摘要
目的研究适用于心外膜现场(实时)标测的方法,了解除极波的传播规律与路径。方法将柔性标测电极贴靠在心外膜上,分别在窦性心律和心房颤动(简称房颤)时对左右心房,左右心室等部位进行单极和双极复合标测,同步采集多路数据,现场观察动态等电位图以了解除极波传导的过程。最后计算相邻位点除极波信号的相关系数。结果在窦性心律时,各导联数据具有很强的相关性,可达0.8以上;而房颤时各导联数据的相关性明显降低,多数仅为0.5左右。结论采用单双极复合标测能提高电极的利用率和标测精度。对标测区域内房颤数据进行相关性分析,可了解除极波传播或折返的路径。
Objective To find a method for real-time measurement of epicardial electrical activity suitable for clinical application. Method Combined unipolar and bipolar mapping technique for recording epicardial electrical activity was applied to detect the propagation of depolarization wave over the epicardium. Epicardial signals from 4 pigs were sampled simultaneously during sinus rhythm or atrial fibrillation （AF）. Result Active isopotential map showing the spread of excitation on epicardial surface was demonstrated and correlation analysis data were obtained. The difference in correlation coefficients between adjacent sites was evident during sinus rhythm （above 0.8） and AF （about 0.5）. Conclusion The result shows that combined unipolar and bipolar technique improves the electrode efficiency and the precision in epicardial mapping. Distribution of depolarization wave or the reentry pathway during complex arrhythmia may be revealed by correlation analysis.
出处
《航天医学与医学工程》
CAS
CSCD
北大核心
2006年第2期116-119,共4页
Space Medicine & Medical Engineering
基金
国家自然科学基金(30400102)
教育部博士点基金(20030246025)
关键词
心外膜标测
除极
房颤
电极
相关分析
epicardial mapping
depolarization
atrial fibrillation
electrodes
correlation analysis
