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Impact of ventilator-associated pneumonia on outcome in patients with COPD
Saad Nseir1, Christophe Di Pompeo, Stéphane Soubrier
1Intensive Care Unit, Calmette Hospital, Regional University Centre, Lille II University, France. s-nseir@chru-lille.fr
Purposes:
The aim of this study was to determine the impact of ventilator-associated pneumonia (VAP) on outcome in patients with COPD.
Methods:
Prospective, observational, case-control study conducted in a 30-bed ICU during a 5-year period. All COPD patients who required intubation and mechanical ventilation (MV) for > 48 h were eligible. VAP diagnosis was based on clinical, radiographic, and quantitative microbiologic criteria. Patients with unconfirmed VAP were excluded, as well as patients with ventilator-associated tracheobronchitis without subsequent VAP. Matching (1:1) criteria included MV duration before VAP occurrence, age +/- 5 years, simplified acute physiology score II on ICU admission +/- 5, and ICU admission category. Variables associated with ICU mortality were determined using univariate and multivariate analyses.
Results:
A total of 1,241 patients were eligible; 181 patients (14%) were excluded, including 133 patients for VAT and 48 patients for unconfirmed VAP. VAP developed in 77 patients (6%), and all were successfully matched. Pseudomonas aeruginosa was the most frequently isolated bacteria (31%). ICU mortality rate (64% vs 28%), duration of MV (24 +/- 15 d vs 13 +/- 11 d [+/- SD]), and ICU stay (26 +/- 17 d vs 15 +/- 13 d) were significantly (< 0.001) higher in case patients than in control patients. VAP was the only variable independently associated with ICU mortality (odds ratio [OR], 7.7; 95% confidence interval [CI], 3.2 to 18.6; p < 0.001). In VAP patients who received corticosteroids during their ICU stay compared with those who did not receive corticosteroids, mortality rate (50% vs 82%; OR, 1.8; 95% CI, 1.2 to 2.7; p = 0.002), duration of MV (21 +/- 14 d vs 27 +/- 16 d, p = 0.043), and ICU stay (22 +/- 16 d vs 31 +/- 18 d, p = 0.006) were significantly lower.
Conclusion:
VAP is associated with increased mortality rates and longer duration of MV and ICU stay in COPD patients.
Insights
Ventilator-associated pneumonia (VAP) significantly increases ICU mortality, mechanical ventilation duration, and hospital stay in patients with chronic obstructive pulmonary disease (COPD). Early VAP detection and management are crucial for improving patient outcomes.
Area of Science:
- Critical Care Medicine
- Pulmonology
- Infectious Diseases
Background:
- Chronic obstructive pulmonary disease (COPD) patients are at increased risk for respiratory infections.
- Ventilator-associated pneumonia (VAP) is a common complication in mechanically ventilated patients.
- The impact of VAP on outcomes in COPD patients requires further investigation.
Purpose of the Study:
- To determine the impact of ventilator-associated pneumonia (VAP) on outcomes in patients with COPD.
- To assess the association between VAP and ICU mortality, duration of mechanical ventilation, and ICU length of stay.
- To evaluate the effect of corticosteroid treatment on VAP outcomes in COPD patients.
Main Methods:
- Prospective, observational, case-control study over 5 years in a 30-bed ICU.
- Included COPD patients requiring mechanical ventilation (MV) for > 48 hours.
- VAP diagnosed using clinical, radiographic, and quantitative microbiologic criteria; matched 1:1 for MV duration, age, SAPS II, and ICU admission category.
Main Results:
- VAP developed in 6% of eligible COPD patients (n=77).
- VAP was independently associated with increased ICU mortality (OR, 7.7; p < 0.001).
- VAP patients experienced significantly longer MV duration and ICU stays compared to controls. Corticosteroid use in VAP patients was associated with lower mortality and shorter ICU stay.
Conclusions:
- VAP significantly increases mortality rates in COPD patients.
- VAP prolongs mechanical ventilation duration and ICU length of stay.
- Corticosteroid treatment may improve outcomes for COPD patients with VAP.
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