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- W2059464008 abstract "The use of inhaled tobramycin for prophylaxis and treatment of respiratory symptoms in cystic fibrosis (CF) is now widespread. There have been concerns that inhaling the intravenous (I.V.) formulation of tobramycin causes bronchoconstriction. Previous studies using this formulation have either not specified the nebulizing equipment, or studied older, more severely affected patients. This study investigated the incidence of bronchoconstriction with tobramycin inhalation in children with mild to moderate CF. We studied 26 patients between the ages of 7 and 17 years, with mild to moderate CF (20 female). Prior to being placed on prolonged inhaled tobramycin therapy, they underwent a tobramycin challenge. FEV(1) was measured pre and post challenge. For the test, standard I.V. solution (80 mg/2 mL) diluted with 2 mL of normal saline was nebulized, using the Hudson (Temecula, CA) RCI Updraft II nebulizer. The nebulization lasted 2 min. There was a 3-min quiet period, following which FEV(1) was measured. A decrease in FEV(1) by at least 10% post-tobramycin inhalation was considered to be a positive test. Results were analyzed using the Pearson Chi-square test. Five of 26 (19%) had a positive reaction to tobramycin. Sixteen of 26 (61.5%) were using salbutamol on a daily basis at the time of testing but not for 48 hr before the challenge, and 16 of 26 (61.5%) had a pre-tobramycin FEV(1) of < or =80%. Neither an FEV(1) of <80% (P = 0.93) nor regular use of salbutamol (P = 0. 34) were associated with a positive tobramycin challenge. This study suggests that, while bronchoconstriction does occur, many patients do not exhibit bronchoconstriction in response to the standard I.V. preparation and, as prior work suggests, this may be reduced further by pretreatment with salbutamol." @default.
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- W2059464008 date "2000-05-01" @default.
- W2059464008 modified "2023-10-16" @default.
- W2059464008 title "Inhaled tobramycin and bronchial hyperactivity in cystic fibrosis" @default.
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- W2059464008 doi "https://doi.org/10.1002/(sici)1099-0496(200005)29:5<366::aid-ppul5>3.0.co;2-l" @default.
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