Acute Coronary Syndrome (ACS), which is part of Coronary Artery Disease (CAD), is a major cardiovascular problem because it causes high hospitalization rates and high mortality rates. From the previous study, 80% of NSTEMI patients had multivessel disease. So, the complexity of the lesions on NSTEMI is higher than that of STEMI. The SYNTAX score (SYNergy between percutaneous coronary intervention with TAXus and cardiac surgery) is a scoring system that was developed comprehensively to describe the complexity of coronary arteries from angiographic results. Methods: This study is a descriptive analytic study with a cross-sectional design conducted at the Department of Cardiology and Vascular Medicine at H. Adam Malik Hospital Medan by taking data on patients with Non-ST Evelation Myocardial Infarction (NSTEMI) and undergoing coronary angiographyfrom January 2019 to June 2020 and 50 samples were included in this study.From the ECG examination, the value of the FQRS-T angle will be measured. Then from the results of coronary angiography, the SYNTAX score for each patient will be calculated. Furthermore, statistical analysis was carried out to see whether there was a correlation between FQRST and SYNTAX scores in NSTEMI patients and how strong the correlation was.

Keywords : Frontal QRS-T Angle, SYNTAX Score, NSTEMI