Amoore J N
J Electrocardiol. 1985 Jan;18(1):71-5. doi: 10.1016/s0022-0736(85)80037-6.
A simple model study2 is used to compare the relative contributions to the surface ECG of the "Brody effect"1 and positional changes of the heart when the heart volume changes. In certain studies, such as exercise, it is the change in heart volume and its effect on the surface ECG which is of interest. This paper suggests that when the heart volume changes the extent to which it is accompanied by positional change will strongly influence the surface voltage change; the surface voltage may in fact increase or decrease with volume increase. This may explain some of the controversy surrounding the influence of volume change on the surface signal.
一项简单的模型研究2被用于比较“布罗迪效应”1和心脏体积变化时心脏位置改变对体表心电图的相对贡献。在某些研究中，如运动，人们感兴趣的是心脏体积的变化及其对体表心电图的影响。本文表明，当心脏体积发生变化时，其伴随的位置变化程度将强烈影响体表电压变化；实际上，体表电压可能会随着体积增加而升高或降低。这或许可以解释围绕体积变化对体表信号影响的一些争议。
