PT - JOURNAL ARTICLE AU - M. Khalid AU - A. Al Saghir AU - S. Saleemi AU - S. Al Dammas AU - M. Zeitouni AU - A. Al Mobeireek AU - N. Chaudhry AU - E. Sahovic TI - Azithromycin in bronchiolitis obliterans complicating bone marrow transplantation: a preliminary study AID - 10.1183/09031936.05.00020804 DP - 2005 Mar 01 TA - European Respiratory Journal PG - 490--493 VI - 25 IP - 3 4099 - http://erj.ersjournals.com/content/25/3/490.short 4100 - http://erj.ersjournals.com/content/25/3/490.full SO - Eur Respir J2005 Mar 01; 25 AB - Bronchiolitis obliterans (BO) is a serious noninfectious pulmonary complication following allogeneic bone marrow transplantation (BMT). Azithromycin, a macrolide antibiotic, may have a beneficial effect in BO through its anti-inflammatory effect. The aim of the current study was to investigate the potential effect of azithromycin on pulmonary function tests (PFTs) in BO complicating BMT. PFTs of 153 post-BMT patients were followed; eight patients out of 153 (12%) developed obstructive airway disease on their PFTs, along with characteristic findings of BO on high-resolution computed tomography of the chest. These patients were given azithromycin 500 mg q.d. for 3 days, followed by 250 mg three times a week for 12 weeks. Clinically significant improvements were achieved both in forced vital capacity, where the mean (95% confidence interval) increase reported was 410 mL (0.16–0.65), which was an average improvement of 21.57%, and in the forced expiratory volume in one second, where the mean increase noticed was 280 mL (0.10–0.44), which was an average improvement of 20.58%. In conclusion, the potential role of azithromycin in the treatment of bronchiolitis obliterans is intriguing and it warrants further testing.