To investigate the efficacy and safety of emergency drug in the treatment of patients with paroxysmal supraventricular tachycardia (PSVT).

A retrospective analysis were made for 136 cases of PSVT patients treated in emergency department of our hospital from August 1998 to June 2016. Vital signs(such as blood pressure, pluse, etc), electrocardiogram, heart zymogram, liver and kidney function of these patients were analyzed.

The successful rate of Verapamil in 136 cases was 75% (78/104). The successful rate of Propafenone was 88% (30/34), and 16 cases were resuced successfully with Meta hydroxylamine. There were no death cases. However, 3 cases of PSVT who were above 70 years of age were found to have persistent bradycardia after cardioversion, and the diagnosis of sick sinus syndrome (SSS) was confirmed.

Drug cardioversion for PSVT is still a main cardioversion way in emergency department (especially primary hospital), including Verapamil and Propafenone with higher sucessful rate. ATP can be used as the final choice for ineffective cases, but should be prepared for resuscitation and be used with caution.The hypotension, even blood pressure can't be measured, is effective in the use of Meta hydroxylamine. For PSVT patients over 70 years of age, drug cardioversion should be prudent. When the drug cardioversion is invalid or the drug is contraindicated, the direct cardioversion should be performed.