Study design (if review, criteria of inclusion for studies)
Systematic review of RCTs
List of included studies (8)
Saiman 2010; Dogru 2009; Steinkamp 2008; Clement 2006; Rotschild 2005; Saiman 2003; Wolter 2002; Equi 2002
Participants
Patients with moderate to severe lung diseases associated with CF.
Interventions
Macrolides
Outcome measures
The primary efficacy outcome was the impact on the deterioration of lung function (changes in FEV1 and FVC). Safety outcomes included adverse events and mortality.
Main results
Eight RCTs (seven with azithromycin and one with clarithromycin) were found in the systematic review and six RCTs with azithromycin (654 patients) were included in the meta-analysis. Azithromycin treatment showed a significant increase in FEV1% (3.22%, 95% CIâ=â1.38â5.06, Pâ=â0.0006, I2â=â0%) and FVC% (3.23%, 95% CIâ=â1.62â4.85, Pâ<â0.0001, I2â=â0%) compared with placebo. In individuals with baseline Pseudomonas aeruginosa colonization, both FEV1% (4.80%, 95% CIâ=â1.66â7.94, Pâ=â0.003, I2â=â42%) and FVC% (4.74%, 95% CIâ=â1.92â7.57, Pâ=â0.001, I2â=â0%) increased significantly. The incidence rates of the main side effects (cough, headache, abdominal pain, vomiting, nausea and diarrhoea) were not significantly different between the azithromycin-treated group and the placebo group. The RCT of clarithromycin, involving 18 patients, showed its effects on clinical improvement; however, the small sample size made comparisons with azithromycin difficult.
Authors' conclusions
Conclusions Long-term use of azithromycin can improve lung function, especially for P. aeruginosa-colonized CF patients. There was no evidence of increased adverse events with azithromycin. More data are needed to verify the best azithromycin regimen and to evaluate other macrolides in CF patients.
Related topics
Antibiotic treatment for stenotrophomonas maltophilia in people with cystic fibrosis
Antibiotic treatment of early pseudomonas aeruginosa
Antibiotics for pulmonary exacerbations
Inhaled antibiotics in cystic fibrosis
Prophylactic use of oral antistaphylococcal antibiotic
Scheduled antibiotics every 3-4 months / symptom-based treatment