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  • Title: [Influence of the combination of theophylline and beta 2 agonists by oral route on pulmonary function of patients with chronic obstructive lung disease].
    Author: Carvalho-Pinto RM, Terra Filho M, Cukier A, Santos SR, Verrastro C, Teixeira LR, Vargas FS.
    Journal: Rev Hosp Clin Fac Med Sao Paulo; 1991; 46(4):166-9. PubMed ID: 1843713.
    Abstract:
    The role of the concurrent use of theophylline and beta-adrenergic agents for relief of bronchial obstruction is controversial. For this reason, we studied the lung function of 9 patients with chronic obstructive pulmonary disease, whose ages ranged from 51 to 69 (average 60.6 +/- 6.6) years, after the oral administration of theophylline and theophylline plus salbutamol. After withdrawal of all bronchodilators for 24 hours, the basal values of forced vital capacity (FVC) and forced expiratory volume in one second (FEV1) were obtained. Oral slow release theophylline (600 mg/day) was then administered for 7 days, followed by 7 days of the concurrent use of the same dose of theophylline plus salbutamol (16 mg/day). Spirometry was reevaluated at the end of each week. Pretreatment FVC ranged from 0.85 to 2.57 (average 1.78 +/- 0.64) liters, FEV1 from 0.70 to 1.64 (average 1.15 +/- 0.30) liters and theophylline serum levels from 0.1 to 3.1 (average 1.81 +/- 1.01) micrograms/ml. At the end of the first week, FVC was 1.38 to 3.26 (average 2.03 +/- 0.65) liters, FEV1 0.85 to 1.73 (average, 1.40 +/- 0.29) liters and theophylline serum levels 8.1 to 21.0 (average 13.40 +/- 4.18) micrograms/ml. With the concurrent use of theophylline and salbutamol FVC ranged from 1.24 to 2.57 (average 1.90 +/- 0.50) liters and FEV1 from 0.96 to 1.90 (average 1.46 +/- 0.33) liters, values not statistically different from theophylline alone.
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