Document Detail


Effect of inhaled nitric oxide on pulmonary function after sepsis in a swine model.
MedLine Citation:
PMID:  8047999     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Inhaled nitric oxide (NO) has been shown to improve sepsis induced pulmonary dysfunction. This study evaluated the mechanism by which inhaled NO improves pulmonary function in a porcine sepsis model. METHODS: After an infusion of Escherichia coli lipopolysaccharide (LPS, 200 micrograms/kg), animals were resuscitated with saline solution (1 ml/kg/min) and observed for 3 hours while mechanically ventilated (fraction of inspired oxygen, 0.6; tidal volume, 12 ml/kg; positive end-expiratory pressure, 5 cm H2O). Group 1 (LPS, n = 6) received no additional treatment. Group 2 (NO, n = 6) received inhaled NO (40 ppm) for the last 2 hours. Group 3 (control, n = 5) received only saline solution without LPS. Cardiopulmonary variables and blood gases were measured serially. Multiple inert gas elimination technique was performed at 3 hours. Wet to dry lung weight ratio was measured after necropsy. RESULTS: Lipopolysaccharide resulted in pulmonary arterial hypertension, pulmonary edema, and hypoxemia. Multiple inert gas elimination technique analysis indicated a significant increase in blood flow to true shunt and high ventilation perfusion distribution (VA/Q) areas with an increased dispersion of VA/Q distribution. All of these changes were significantly attenuated by NO. CONCLUSIONS: Inhaled NO significantly improved LPS induced VA/Q mismatching by decreasing both true shunt and high VA/Q areas, by decreasing pulmonary edema, and by redistributing blood flow from true shunt to ventilated areas.
Authors:
H Ogura; W G Cioffi; P J Offner; B S Jordan; A A Johnson; B A Pruitt
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Surgery     Volume:  116     ISSN:  0039-6060     ISO Abbreviation:  Surgery     Publication Date:  1994 Aug 
Date Detail:
Created Date:  1994-08-30     Completed Date:  1994-08-30     Revised Date:  2010-03-24    
Medline Journal Info:
Nlm Unique ID:  0417347     Medline TA:  Surgery     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  313-21     Citation Subset:  AIM; IM    
Affiliation:
U.S. Army Institute of Surgical Research, Fort Sam Houston, TX 78234-5012.
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MeSH Terms
Descriptor/Qualifier:
Administration, Inhalation
Animals
Bacterial Infections / physiopathology*
Escherichia coli / pathogenicity*
Female
Lipopolysaccharides / toxicity*
Lung / drug effects*,  physiology
Male
Nitric Oxide / administration & dosage,  pharmacology*
Swine
Chemical
Reg. No./Substance:
0/Lipopolysaccharides; 10102-43-9/Nitric Oxide

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


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