• T Shimizu, H Mochizuki, A Morikawa, and T Kuroume.
• Department of Pediatrics, Gunma University School of Medicine, Japan.
• Chest. 1993 Dec 1;104(6):1723-6.

AbstractTo determine whether inhaled furosemide can modify the bronchoconstriction induced by ultrasonically nebulized distilled water (UNDW) in children with both atopic and nonatopic asthma, a single-blind, randomized, placebo-controlled study was undertaken. The UNDW inhalation challenge was performed in 21 asthmatic children (atopic, 14; nonatopic, 7; mean +/- SEM age, 11.5 +/- 0.5 years), who had a fall in FEV1 of at least 20 percent after distilled water inhalation. On separate days, these subjects underwent UNDW challenge test after inhalation of furosemide (10 mg/body square meters) or placebo (saline solution). Inhaled furosemide exerted a protective effect against bronchoconstriction induced by UNDW in children with both atopic and nonatopic asthma (p < 0.01, p < 0.05, respectively). These results indicate that the protective action of furosemide against UNDW-induced bronchoconstriction may be independent of its direct inhibitory effect on airway mast cell activation.

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