Evaluation of Bipolar, Tripolar, and Quadripolar Laplacian Estimates of Electrocardiogram via Concentric Ring Electrodes
Evaluation of Bipolar, Tripolar, and Quadripolar Laplacian Estimates of Electrocardiogram via Concentric Ring Electrodes
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DOI：
10.3390/s19173780
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发表时间：
2019-09-01
期刊：
影响因子：
3.9
通讯作者：
Makeyev, Oleksandr
中科院分区：
文献类型：
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作者：
Garcia-Casado, Javier;Ye-Lin, Yiyao;Makeyev, Oleksandr
与传统的圆盘电极相比，通过同心环电极（CREs）进行表面拉普拉斯估计可以提高空间分辨率，这对p波分析具有重要意义。在这项研究中，通过将五极cre放置在CMV1和CMV2位置的心脏记录，获得了传统双极构型（BC）、两种环间距离线性减小和增加的三极构型（分别为TCLDIRD和TCLIIRD）和四极构型（QC）的拉普拉斯估计。计算归一化p波振幅（NAP）来评估对比研究心房活动。信号质量良好（20- 30db）。与CMV2 （NAP相似或等于0.08-0.10）相比，CMV1 （NAP相似或等于0.19-0.24）的心房活动更为突出。TCLIIRD和QC提高了空间分辨率，NAP值高于BC和TCLDIRD。与同期标准12导联心电图的比较证明，CMV1的拉普拉斯估计在研究p波的对比中优于所有肢体和胸部标准导联。CRE在该位置的临床记录可以更详细地观察心房活动，并有助于相关病理的诊断。此外，这种记录不需要在肢体上安装额外的电极，并且可以无线进行，因此它也应该适用于动态监测，例如使用心脏动态心电图监测仪。
Surface Laplacian estimates via concentric ring electrodes (CREs) have proven to enhance spatial resolution compared to conventional disc electrodes, which is of great importance for P-wave analysis. In this study, Laplacian estimates for traditional bipolar configuration (BC), two tripolar configurations with linearly decreasing and increasing inter-ring distances (TCLDIRD and TCLIIRD, respectively), and quadripolar configuration (QC) were obtained from cardiac recordings with pentapolar CREs placed at CMV1 and CMV2 positions. Normalized P-wave amplitude (NAP) was computed to assess the contrast to study atrial activity. Signals were of good quality (20-30 dB). Atrial activity was more emphasized at CMV1 (NAP similar or equal to 0.19-0.24) compared to CMV2 (NAP similar or equal to 0.08-0.10). Enhanced spatial resolution of TCLIIRD and QC resulted in higher NAP values than BC and TCLDIRD. Comparison with simultaneous standard 12-lead ECG proved that Laplacian estimates at CMV1 outperformed all the limb and chest standard leads in the contrast to study P-waves. Clinical recordings with CRE at this position could allow more detailed observation of atrial activity and facilitate the diagnosis of associated pathologies. Furthermore, such recordings would not require additional electrodes on limbs and could be performed wirelessly, so it should also be suitable for ambulatory monitoring, for example, using cardiac Holter monitors.