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  • Title: Theophylline in stable chronic airflow obstruction. A reappraisal.
    Author: Dull WL, Alexander MR.
    Journal: Arch Intern Med; 1984 Dec; 144(12):2399-401. PubMed ID: 6391407.
    Abstract:
    Theophylline is commonly recommended for patients who have stable chronic airflow obstruction (CAO). Recent evidence confirms that serum theophylline concentrations between 10 and 20 mg/L may increase forced expiratory volume in 1 s (FEV1) and forced vital capacity in these patients. Exercise tolerance, however, and the classic respiratory symptoms of wheezing, breathlessness, cough, and sense of well-being do not improve. A reappraisal of the role of this medication in patients with stable CAO is therefore necessary; we recommend not prescribing this medication for all patients. Instead, the response of FEV1 after isoproterenol inhalation (0.15 mg) should be monitored. This simple test has good efficacy for predicting the response to oral theophylline therapy and could diminish the cost and unnecessary side effects of theophylline while benefiting those who will respond.
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