Does an open infarct-related artery after myocardial infarction improve electrical stability?

Arrhythmic events are responsible for the majority of sudden cardiac deaths after myocardial infarction. Many clinical studies have suggested that patency of the infarct-related artery, achieved by thrombolytic therapy or revascularization procedures, is a predictor of survival rates irrespective of myocardial salvage. The open-artery hypothesis suggests that an open infarct-related artery may result in other potential mechanisms, of benefits including electrical stability. This review focuses on the various levels and types of evidence supporting this contention.