食管电极导管使用次数与食管调搏起搏电压阈值的关系

Relationship between Using Frequency and Transesophageal Cardiac Electrophysiology Pacing Threshold Voltage of Esophageal Electrode Catheter

目的探讨食管电极导管的使用次数与食管调搏起搏电压阈值的关系。方法选取2012—2013年在重庆第三军医大学大坪医院行食管调搏检查的患者123例,比较采用新导管或曾使用过1-2次（A组）、3-4次（B组）、4次以上（C组）食管电极导管患者的起搏电压阈值。结果 A组患者的起搏电压阈值为（13.07±2.63）V,B组患者的起搏电压阈值为（17.15±2.60）V,C组患者的起搏电压阈值为（21.65±1.89）V,3组患者的起搏电压阈值间差异有统计学意义（F=147.019,P〈0.05）;其中B组起搏电压阈值高于A组,C组起搏电压阈值高于A、B组,差异均有统计学意义（P〈0.05）。结论食管电极导管重复使用3-4次以上时因电极表面钝化膜的形成导致起搏电压阈值增高,阻碍了该项技术在临床的推广与使用。

Objective To explore the relationship between the frequency of use of esophageal electrode catheter and transesophageal cardiac electrophysiology pacing threshold voltage. Methods A total of 123 patients who had esophageal pacing check during 2012- 2013 in Daping Hospital were enrolled in this study. This study compared the pacing thresholds in groups A（ having used for 1-2 times）,B（ having used for 3-4 times）,C（ having used for more than 4 times）. Results The average pacing threshold voltage was（ 13. 07 ± 2. 63） V in group A,（ 17. 15 ± 2. 60） V in group B,（ 21. 65 ± 1. 89） V in group C. The difference was significant（ F = 147. 019,P 〈0. 05）; and group B was higher than group A,group C was higher than group A,B（ P 〈0. 05）. Conclusion Esophageal electrode catheter will lead to the increase of pacing threshold due to passivation coating of surface of the electrode when it using for more than 3- 4 times,which hinders its promotion and use in clinical practice.