PROGNOSTIC VALUE OF GRACE VERSUS TIMI SCORE FOR IN-HOSPITAL OUTCOMES AFTER NON-ST-ELEVATION ACUTE CORONARY SYNDROME

Abstract

Objectives: To compare the predictive value of TIMI and GRACE score for predicting in-hospital outcomes after non-ST elevation acute coronary syndrome (NSTE-ACS).

Methodology: This study included prospectively recruited cohort of patients presented to a tertiary care cardiac center of Karachi, Pakistan who were diagnosed with NSTE-ACS. GRACE and TIMI score were obtained and in-hospital mortality was recorded. The receiver operating characteristic (ROC) curves analysis was performed and area under the curve (AUC) was obtained as indicative of predictive value for both scores.

Results: A total of 300 patients were included, out of which 76.7%(230) were male and mean age was 58.04±10.71 years. Risk profile comprises of 84.3%(253) hypertensive, 42.0%(126) diabetic, 27.3%(82) smokers, 9.0%(27) obese, 15.3%(46) dyslipidemic, and 31%(93) with sedentary lifestyle. Mean GRACE and TIMI score were 120.19±33.17 and 3.18±0.85 respectively. In-hospital mortality rate was 5.3%(16). AUC for the GRACE score was 0.851 [0.767 - 0.934] with the optimal cut-off value of 150 with sensitivity of 68.8% and specificity of 84.9%. The AUC for the TIMI score was 0.781[0.671 - 0.891] with the optimal cut-off value of 4 with sensitivity of 75.0% and specificity of 67.6%.

Conclusion: The GRACE score has high discriminating strength for predicting in-hospital mortality after NSTE-ACS. GRACE score should be used as risk stratification modality in clinical decision making for the management of NSTE-ACS.