The effects of 0.1 mg, 0.25 mg, 0.50 mg, and 1.0 mg of nebulized furos
emide per kilogram of body weight on pulmonary functions were studied
in eight preterm infants with bronchopulmonary dysplasia who were supp
orted by mechanical ventilation, Doses of 1 mg/kg significantly improv
ed lung compliance (51% at 2 hours after nebulization), pulmonary resi
stance (28% at 1 hour), and tidal volume (43% at 1 hour), starting as
early as 30 minutes after the dose; the effect lasted for at least 4 h
ours in many of the infants and was not associated with diuresis or re
nal side effects.