by administration of atropine ( 0.04 mg/kg , i.v . ) to 8 dogs , the duration of asystole after overdrive , at a rate of 1.5 times the spontaneous heart rate , decreased from 2.6 +/- 0.8 to 1.5 +/- 0.4 seconds .
C0004259
atropine
C0018790
asystole