Cystic Fibrosis Research Today is a free monthly online journal that collates and summarizes the latest research about Cystic Fibrosis, including details on symptoms, genetics, treatment, information. | ||||||||
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Long-term azitromycin treatment of cystic fibrosis patients with chronic Pseudomonas aeruginosa infection; an observational cohort study.Hansen CR, Pressler T, Koch C, Høiby N Cystic Fibrosis Center, 5003, Department of Pediatrics, Juliane Marie Center, Rigshospitalet, Blegdamsvej 9, DK-2100 København Ø, Denmark. christunte@hotmail.com BACKGROUND: In cystic fibrosis (CF), chronic endobronchial infection with Pseudomonas aeruginosa is a serious complication. Macrolides can increase lung function and weight in patients, and reduce exacerbations. METHODS: In 2001, we introduced long-term, low-dose azithromycin (AZ) treatment as an integral part of our routine treatment of these patients. Our study is an observational cohort study of all CF patients with chronic P. aeruginosa infection in our CF center comparing clinical parameters of the patients 12 months prior to treatment with the same values during 12 months of treatment. RESULTS: 45 patients (27 men, median age 29 years) completed 1-year treatment. Median weight increased from 63.1 kg in the pre-treatment period to 63.9 kg during treatment (p=0.01). Median slope of decline in lung function increased from pre-treatment FEV1 -4.1% and FVC -3.0% to +0.8% (p<0.001) and +1.6% (p=0.01), respectively. 90% of sputum samples contained mucoid P. aeruginosa before treatment, decreasing to 81% during treatment (p=0.003). Median CRP decreased from 6.2 mmol/l to 5.8 mmol/l (ns). CONCLUSION: Long-term, low-dose AZ treatment in adult CF patients with chronic P. aeruginosa infection is safe and reduces the decline in lung function, increases weight, and reduces the percentage of mucoid strains of P. aeruginosa in sputum samples. Published 8 March 2005 in J Cyst Fibros, 4(1): 35-40.
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