Prognostic implications of Q waves at presentation in patients with ST‐segment elevation myocardial infarction undergoing primary percutaneous coronary intervention: An analysis of the HORIZONS‐AMI study

摘要

BackgroundPresence of Q waves on the presenting electrocardiogram (ECG) in patients with ST‐segment elevation myocardial infarction (STEMI) has been associated with worse prognosis; however, whether the prognostic value of Q waves is influenced by baseline characteristics and/or rapidity of revascularization based on the guideline‐based metric of door‐to‐balloon time remains unknown.