Abstract:
:As previous studies have suggested that inhaled furosemide may have a protective effect against certain types of provocative challenges in asthmatic subjects, we investigated the role of furosemide in treating acute asthma exacerbations. Twenty-four patients (n = 24) with acute asthma were entered into the study on presenting to the emergency department. They were blindly randomized to receive one of three drug regimens: (1) inhaled furosemide (40 mg) (n = 8); (2) inhaled metaproterenol (15 mg) (n = 7); or (3) the combination of furosemide (40 mg) and metaproterenol (15 mg) (n = 9). We measured FEV1 at entry (time 0) and 15, 30, 45, and 60 min after inhalation of the individual drugs or the combination from a face mask nebulizer. At entry, the three groups did not differ significantly in age (mean +/- SEM = 37.6 +/- 3.6, 38.5 +/- 3.6, and 41.0 years, respectively; p = 0.770), baseline FEV1 (1.01 +/- 0.27, 1.04 +/- 0.27, and 1.25 +/- 0.14 L, respectively; p = 0.620), or theophylline levels (2.87 +/- 1.8, 7.39 +/- 2.8, and 5.29 +/- 2.6 micrograms/ml, respectively; p = 0.498). Pretreatment and posttreatment potassium levels were similar among the three groups. Inhalation of furosemide alone resulted in a 14.9 +/- 10.5 percent change in FEV1 percent from baseline, which was not statistically significant. In contrast, metaproterenol alone resulted in a 42.9 +/- 15.2 percent increase in FEV1 percent (F ratio = 6.226; p = 0.0028). The combination of furosemide and metaproterenol resulted in a change in FEV1 percent that was not statistically different compared with metaproterenol alone (FEV1 percent = 41.9 +/- 12 percent). No significant adverse effects occurred in any of the groups.
journal_name
Chestjournal_title
Chestauthors
Karpel JP,Dworkin F,Hager D,Feliciano S,Shapiro D,Posner L,Luks Ddoi
10.1378/chest.106.5.1396subject
Has Abstractpub_date
1994-11-01 00:00:00pages
1396-400issue
5eissn
0012-3692issn
1931-3543pii
S0012-3692(15)44329-6journal_volume
106pub_type
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