Role of antimicrobial therapy in acute exacerbations of chronic obstructive pulmonary disease
Abstract
OBJECTIVE: To define the role of antimicrobial therapy in the treatment of acute bronchitic exacerbations of chronic obstructive pulmonary disease (COPD) through review of placebo-controlled clinical trials. Specificalty, to determine the benefit of antimicrobial therapy on patient outcome.
DATA SOURCES: Placebo-controlled dinical trials identified by MEDLINE search (1957-December 1999).
STUDY SELECTION AND DATA EXTRACTION: All placebo-controlled clinical trials that included COPD patients with no evidence of pneumonia or underlying asthma were included in the evaluation.
DATA SYNTHESIS: The role of antimicrobial agents in the treatment of acute exacerbations of COPD is controversial. Patients with COPD are often chronically colonized with bacteria, and many exacerbations are due to nonbacterial causes. Four placebo-controlled clinical trials and a meta-analysis have demonstrated significant improvements in outcome for patients treated with an antibiotic versus placebo. In contrast, six studies failed to demonstrate statistical differences, possibly due to the small sample size and the subjectivity of outcome measures. Overall, the data suggest that the benefit of antimicrobial therapy in acute exacerbations of COPD may be related to exacerbation severity.
CONCLUSIONS: Antimicrobial agents may have a beneficial effect in the treatment of acute exacerbations of COPD in certain patients. Pending further research in this area, we recommend antimicrobial therapy only for COPD…
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