Plonsey R
J Electrocardiol. 1979 Oct;12(4):337-41. doi: 10.1016/s0022-0736(79)80001-1.
We have derived quantitative expressions for QRS, T, and QRST areas of the scalar electrocardiogram. The QRST area, or ventricular gradient, is seen to be essentially independent of the activation sequence and to reflect recovery properties of the tissue as weighted by the vector lead field of a given lead. The results are derived for uniform isotropic conditions and under the assumption that the temporal waveforms everywhere are identical except for possible variations in the duration of the plateau. However, it is noted that the results are, probably, valid under anisotropic conditions as well. The examination of ventricular gradients from epicardial and intramural leads should reflect local recovery properties and be a useful tool in study of the physiology of recovery, as well as the study of arrhythmias.
我们已经推导出了标量心电图的QRS、T和QRST面积的定量表达式。QRST面积，即心室梯度，被认为基本上与激活序列无关，并且反映了组织的恢复特性，这种特性由给定导联的矢量导联场加权。结果是在均匀各向同性条件下得出的，并假设除了平台期持续时间可能存在变化外，各处的时间波形都是相同的。然而，需要注意的是，这些结果可能在各向异性条件下也是有效的。对心外膜和心室内导联的心室梯度进行检查应能反映局部恢复特性，并且在恢复生理学研究以及心律失常研究中是一种有用的工具。
