Pelov R, Popiliev I
Vutr Boles. 1986;25(2):44-9.
The effect of deep breathing and shifting of the electrodes along the horizontal line was followed up in four orthogonal ECG systems. The duration of P wave did not change during deep breathing. The amplitude of P wave increased in the traditional ECG, simulating right atrial loading in the traditional ECG. The amplitude of Px decreased in OECG but it cannot lead to diagnostic difficulties. With the shifting of the electrodes (within the involuntary errors) OECG systems of McFee--Parungao and SVEK III are not liable to shifting of the electrodes and that of Frank shows an increase of the amplitude of the negative part of P z as in right-atrial loading.
在四个正交心电图系统中对深呼吸以及电极沿水平线移动的影响进行了追踪研究。深呼吸时P波持续时间未发生改变。在传统心电图中P波振幅增加，类似于传统心电图中的右心房负荷增加。在正交心电图（OECG）中Px波振幅降低，但这不会导致诊断困难。随着电极移动（在非人为误差范围内），麦克菲 - 帕伦高（McFee--Parungao）和SVEK III的OECG系统不易受电极移动影响，而弗兰克（Frank）系统显示Pz波负向部分振幅增加，如同右心房负荷增加时的情况。
