Vol. 6, Issue 1, Part A (2024)

Background: Use of the Electrocardiogram (ECG) is necessary for early assessment of people believed to have acute coronary syndrome (ACS). This study sought to determine whether there was any relationship between ST segment elevation in the 12-lead ECG and the culprit coronary artery in patients with acute ST-segment elevation myocardial infarction (STEMI) having primary PCI.
Methods: This cohort study was carried out on 100 patients with STEMI experiencing primary PCI. 12-lead ECG and Echocardiography were performed to all patients. 
Results: ECG findings in different types of myocardial infarctions are significant predictors of culprit artery described by angiogram. The ECG findings of LAD had a sensitivity of 92.45%, specificity of 87.23%, PPV of 89.1% and NPV of 91.1%. The ECG findings of RCA had a sensitivity of 73.3%, specificity of 97.1%, PPV of 91.7% and NPV of 89.5%. The ECG findings of LCx had a sensitivity of 58.8%, specificity of 86.7%, PPV of 47.6% and NPV of 91.1%.
Conclusions: The ECG findings of RCA, LAD, and LCx were significant predictors of RCA, LAD, and LCx culprit artery by angiogram.