Nelson C V
J Electrocardiol. 1980 Oct;13(4):387-91. doi: 10.1016/s0022-0736(80)80092-6.
Theoretical and experimental model studies on the effects of intracardiac blood have indicated that voltages due to a radial dipole are smaller than have been found in in-vivo experiments. The possible reasons for these differences have been examined. It is concluded that the lungs may tend to increase voltages over the anterior and posterior thoracic walls because of a current-channeling effect. This effect depends on the direction of cardiac excitation relative to the lungs. Voltages on the lateral and postero-lateral sides of the thorax are reduced because of the relatively large mass of the lungs in these regions. Changes in intracardiac blood volume for a constant hematocrit have less effect than changes in hematocrit per se.
关于心内血液影响的理论和实验模型研究表明，径向偶极子产生的电压比体内实验中所发现的要小。已经对这些差异的可能原因进行了研究。得出的结论是，由于电流引导效应，肺部可能会使前胸壁和后胸壁的电压升高。这种效应取决于心脏兴奋相对于肺部的方向。由于这些区域肺部质量相对较大，胸部外侧和后外侧的电压会降低。在血细胞比容恒定的情况下，心内血容量的变化比血细胞比容本身的变化影响更小。
