Mortality of patients with ST-segment elevation myocardial infarction and cardiogenic shock treated by PCI is correlated to the infarct-related artery - Results from the PL-ACS Registry

BackgroundMortality of patients with ST-segment elevation myocardial infarction (STEMI) with cardiogenic shock (CS) on admission remains high despite invasive treatment. The aim of this analysis was to assess the relationship between the infarct-related artery (IRA) and the early and 12-month outcomes of patients with STEMI and CS treated by percutaneous coronary intervention (PCI).MethodsTwo thousand ninety patients with STEMI and CS registered in the prospective Polish Registry of Acute Coronary Syndromes from October 2003 to November 2009 were included.ResultsThe in-hospital mortality in the left main (LM), left anterior descending artery (LAD), circumflex artery (Cx), and right coronary artery (RCA) groups was 64.7%, 41.0%, 36.0%, and 30.8%, respectively, with p < 0.0001. The 12-month mortality in the LM, LAD, Cx, and RCA groups was 77.7%, 58.2%, 55.1%, and 45.0%, respectively, with p < 0.0001. After multivariate adjustment, LM as the IRA was significantly associated with higher 12-month mortality (hazard ratio = 1.71, 95% confidence interval = 1.28-2.27, p = 0.0002).ConclusionsIn-hospital and long-term mortality of patients with STEMI and CS treated by PCI are significantly correlated to the IRA, being highest for LM and lowest for RCA.