Daisuke Sato

This study shows that increased QT interval variability (QTV) can precede early afterdepolarizations (EADs) due to intrinsic dynamical instability in cardiac cells, offering an early warning signal for arrhythmia risk.

This study uses mathematical models to show that fibroblast density has a biphasic effect on drug-induced arrhythmias, increasing PVC susceptibility at moderate levels but reducing it at high levels.