tokens: The current data showed that pilocarpine significantly delayed onset of arrhythmias , decreased the time course of ventricular tachycardia and fibrillation , reduced arrhythmia score , and increased the survival time of arrhythmic rats and guinea pigs .[ Ca ( 2 +)]( i ) overload induced by aconitine or ouabain was reduced in isolated myocytes pretreated with pilocarpine .