Fig. 2. Baseline forced expiratory volume in 1 s (FEV1) on each day compared with inhalation of placebo (A ), 4% lidocaine (B ), 1% ropivacaine (C ), and 1% dyclonine (D ). Each pair of symbols represents the response of one volunteer. Mean values ± SD are presented to the left and right of the individual data. Both ropivacaine and dyclonine led to a significant decrease of FEV1. * P < 0.05.
