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2015 ; 5
(1
): 30
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Trends in use and impact on outcome of empiric antibiotic therapy and
non-invasive ventilation in COPD patients with acute exacerbation
#MMPMID26429357
Ouanes I
; Ouanes-Besbes L
; Ben Abdallah S
; Dachraoui F
; Abroug F
Ann Intensive Care
2015[Dec]; 5
(1
): 30
PMID26429357
show ga
BACKGROUND: Empiric antibiotic therapy is routinely prescribed in patients with
acute COPD exacerbations (AECOPD) requiring ventilatory support on the basis of
studies including patients conventionally ventilated. Whether this practice
remains valid to current management with first-line non-invasive ventilation
(NIV) is unclear. METHODS: In a cohort of ICU patients admitted between 2000 and
2012 for AECOPD, we analyzed the trends in empiric antibiotic therapy and in
primary ventilatory support strategy, and their respective impact on patients'
outcome. RESULTS: 440 patients admitted for 552 episodes were included; primary
NIV use increased from 29 to 96.7 % (p < 0.001), whereas NIV failure rate
decreased significantly (p = 0.004). In parallel, ventilator-associated pneumonia
(VAP) rate, VAP density and empiric antibiotic therapy use decreased (p = 0.037,
p = 0.002, and p < 0.001, respectively). These figures were associated with a
trend toward lower ICU mortality rate (p = 0.058). Logistic regression showed
that primary NIV use per se was protective against fatal outcome [odds ratios
(OR) = 0.08, 95 %CI 0.03-0.22; p < 0.001], whereas NIV failure, VAP occurrence,
and cardiovascular comorbidities were associated with increased ICU mortality
[OR = 17.6 (95 %CI 5.29-58.93), 11.5 (95 %CI 5.17-25.45), and 3 (95 %CI
1.37-6.63), respectively]. Empiric antibiotic therapy was associated with
decreased VAP rate (log rank; p < 0.001), but had no effect on mortality (log
rank; p = 0.793). CONCLUSIONS: The sustained increase in NIV use allowed a
decrease in empiric antibiotic prescriptions in AECOPD requiring ventilatory
support. Primary NIV use and its success, but not empiric antibiotic therapy,
were associated with a favorable impact on patients' outcome.