Document Detail


Lower respiratory tract colonization and infection during severe acute respiratory distress syndrome: incidence and diagnosis.
MedLine Citation:
PMID:  9351607     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Ventilator-associated pneumonia (VAP) is difficult to detect and is often unsuspected during adult respiratory distress syndrome (ARDS). We prospectively evaluated lower respiratory tract (LRT) colonization and infection in 30 patients with severe ARDS (PaO2/FIO2 ratio < 150 mm Hg), using repeated quantitative cultures of plugged telescopic catheter (PTC) specimens taken blindly via the endotracheal tube every 48 to 72 h after onset of ARDS. All patients except one were receiving antibiotics. When VAP was suspected on the presence of clinical criteria for infection, a repeated PTC and, when possible, a bronchoalveolar lavage (BAL) were obtained before any new antimicrobials were administered; samples growing > or = 10(3) cfu/ml (PTC) or > or = 10(4) cfu/ml (BAL) were considered diagnostic of infection. Twenty-four VAP episodes were diagnosed in 18 patients (60% of patients or 4.2/100 ventilator-days) a mean of 9.8+/-5.7 d after onset of ARDS. Eighteen LRT colonization episodes were recorded; 16 of 24 (66%) VAP episodes were preceded (by 2 to 6 d) by LRT colonization with the same organism(s), and only two episodes of colonization were not followed by VAP. We conclude that although VAP is of relatively late-onset during severe ARDS, its incidence is much higher than in other conditions and can be underestimated. Lower airways colonization is consistently followed by infection with the same organisms and precedes VAP in two thirds of episodes. Repeated protected specimens taken blindly may provide a useful means to predict infection and therefore allow early antimicrobial therapy in high-risk patients with diffuse lung injury.
Authors:
C Delclaux; E Roupie; F Blot; L Brochard; F Lemaire; C Brun-Buisson
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American journal of respiratory and critical care medicine     Volume:  156     ISSN:  1073-449X     ISO Abbreviation:  Am. J. Respir. Crit. Care Med.     Publication Date:  1997 Oct 
Date Detail:
Created Date:  1997-11-18     Completed Date:  1997-11-18     Revised Date:  2005-11-17    
Medline Journal Info:
Nlm Unique ID:  9421642     Medline TA:  Am J Respir Crit Care Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1092-8     Citation Subset:  AIM; IM    
Affiliation:
Service de Réanimation Médicale and Institut National de la Santé et de la Recherche Médicale, INSERM U 296, Hôpital Henri Mondor, Créteil, France.
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MeSH Terms
Descriptor/Qualifier:
Acute Disease
Adult
Anti-Bacterial Agents
Bronchoalveolar Lavage Fluid / microbiology
Bronchoscopy
Colony Count, Microbial
Drug Therapy, Combination / therapeutic use
Female
Gram-Negative Bacteria / drug effects,  growth & development*,  isolation & purification
Gram-Positive Bacteria / drug effects,  growth & development*,  isolation & purification
Humans
Incidence
Male
Middle Aged
Pneumonia, Bacterial / diagnosis*,  epidemiology,  etiology
Predictive Value of Tests
Prospective Studies
Respiration, Artificial / adverse effects
Respiratory Distress Syndrome, Adult / complications*,  therapy
Respiratory System / microbiology*
Superinfection / diagnosis,  epidemiology,  microbiology
Treatment Outcome
Chemical
Reg. No./Substance:
0/Anti-Bacterial Agents

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


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