Aubert A E, Ector H, Denys B G, De Geest H
Pacing Clin Electrophysiol. 1986 May;9(3):343-59. doi: 10.1111/j.1540-8159.1986.tb04489.x.
We investigated wave morphology and spectral energy distributions of signals picked up by floating atrial unipolar and bipolar orthogonal sensing electrodes. Our data show that atrial P and QRS waves from unipolar floating electrodes are comparable. On the other hand, atrial P and QRS waves from bipolar orthogonal floating electrodes are significantly different. Even at high and mid right atrial locations, QRS waves are either absent or much smaller in amplitude and lower in frequency content than P waves. We conclude that the bipolar orthogonal floating atrial electrode is superior to the unipolar one for sensing due to its P to QRS wave discriminating power, which makes complex input filters or algorithms unnecessary. Our data support the idea that physiologic pacing with a VDD or VAT pacemaker is possible using a single pass lead.
我们研究了漂浮式心房单极和双极正交传感电极采集信号的波形形态和频谱能量分布。我们的数据表明，来自单极漂浮电极的心房P波和QRS波具有可比性。另一方面，来自双极正交漂浮电极的心房P波和QRS波存在显著差异。即使在右心房的高位和中位位置，QRS波要么缺失，要么振幅小得多，频率成分也低于P波。我们得出结论，双极正交漂浮心房电极在传感方面优于单极电极，因为它具有区分P波和QRS波的能力，无需复杂的输入滤波器或算法。我们的数据支持这样一种观点，即使用单根导线进行VDD或VAT起搏器的生理性起搏是可行的。
