Electrocardiographic changes after successful recanalization of a chronic total coronary occlusion. A systematic review and meta-analysis

This first systematic review and meta-analysis suggests that successful CTO PCI is associated with an immediate decrease in ECG parameters that reflect heterogeneity in depolarization and repolarization, which could lead to a reduction in the risk for ventricular arrhythmias and sudden cardiac death. We raise the hypothesis that hibernating myocardium in a CTO region may not be as deeply “in sleep” as one would assume.