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Title: A dose-finding study with the once-daily oral β<inf>2</inf>-agonist bambuterol in Asian children with asthma
Authors: A. R. Mendoza
M. Javier
J. Ngamphaiboon
D. Y.T. Goh
P. Vichyanond
C. B. Kartasasmita
M. S. Bautista
H. I. Boediman
O. M. Chay
A. H. Omar
C. Badcock
H. Olsson
St. Luke’s Medical Center
Philippine General Hospital
King Chulalongkorn Memorial Hospital, Faculty of Medicine Chulalongkorn University
Mahidol University
Universitas Padjadjaran
Philippine Heart Centre
University of Indonesia, RSUPN Dr. Cipto Mangunkusumo
Universiti Kebangsaan Malaysia
Astra Australia
AstraZeneca Sweden
Keywords: Medicine
Issue Date: 1-Jan-1999
Citation: Clinical Drug Investigation. Vol.18, No.5 (1999), 369-375
Abstract: Objective: The primary objective was to compare the efficacy of two dosages of bambuterol, a once-daily oral bronchodilator, with placebo in Asian children with asthma. The secondary objective was to assess the tolerability of bambuterol in this population. Design: This was a multicentre, randomised, double-blind, placebo-controlled crossover study, with a run-in period of 2 weeks. The study consisted of three treatment periods of 2 weeks each, separated by washout periods of 2 weeks, with 7 clinic visits in total. Setting: Outpatients were recruited from 10 centres in Indonesia, Malaysia, The Philippines, Singapore and Thailand. Patients: Seventy Asian children aged 6 to 12 years (53 boys and 17 girls) with asthma for at least 6 months were randomised to treatment, and 62 patients completed the study. Interventions: During the three treatment periods, patients received either placebo or 5 or 10 mg bambuterol tablets once daily for 2 weeks. Morning peak expiratory flow (PEF) was the primary efficacy variable. Secondary efficacy variables were forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC) and diary card data including evening PEF. Results: At baseline, FEV1predicted was 82.9% and the reversibility was 22.2%. The study results suggest that the change from baseline in both morning and evening PEF recorded on the diary cards on days 4 to 14 of each treatment period was dose dependent, but only the difference in morning PEF between bambuterol 10 mg and placebo was statistically significant (9.1 L/min; 95% confidence interval 0.2 to 18.0 L/min). FEV1, FVC, asthma symptom scores and the use of supplementary β2-agonists did not differ significantly between placebo and the two bambuterol treatments. Blood pressure and pulse rate remained consistent throughout the study. The number of spontaneously reported adverse events was similar for the three treatment groups. Conclusions: Bambuterol 10 mg once daily is an effective bronchodilator in 6- to 12-year-old Asian children in terms of improvement in morning PEF.
ISSN: 11732563
Appears in Collections:Scopus 1991-2000

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