非接触标测在伴有晕厥的右室流出道室性心动过速消融中的应用

目的比较非接触标测与传统导管方法对伴有晕厥的右室流出道室性心动过速消融的疗效和安全性。方法入选经心电图或24 h动态心电图证实为右室流出道室性心动过速且伴晕厥的住院患者共29例,应用非接触式球囊标测系统进行消融组10例,采用传统标测方法进行导管射频消融的对照组19例。结果两组手术消融的即刻成功率均为100%,但非接触标测组消融的部位减少(3.3±2.1)个比(5.6±3.1)个,P0.05],手术时间(73.4±34.6)min比(129.6±56.9)min,P0.05]、X线曝光时间(13.2±7.8)min比(24.4±19.7)min,P0.05]缩短,且并发症发生率及6个月随访的复发率有降低趋势。结论应用非接触标测系统指导消融伴晕厥的右室流出道室性心动过速比常规消融更可靠、省时和安全。

Application of non-contact mapping system in catheter ablation for right ventricular outflow tract ventricular tachycardia will syncope

Objective To compare the effect and safety of catheter ablation for fight ventricular outflow tract ventficular taehyeardia with syncope between non-contract mapping system （NMS） and conventional approach. Methods A lot of 29 patients with fight ventricular outflow tract （ RVOT）/ventfieular taehyeardia （VT） and syncope, 10 patients adopted non-contract mapping system, 19 patients adopted conventional approach. Results The immediate successful rates were 100% in 2 groups, but compared with conventional approach group, the ablating points were less （3.3 ±2. 1 ） vs. （ 5.6 ± 3. 1 ）, P 〈 0. 05 ], the procedure time was shorter （ 73.4± 34. 6 ） min vs. （ 129. 6 ± 56.9 ）min, P 〈 0.05 ], the X-ray exposure time was shorter （ 13.2 ± 7.8 ） min vs. （24. 4 ±19.7 ） min,P 〈 0.05 ] and the rates of complications and recurrence were lower in the NMS group. Conclusions Compared with conventional approach group, the NMS is more reliable, more timesaving and safer in ablation RVOT-VT.