Document Detail


Effects of different ventilation strategies on lung injury in newborn rabbits.
MedLine Citation:
PMID:  22451169     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: The results from experimental and clinical studies have shown that mechanical ventilation (MV) and/or hyperoxia may aggravate a pre-existing lung injury, or even cause lung injury in healthy lungs, despite the fact that it might be the only life-saving intervention available to a patient. The present study was designed to investigate the roles of MV and hyperoxia in the pathogenesis of lung injury. METHODS: Newborn New Zealand white rabbits were randomly assigned to an unventilated air control group or to one of the 2 × 3 × 3 ventilation strategies using a factorial design. The experimental groups were assigned different fractions of inspired oxygen (FiO(2) ), peak inspiratory pressures (PIP), and respiratory times (RT). The lung wet-to-dry ratio (W/D), lung histopathology scores, and cells in the bronchoalveolar lavage fluid (BALF) were analyzed for each group. The apoptosis levels were studied by immunohistochemistry and a terminal deoxynucleotidyl transferase dUTP nick end-labeling (TUNEL) assay. RESULTS: Different ventilation regimes induced alterations in microvascular permeability, differential histopathological grading, WBC and/or neutrophil and/or lymphocyte influx, and apoptosis levels; moreover, there were significant correlations and interaction effects between these indices. CONCLUSIONS: Our data demonstrate that different ventilation regimes can induce lung injury and that the interaction effects of the FiO(2) , the PIP and the RT may play crucial roles in the pathogenesis of lung injury. Pediatr Pulmonol. © 2012 Wiley Periodicals, Inc.
Authors:
Shaodong Hua; Xiaoying Zhang; Sheng Zhang; Jing Xu; Zhichun Feng
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-3-26
Journal Detail:
Title:  Pediatric pulmonology     Volume:  -     ISSN:  1099-0496     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8510590     Medline TA:  Pediatr Pulmonol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Wiley Periodicals, Inc.
Affiliation:
Department of Pediatrics, BaYi Children's Hospital of The General Military Hospital of Beijing PLA, Beijing, P.R. China.
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