Which risk-scoring tools are commonly used in ACS to guide management decisions?

• A. MELD score
• B. TIMI and GRACE scores
• C. APACHE II score
• D. CHA2DS2-VASc

Answer: (B)

Risk stratification in acute coronary syndrome focuses on estimating short‑term mortality and recurrent ischemic events to guide how aggressively to treat. TIMI risk score and GRACE score are the tools most commonly used for this purpose.

The TIMI risk score for UA/NSTEMI uses seven factors—age, prior CAD or risk factors, known CAD, aspirin use in the past week, recent severe angina, ST-segment changes, and elevated cardiac markers. Each factor adds points, and a higher total signals greater risk of adverse outcomes, helping decide who may benefit from early invasive interventions versus medical management.

The GRACE score takes a broader look, including age, heart rate, systolic blood pressure, creatinine, Killip class (signs of heart failure), whether there was a cardiac arrest at admission, ST-seegment deviation, and elevated cardiac enzymes. It estimates the chance of death during hospitalization and at several months out, guiding decisions about intensity of monitoring, escalation of care, and timing of procedures.

These tools are specifically designed for ACS management decisions. In contrast, MELD is used to predict liver disease prognosis, APACHE II assesses overall ICU illness severity, and CHA2DS2‑VASc estimates stroke risk in atrial fibrillation.