体表逐搏检测希氏束电位技术的研究

目的探讨用无创方法检测希氏束电位。方法使用极低噪声3通道高增益放大器。16位A／D转换，通过USB接口与微机连接，采用模式识别和数字滤波联用软件对微信号进行处理。结果30例患者体表逐搏检测与心内导管电极记录进行对照，所有患者用逐搏体表希氏束检测仪清晰地记录到心房与心室之间的希氏束电活动，即A波、H波V波，二种记录方法获得的参数基本一致。结论无创体表逐搏检测希氏束电活动有广泛临床价值，对心脏电生理研究和对房室传导阻滞的诊断有高度实用性。

New breakthrough in beat to beat surface recording of his bundle potential

Objective To evaluate a noninvasive method which has been applied on human subjects to observe beat to beat activity of the His bundle potential. Methods Recording was performed with very low noise, high gain amplifiers and by analog filtering. 3-brigade amplifiers and 16-bite A/D were connected to a microcomputer by USB. The signal was processed by a combined pattern recognition and digital filtering software. Results The results of surface monitoring were compared with intracardiac method in 30 patients. The results of non-invasive method were consistent with that interventional method. A prominent waveform was observed between the atrial and ventricular complexes (A, H, V waves), and corresponded to His bundle activity in all patients. Conclusion The noninvasive method of beat to beat surface recording of His bundle activity has broad clinical applicability and high utility for the patients with latent A-V block and eletrophysiologic study.