Document Classification

Section Type: RESULTS

Text: In patients who received a DPPC dose of 607. 5 mg/d for 2 weeks, prebronchodilator forced expiratory volume in 1 second (FEV1) increased from 1. 22 L (SEM, 0. 08 L) at day 0 to 1. 33 L (SEM, 0. 09 L) at day 21 (P =. 05), an improvement of 11. 4 % ; postbronchodilator FEV1 improved 10. 4 % by days 14 and 21 (P =. 02) ; and the ratio of residual volume to total lung capacity, a measure of thoracic gas trapping, decreased 6. 2 % by day 21 (P =. 009).