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Observational study of inhaled corticosteroids on outcomes for COPD patients with pneumonia.

Chen D, Restrepo MI, Fine MJ, Pugh MJ, Anzueto A, Metersky ML, Nakashima B, Good C, Mortensen EM. Observational study of inhaled corticosteroids on outcomes for COPD patients with pneumonia. American journal of respiratory and critical care medicine. 2011 Aug 1; 184(3):312-6.

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RATIONALE: Treatment with inhaled corticosteroids (ICS) for those with chronic obstructive pulmonary disease (COPD) has been shown to be associated with an increased incidence of pneumonia. However, it is unclear if this is associated with increased mortality. OBJECTIVES: The aim of this study was to examine the effects of prior use of ICS on clinical outcomes for patients with COPD hospitalized with pneumonia. METHODS: We conducted a retrospective cohort study using the national administrative databases of the Department of Veterans Affairs. Eligible patients had a preexisting diagnosis of COPD, had a discharge diagnosis of pneumonia, and received treatment with one or more appropriate pulmonary medications before hospitalization. Outcomes included mortality, use of invasive mechanical ventilation, and vasopressor use. MEASUREMENTS AND MAIN RESULTS: There were 15,768 patients (8,271 with use of ICS and 7,497 with no use of ICS) with COPD who were hospitalized for pneumonia. There was also a significant difference for 90-day mortality (ICS 17.3% vs. no ICS 22.8%; P < 0.001). Multilevel regression analyses demonstrated that prior receipt of ICS was associated with decreased mortality at 30 days (odds ratio [OR] 0.80; 95% confidence interval [CI], 0.72-0.89) and 90 days (OR 0.78; 95% CI, 0.72-0.85), and decreased use of mechanical ventilation (OR 0.83; 95% CI, 0.72-0.94). There was no significant association between receipt of ICS and vasopressor use (OR 0.88; 95% CI, 0.74-1.04). CONCLUSIONS: For patients with COPD, prior use of ICS is independently associated with decreased risk of short-term mortality and use of mechanical ventilation after hospitalization for pneumonia.

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