Clinical efficacy and safety of colistin treatment in patients with pulmonary infection caused by Pseudomonas aeruginosa or Acinetobacter baumannii: a meta-analysis

INTRODUCTION The aim of this study was to evaluate the efficacy and safety of colistin treatment in patients with pulmonary infection caused by Pseudomonas aeruginosa or Acinetobacter baumannii. MATERIAL AND METHODS The relevant studies were identified through a search of public databases including PubMed, MEDLINE and EMBASE up to December 2012. A meta-analysis was conducted to compare the clinical response, mortality and renal damage of colistin (colistin group) versus other effective antibiotics (control group). The odds ratio (OR) was chosen as the effect size. RESULTS A total of 9 studies were eventually identified. The result of the meta-analysis showed that the pooled OR of clinical response was 1.24 (95% CI = 0.68-2.27, p > 0.05) for patients in the colistin group versus the control group, indicating no significant difference in efficacy between colistin and control groups. Similar results were obtained by the further subgroup meta-analyses by sample size, research year, ethnicity and study method. Treatment with colistin versus other agents did not affect hospital mortality (OR = 1.05, 95% CI = 0.58-1.89, p > 0.05) or renal damage (OR = 1.25, 95% CI = 0.78-2.00, p > 0.05). The combined estimate of our analysis was strong across multiple sensitivity analyses and without significant publication bias. CONCLUSIONS Our results suggest that colistin may be as efficacious and safe as standard antibiotics for the treatment of pulmonary infection.