 or 25 ml/kg body wt, EEP of 0 or 2 cmH2O, and Tenv of 18 or 35 degrees C. After ventilation, Pel at 80% of total lung capacity (P80) was significantly increased when ventilation was performed with the combination of large VT, 0 EEP, and low Tenv. This change was prevented by altering any one of the three conditions, e.g., small VT, positive EEP, or high Tenv. Similarly, elevation of minimum surface tension and reduction of surface activity index of lavages from excised lungs after ventilation were observed only when increased P80 was noted. Additionally, the increase of P80 was well correlated with increment of wet weight-to-dry weight ratio and degree of perivascular cuffing and alveolar edema formation of excised lungs. These results indicate that elevation of Pel after high tidal ventilation in open-chest animals in vivo was influenced by level of EEP and Tenv and that the degree of edema formation was closely related to the increase of Pel. The increased Pel is presumably primary and causes fluid accumulation.
Authors:
T Horie; T Izumi; K Hodaka; T Akashiba; Y Hosokawa; K Nagao; M Okayasu
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of applied physiology (Bethesda, Md. : 1985)     Volume:  63     ISSN:  8750-7587     ISO Abbreviation:  J. Appl. Physiol.     Publication Date:  1987 Nov 
Date Detail:
Created Date:  1988-01-27     Completed Date:  1988-01-27     Revised Date:  2013-09-26    
Medline Journal Info:
Nlm Unique ID:  8502536     Medline TA:  J Appl Physiol (1985)     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1705-10     Citation Subset:  IM    
Affiliation:
First Department of Internal Medicine, Nihon University School of Medicine, Tokyo, Japan.
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MeSH Terms
Descriptor/Qualifier:
Animals
Body Temperature*
Lung / pathology
Lung Compliance*
Lung Volume Measurements*
Organ Size
Oxygen / blood
Pulmonary Edema / pathology*
Rabbits
Surface Tension
Tidal Volume*
Total Lung Capacity
Chemical
Reg. No./Substance:
7782-44-7/Oxygen

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


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