Comparison of GRACE Score and SYNTAX Score in Predicting Complexity of Coronary Artery Disease in Patients with NST-ACS

Objective: To compare the GRACE score and SYNTAX score in predicting Coronary Artery Disease (CAD) severity and the variation of GRACE score with respect to SYNTAX score to assess severity of CAD. Study Design: Analytical, Cross-sectional study. Place and Duration of Study: Armed Forces Institute of Cardiology/National Institute of Heart Diseases, Rawalpindi Pakistan, from Jan 2023 to Jun 2023. Methodology: Data was gathered from n=139 participants by using consecutive sampling technique on a data collection tool.Study variables such as demographics, comorbids, clinical characteristics and SYNTAX and GRACE score were noted to asses their role in determining CAD severity. An experienced cardiologist was assigned to analyze the coronary angiogram findings, performed by using conventional techniques through radial artery, ulnar or femoral artery access. SPSS version-24.00 was used for data management and analysis. Chi square test and Pearson correlation was applied to find the association and correlation respectively. Results: Mean age of study participants was 62.09±9.74 years and males were more in number 114(82.0%). Ninety three (66.9%) patients had NSTEMI. Gender (p=0.011,0.007), was significantly associated with SYNTAX score as well as GRACE score respectively and diabetic status (p=0.003) with GRACE score. There was a strong and positive correlation between GRACE score and SYNTAX score (r=0.64; p<0.001). Both scores showed significant association with CAD severity (p<0.05). Conclusion: There exists a statistically significant and positive correlation between GRACE score and SYNTAX score in non-ACS (NSTEMI and UA) patients who had confirmed diagnosis of CAD on coroangiogram. The greater the GRACE score, the greater was........