Conclusion
In this study, we found that ERP can affect subtle myocardial
dysfunction especially in IL wall and LV basal segment. This
relationship can be consistent with the K+ channel density and K+
channel distribution in LV myocardium. In addition, ERP can be
associated with more impaired longitudinal function than circumferential
function. We therefore propose that ERP not only can lead to ion channel
dysfunction but also result in myocardial dysfunction.