They may relate to abnormal electrical events at the margins between ischemic and adjacent normal regions of myocardium.

它们可能与心肌缺血区和邻近正常区边缘的异常电活动有关。

For one thing, says Dr Vollert, QST is best performed on a painful part of the body that can then be compared with a normal region.

Vollert 博士表示，一方面，QST 最好在身体疼痛的部位进行，然后与正常部位进行比较。