Study design (if review, criteria of inclusion for studies)
double blind, randomized cross over study.
Participants
9 CF-patients chronically infected with P. aeruginosa
Interventions
On two visits to the outpatient clinic, patients were submitted to either nebulized colistin sulphate or colistin sulphomethate solution.
Outcome measures
Lung function tests were performed immediately before and 15 and 30 min after nebulization.
Main results
Nebulization of colistin sulphate caused a significant larger mean decrease in lung function compared to nebulized colistin sulphomethate. A significant decrease in mean changes (SD) in FEV1 at 30 min and FVC at 15 and 30 min after nebulization compared to baseline of -7.3% (8.6%), -5.7% (7.3%) and -8.4% (7.5%) respectively was seen after colistin sulphate nebulization compared to colistin sulphomethate (P < 0.05). Seven patients were not able to complete the nebulization of colistin sulphate because of throat irritation and severe cough.
Authors' conclusions
Based on these results it was concluded that inhalation with nebulized colistin sulphate is not suitable for treatment of CF patients chronically infected with P. aeruginosa. Colistin sulphomethate is the drug of choice for pulmonary administration of colistin.