给药途径与剂量慢心律可由静脉、肌肉或口服途径给予。速给法为5分钟内静脉注射200～250毫克,继以1～1.5毫克/分滴注,约半小时达1毫克/升的血浆浓度,此法副作用出现率高,仅用于急症病例。缓给法为30分钟内缓慢静脉注射200～300毫克(10～15毫克/分),然后静脉滴注维持1毫克/分左右。经静脉一次给予上述剂量后,慢心律的平均半寿期为13.2小时。肌肉注射慢心律的疗效并不优于静脉 Routes of Administration and Dose Slow rhythm can be given intravenously, intramuscularly or orally. Intravenous injection of 200 ~ 250 mg within 5 minutes, followed by 1 ~ 1.5 mg / min infusion, about half an hour up to 1 mg / L of plasma concentration, the incidence of side effects of this method is high, only for emergency cases. Slow to give law for 30 minutes slowly intravenous injection of 200 to 300 mg (10 ~ 15 mg / min), and then maintain intravenous infusion of 1 mg / min or so. After a single intravenous dose, the mean half-life of the slow heart rate was 13.2 hours. The effect of intramuscular injection of slow rhythm is not superior to that of the vein