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  • Title: Protein inhibition of surfactant during mechanical ventilation of isolated rat lungs.
    Author: Da Silva K, McCaig LA, Veldhuizen RA, Possmayer F.
    Journal: Exp Lung Res; 2005 Sep; 31(7):745-58. PubMed ID: 16203627.
    Abstract:
    This study tested the hypothesis that material leaking into the airspace from the vasculature during ventilation interferes with surfactant function and contributes to decreases in lung compliance. Rats were euthanized and the lungs were isolated either with or without flushing of the vasculature, followed by mechanical ventilation and analysis of lung compliance and lung lavage analysis. Flushed lungs had higher lung compliance compared to the non-flushed lungs. This was associated with lower protein concentrations and improved surfactant activity. It is concluded that during mechanical ventilation, leakage of proteins results in surfactant inhibition and thereby contribute to decreased lung compliance.
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