Relation between electrocardiographic ST-segment resolution and early and late outcomes after primary percutaneous coronary intervention for acute myocardial infarction.

ST-segment resolution (STR) is a surrogate end point in reperfusion trials of acute myocardial infarction, but there are few data regarding the optimum methods of measurement, clinical predictors, and correlation with late cardiac mortality. Consecutive patients (n = 1,005) who had acute myocardial infarction and >/=2 mm ST-segment elevation controlled with primary percutaneous coronary intervention (PCI) constituted our study group. Follow-up was obtained in 97% of patients at a median of 6.

Importance of time-to-reperfusion in patients with acute myocardial infarction with and without cardiogenic shock treated with primary percutaneous coronary intervention.

Background: Time-to-treatment is important for survival in patients with acute myocardial infarction (AMI) treated with fibrinolytic therapy, but the importance of time-to-treatment with primary percutaneous coronary intervention (PCI) is controversial. Previous studies evaluating the importance of time-to-treatment with primary PCI have not analyzed patients with cardiogenic shock separately.

Methods: Consecutive patients with AMI (n = 1843) treated with primary PCI were prospectively enrolled in the LeBauer Cardiovascular Research Foundation Registry.