摘要
应用高频心电图 (HFECG)观察 6 6例阵发性室上性心动过速患者射频消融 (RFCA)前、后的高频切迹(HFN)的变化 ,以了解 RFCA对心肌的损伤情况。结果显示 :1RFCA术后高频切迹 (HFN)显著增加 (9.6± 3.5 vs2 3.3± 6 .2 ,P<0 .0 1) ;2累计放电能量越高 ,放电次数越多 ,HFN增加越明显 (17.8± 5 .9vs12 .0± 5 .1,17.0± 5 .0vs 11.6± 5 .2 ,均为 P<0 .0 1) ;3心房放电组的累计放电能量和放电次数明显高于心室放电组 (1376 0± 85 72 Jvs2 988± 1371J,14.9± 12 .8次 vs 3.4± 2 .7次 ,均为 P<0 .0 1) ,而两组所造成的 HFN变化却无明显差异 (14.4± 5 .7vs 12 .0± 5 .6 ,P>0 .0 5 )。结论 :HFECG可以早期而敏感地反映 RFCA对心肌的损伤 ,影响心肌损伤程度的因素有累计放电能量、放电次数和放电部位。
To study myocardial injury after radiofrequency catheter ablation (RFCA),high frequency electrocardiogram (HFECG) was analysised in 66 patients undergoing RFCA. The result showed that high frequency notching (HFN) significantly increased after RFCA (9.6±3.5 vs 23.3±6.2, P <0.01); HFN of the group with more accumulated power and greater number of power release during RFCA was significantly greater than that of the group with less accumulated power and smaller number of power release (17.8±5.9 vs 12.0±5.1,17.0±5.0 vs 11.6±5.2, P <0.01,respectively). The accumulative power and the number of energy application in the atrium ablated group were significantly higher than those in the ventricle ablated group ( (13760±8572 J vs 2988±1371 J,14.9±12.8 vs 3.4±2.9, P <0.01,respectively), there was not any difference in the change of HFN between the two groups ((14.4±5.7 vs 12.0±5.6, P >0.05). These findings suggest that HFECG may sensitively monitor the myocardial injury induced by RFCA, and the level of myocardial injury was related to the accumulated power,the number of energy application and the position in RFCA.
出处
《心脏杂志》
CAS
2000年第1期23-24,共2页
Chinese Heart Journal
关键词
射频消融
心电描记术
高频
心肌损伤
cathetr ablation
radiofrequency current
electrocardiography,high frequency
myocardial injury
