Question 1

Is there a TIMI score for STEMI as well?

Accepted Answer

Yes — there is a separate TIMI risk index for STEMI (TIMI 30-day mortality) that uses age, heart rate, systolic BP, weight, Killip class, and other parameters. The score described here is specifically for UA/NSTEMI.

Question 2

How does TIMI for UA/NSTEMI differ from GRACE?

Accepted Answer

TIMI is simpler (7 binary variables vs. 8 continuous/categorical) and can be calculated in seconds without a calculator. GRACE offers better discrimination (higher C-statistic) and estimates in-hospital and 6-month mortality separately. Many centres use TIMI as a first-pass triage tool and GRACE for more detailed risk assessment.

Question 3

Do high-sensitivity troponin assays change TIMI's performance?

Accepted Answer

Elevated cardiac biomarkers is one of the seven variables. With hs-cTn, more patients will meet the biomarker criterion, potentially shifting them into higher risk categories. The score's discriminative ability remains preserved with hs-cTn.