tokens: Cibenzoline suppressed all the arrhythmias , and the minimum effective plasma concentrations for arrhythmias induced by 24 - h coronary ligation , 48 - h coronary ligation , digitalis , and adrenaline were 1 . 9 + / - 0 . 9 ( by 8 mg / kg i . v . ) , 1 . 6 + / - 0 . 5 ( by 8 mg / kg i . v . ) , 0 . 6 + / - 0 . 2 ( by 2 mg / kg i . v . ) , and 3 . 5 + / - 1 . 3 ( by 5 mg / kg i . v . ) micrograms / ml , respectively ( mean + / - SDM , n = 6 - 7 ) .