the beta 2-adrenoceptor mediated effects on ventilatory capacity , forced expiratory volume in one second ( fev1 ) , forced ventilatory capacity ( fvc ) , heart rate , and skeletal muscle tremor of a new controlled-release ( cr ) formulation of metoprolol , 100 mg and 200 mg , and of atenolol tablets , 100 mg , were studied in eight asthmatic patients .
C0001643
beta 2-adrenoceptor
C0004096
asthmatic