As measured by ultrasonography of the antrum , half emptying times of the ethanol solutions ( 4 % , 10 % and 40 % v/v ) were significantly ( P < 0.05 ) longer ( 22.6 + / - 4.8 , 22.7 + / - 4.3 and 27.8 + / - 3.3 min , respectively , n = 10 ) than those of water ( 14.6 + / - 1.9 min ( 500 mL ) and 13.2 + / - 1.7 min ( 250 mL ) , respectively ) .
