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Chest, Vol 89, 484-490, Copyright © 1986 by American College of Chest Physicians
ARTICLES |
O Eliasson, J Hoffman, D Trueb, D Frederick and JR McCormick
A placebo-controlled, double-blind cross-over trial was conducted to assess whether 16 men with chronic obstructive pulmonary disease (COPD) would benefit from orally taken corticosteroids. Two weeks of treatment with 40 mg of prednisone daily did not result in improvement of pulmonary symptoms or function in the group as a whole, although one patient had small improvement in airflow. The baseline spirometric data and beta-agonist responsiveness of the patients in the study were then compared to a reference population consisting of 264 men who fulfilled a criteria for chronic obstruction out of 730 men who comprised a systematic sample drawn from all patients referred for spirometry at three hospitals. Our study subjects and those of five similar trials of corticosteroids in COPD had more severe obstruction than this reference group. Furthermore, the proportion of steroid responders found in each study was inversely related to the baseline FEV1 of the patients examined. It appears that previous studies of corticosteroids in COPD may have overestimated the number of COPD patients who might benefit from corticosteroids, due to a bias resulting from the selection of severely obstructed subjects.
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