MOTION ARTIFACT FROM SPOT AND BAND ELECTRODES DURING IMPEDANCE CARDIOGRAPHY
MOTION ARTIFACT FROM SPOT AND BAND ELECTRODES DURING IMPEDANCE CARDIOGRAPHY
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DOI：
10.1109/tbme.1986.325869
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发表时间：
1986-11-01
影响因子：
4.6
通讯作者：
TOMPKINS, WJ
中科院分区：
文献类型：
--
作者：
QU, MH;ZHANG, YJ;TOMPKINS, WJ
我们改进了阻抗心动图，在压力测试中监测心输出量。采用离线微型计算机，我们的仪器集成平均阻抗信号，以尽量减少运动伪影的影响。我们提出了一种新的四点电极阵列，并用它取代了通常的环带电极阵列。我们测试了10名正常受试者，并比较了我们的点电极阵列与典型带电极阵列在休息和在跑步机上运动四种水平时的信噪比（SNR）。在休息和四个水平的运动中，我们的点电极阵列的10个受试者的平均声噪比比带电极阵列的高13.6- 45.5%。因此，在运动对象的阻抗心电图中，用点电极代替带电极是可取的。
We have modified impedance cardiography for monitoring cardiac output during stress tests. Employing an off-line microcomputer, our instrument ensemble averaged impedance signals to minimize the effect of motion artifacts. We proposed a new four-spot electrode array and replaced the usual encircling band electrode array with it. We tested ten normal subjects and compared the signal-to-noise ratio (SNR) from our spot electrode array to that from a typical band electrode array at rest and during four levels of exercise on a treadmill. The average of the sighal-to-noise ratios for ten subjects from our spot electrode array was 13.6-45.5 percent larger than that from the band electrode array at rest and during four levels of exercise. Thus, it is desirable to replace band electrodes with spot electrodes in impedance cardiography for exercising subjects.