Forty patients ( forced expiratory volume in 1 s [ FEV1 ] : 1.15 + / - 0.43 L ; 36 + / - 12 percent predicted ) received metered dose inhaler and 40 others ( FEV1 : 1.08 + / - 0.52 L ; 35 + / - 16 percent predicted ) received wet nebulization .
