Distinguishing the right coronary artery from the left circumflex coronary artery as the infarct-related artery in patients undergoing primary percutaneous coronary intervention for acute inferior myocardial infarction

摘要: Aims Aim of this study was to investigate the diagnostic accuracy conventional electrocardiogram (ECG) algorithm [ST-segment elevation (STE) in lead III exceeding that II combined with ST-segment depression I or aVL] for identification infarct-related artery (IRA) a large cohort patients undergoing primary percutaneous coronary intervention (PCI) inferior wall STE myocardial infarction (STEMI). Methods and results We included 1131 STEMI, who underwent PCI between 2000 2007 whom pre-procedural 12-lead ECG available, recorded immediately prior PCI. The IRA determined during emergency angiography. Coronary angiography confirmed right (RCA) as 895 (79%) STEMI. Application resulted 624 true positive cases acute RCA obstruction (sensitivity: 70%, 95% CI: 67 –73%) 170 negative result (specificity: 72%, 66–77%). Sensitivity >90% established cumulative deviation above median (>18.5 mm). Conclusion showed low sensitivity non-invasive diagnosis occlusion an all-comer, STEMI only sufficient extensive deviation.