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为寻找安全、高速的消融能源，在左室壁心肌内注射微量乌头碱的方法成功地诱发家兔室速。分别用准分子激光（３０８ｎｍ，重复频率２０Ｈｚ）经光纤耦合（单脉冲能量８～１０ｍＪ）在心外膜照射室速病灶，或经电极导管用直流电直接消融室速病灶，与对照组比较观察室速发作时间。结果表明：准分子激光对室速有确切疗效；与直流电消融相比，具有起效较慢，损坏心肌范围小，对血液动力学影响小等特点
In order to find a safe, high-speed ablation energy, intravenous injection of aconitine in the left ventricular myocardium successfully induced rabbit ventricular tachycardia. The ventricular tachycardia lesions were induced by epicardial irradiation with an excimer laser (308 nm, repetition frequency of 20 Hz) through optical fiber coupling (single pulse energy of 8 ~ 10 mJ), respectively, or ventricular catheter was directly ablated by direct current. Compared with the control group, Attack time. The results show that the excimer laser has an exact effect on ventricular tachycardia. Compared with DC ablation, the excimer laser has the characteristics of slower onset of action, less damage to the myocardium and less influence on hemodynamics