Prognostic Role of Initial and Residual Syntax Score in Patients with ST-Segment Elevation Myocardial Infarction after Primary Percutaneous Coronary Intervention

We recruited 327 consecutive patients with STEMI and multivessel coronary artery disease (MVCAD) who underwent primary PCI. We then assessed the severity of coronary atherosclerosis using coronary angiography and SYNTAX score. All patients were further stratified into two groups: 1) SYNTAX ≤22 points (n=213); 2) SYNTAX ≥23 points (n=114). Out of 327 patients included into initial analysis, 317 underwent the secondary coronary angiography to assess the residual severity of coronary atherosclerosis after primary PCI. The patients were again divided into two groups: 1) ≤8 points (n=243); 2) ≥9 points (n=74). Major adverse cardiovascular events within 1 year of follow-up were considered as the study endpoints.