TY - JOUR T1 - COmparative efficacy and safety of 4 randomized regimens to treat early pseudomonas aeruginosa infection in children with cystic fibrosis AU - Treggiari MM, Retsch-Bogart G, Mayer-Hamblett N, et al Y1 - 2011/09/01 N1 - 10.1001/archpediatrics.2011.136 JO - Archives of Pediatrics & Adolescent Medicine SP - 847 EP - 856 VL - 165 IS - 9 N2 - Objective  To investigate the efficacy and safety of 4 antipseudomonal treatments in children with cystic fibrosis with recently acquired Pseudomonas aeruginosa infection.Design  Randomized controlled trial.Setting  Multicenter trial in the United States.Participants  Three hundred four children with cystic fibrosis aged 1 to 12 years within 6 months of P aeruginosa detection.Interventions  Participants were randomized to 1 of 4 antibiotic regimens for 18 months (six 12-week quarters) between December 2004 and June 2009. Participants randomized to cycled therapy received tobramycin inhalation solution (300 mg twice a day) for 28 days, with oral ciprofloxacin (15-20 mg/kg twice a day) or oral placebo for 14 days every quarter, while participants randomized to culture-based therapy received the same treatments only during quarters with positive P aeruginosa cultures.Main Outcome Measures  The primary end points were time to pulmonary exacerbation requiring intravenous antibiotics and proportion of P aeruginosa –positive cultures.Results  The intention-to-treat analysis included 304 participants. There was no interaction between treatments. There were no statistically significant differences in exacerbation rates between cycled and culture-based groups (hazard ratio, 0.95; 95% confidence interval [CI], 0.54-1.66) or ciprofloxacin and placebo (hazard ratio, 1.45; 95% CI, 0.82-2.54). The odds ratios of P aeruginosa– positive culture comparing the cycled vs culture-based group were 0.78 (95% CI, 0.49-1.23) and 1.10 (95% CI, 0.71-1.71) comparing ciprofloxacin vs placebo. Adverse events were similar across groups.Conclusions  No difference in the rate of exacerbation or prevalence of P aeruginosa positivity was detected between cycled and culture-based therapies. Adding ciprofloxacin produced no benefits.Trial Registration  ClinicalTrials.gov Identifier: NCT00097773. SN - 1072-4710 M3 - doi: 10.1001/archpediatrics.2011.136 UR - http://dx.doi.org/10.1001/archpediatrics.2011.136 ER -