心外膜MAP和活体电生理研究中记录的双极电图分析。左面板显示了单个VT动物指示部位的APD90。灰色区域是梗死瘢痕。红色虚线圈是映射VT电路的位置。右图显示MAP记录,说明起搏周期长度突然缩短时的反应。对快速刺激反应的异质性发生在传导延迟或阻滞的部位(橙色圆圈)与持续传导的部位(红色框)相邻。b无vt动物的类似图谱显示,在起搏速率突变的情况下,apd更加均匀,传导均匀。c比较APD和双极电图宽度的汇总数据。对VT动物的分析包括四个相邻的心电图,分别来自VT位置(正方形)和梗死瘢痕对面的VT位置(三角形)。在无VT动物(圈)中,我们使用了四个相邻的电图,这些电图来自解剖上与VT动物的VT部位相匹配的部位。 n = 10 biologically independent animals in the VT group, five biologically independent animals in the no-VT group, and five biologically independent animals in the validation cohort. Data are reported as mean ± standard deviation. Data analysis included the Shapiro–Wilk test for normality followed by one-way ANOVA with the post-hoc Tukey test to assess differences. Source data are provided as a Source Data file. Credit: DOI: 10.1038/s41467-022-28418-1