P5481Predictors of mortality in patients with non-anterior ST-segment elevation myocardial infarction undergoing primary percutaneous coronary intervention

Abstract Background Previous studies have indicated that patients with non-anterior ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI) have a more favorable prognosis compared with anterior STEMI, especially in the short term. Purpose Our aim was to identify predictors of increased 30-day mortality in patients with non-anterior STEMI undergoing primary PCI. Methods This analysis included 8188 patients referred to primary PCI during 2009–2017, from a prospective electronic registry of a high-volume catheterization laboratory, for whom 30-day follow-up was available. Non-anterior infarction was defined as presence of ST-segment elevation in inferior and/or lateral ECG leads or true posterior MI. Multivariable Cox regression was used to assess the mortality risk at 30 days. Results 59.4% (n=4863) of the included patients presented with a non-anterior STEMI. Mortality rate was significantly lower in patients with non-anterior vs. anterior STEMI (4.2% vs. 8.3%, p median of 61, HR 2.2, p=0.002), baseline renal failure (eGFR