Cross-over study of the efficacy of four beta 2-sympathomimetic bronchodilator aerosols

British Journal of Clinical Pharmacology
B W MadsenJ W Paterson

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 demonstrate...Continue Reading

References

Jan 1, 1989·European Journal of Clinical Pharmacology·C D BurgessG Purdie
Jan 1, 1990·Pharmacology & Therapeutics·R G GoldieK M Lulich
Feb 1, 1983·Thorax·M I UllahG J Addis
Feb 1, 1986·Australian Paediatric Journal·L I Landau
May 1, 1983·Clinical Pediatrics·P S KarofskyC S Clune
Apr 1, 1984·British Journal of Pharmacology·R G GoldieJ L Wale

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