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Cross-over study of the efficacy of four beta 2-sympathomimetic bronchodilator aerosols.
Metadata
Journalbritish journal of clinical pharmacology3.74Date
1979-Jul
Type
Journal Article
Trial
Trial
Volume
1979-Jul / 8 : 75-82
Author
Madsen BW , Tandon MK , Paterson JW
DoiPMIDMESH
Adrenergic beta-Agonists
Adult
Aerosols
Aged
Airway Obstruction
Albuterol
Analysis of Variance
Bronchitis
Bronchodilator Agents
Clinical Trials as Topic
Double-Blind Method
Female
Fenoterol
Forced Expiratory Volume
Humans
Male
Metaproterenol
Middle Aged
Terbutaline
Vital Capacity
Abstract
1 Bronchodilator efficacy of four beta 2-sympathomimetic aerosols, fenoterol, orciprenaline, salbutamol and terbutaline has been compared in nine patients with chronic stable reversible airways obstruction using a double-blind placebo controlled cross-over design. Two puffs of each agent were given on two separate occasions to each of the patients and the forced expiratory volume in one second (FEV1) and the vital capacity (VC) were measured before and 30, 90, 150 and 210 min after administration. 2 Multivariate analysis of the data at 30 min showed FEV1 and VC in these patients to be so highly correlated that they could be considered as a single variable. 3 When absolute change in VC at 30 min was used as the response criterion, efficacy of the four drugs was significantly better than placebo (P < 0.01). It was not possible to rank all four drugs in order of effectiveness; fenoterol and salbutamol were significantly better than terbutaline and orciprenaline (P < 0.01) but this was complicated by a significant interaction effect between drugs and patients (P < 0.01). 4 Similar results were obtained when absolute and relative changes in FEV1 and VC and area under the curve were used as response variables. 5 The study demonstrates that important individual differences in patient response may be concealed if only average drug effects are considered.
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3.7
Br J Clin Pharmacolbritish journal of clinical pharmacology
Metadata
LocationEngland
FromWILEY

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