the authors compared the bronchodilator effect of nebulized solutions of sodium cromoglycate ( scg ) , salbutamol , and saline ( placebo ) in 10 asthmatic children , measuring peak expiratory flow ( pef ) , forced vital capacity ( fvc ) , forced expiratory volume in one second ( fev1 ) and forced expiratory flow from 25 % to 75 % of the forced vital capacity ( fef25 % -75 % ) before and every five minutes to a maximum of 20 minutes after each aerosol .
C0012694
sodium
C0004096
asthmatic