Abstract
Intravenous (IV) antibiotics are a mainstay of therapy in children with cystic fibrosis. It is unclear, however, over what period associated improvements in pulmonary function are maintained, and to what extent the underlying inflammatory process is impeded in children admitted for a course of IV antibiotics. This was a prospective, interventional study of 14 children (median age, 14 years; interquartile range, 10-14) with cystic fibrosis who were regular sputum producers and who required admission for a 2-week course of IV antibiotics. Children performed spirometry and provided a sputum sample prior to starting IV antibiotics and then weekly for 6 weeks, the first 2 weeks of which IV antibiotics were given. Sputum IL-8, TNF-alpha, IL-6, IL-10, MIP1-alpha, and elastase were measured. Seven children were asked to repeat the protocol in a subsequent exacerbation to assess similarities in response to therapy. Significant improvements were seen in forced expired volume in 1 sec (FEV(1)) in association with IV antibiotics (27% relative improvement in predicted from baseline to end of week 1, median FEV(1) 41.3% increasing to 52.2%), but this continued only 1 week following cessation of antibiotics. Although IL-8 demonstrated a trend...Continue Reading
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