应用经食道心房调搏技术鉴别Mahaim纤维  

Transesophageal atrial pacing distinguishes Mahaim fibers

作　　者：石铭宇[1] 谷宏越[1] 梁兆光[1] 曲秀芬[1] 郑蕾[1] 

机构地区：[1]哈尔滨医科大学第一临床学院心内科,黑龙江哈尔滨150001

出　　处：《心脏杂志》2012年第2期222-226,共5页Chinese Heart Journal

摘　　要：目的:通过食道心房调搏技术鉴别Mahaim纤维。方法:回顾性分析53例旁道具有前传功能患者的食道电生理检查。其中Mahaim纤维组7例,Kent氏束组46例,对比两组的经食道心房起搏后S-R间期、旁道递减功能(ΔS-R)、旁道不应期(AP-ERP)、及心动过速发作特点。结果:在经食道心房调搏检查中,S1S1起搏时Mahaim纤维组S-R间期较Kent氏束组长[(71±20)ms vs.(28±14)ms,P<0.05];Mahaim纤维组可见ΔS-R[(103±28)msvs.(12±11)ms,P<0.01);两者的AP-ERP无显著差异。Mahaim纤维组7例均诱发出宽QRS波心动过速,Kent氏束组3例为宽QRS波心动过速。结论:应用经食道心房调搏可鉴别Mahaim纤维。AIM： To distinguish Mahaim fibers by transesophageal atrial pacing. METHODS： Fifty three patients were divided into Mahaim group （n = 7） and Kent group （n = 46）. The interval of stimulus to QRS wave （S-R）, accessory pathway progressive decrease conduction （AS-R）, accessory pathway effective refractory period （ERP）, and characteristics of tachycardia were examined by transesophageal atrial pacing. RESULTS： S-R in Mahaim group was longer than that in Kent group （71 ± 20） msec vs. （28 ± 14） msec （ P 〈 0. 05 ）, AS-R in Mahaim group and Kent group was, respectively, （ 103 28 ） msec and （ 12 ± 11 ） msec （P 〈 0.01 ）. No statistical difference was observed in ERP between groups. CONCLUSION： Transesophageal atrial pacing could be used to distinguish Mahaim fibers.

关 键 词：经食道心房调搏 MAHAIM纤维 心动过速 宽QRS波 

分 类 号：R541.71[医药卫生—心血管疾病]