Canada ACS (C-ACS) Risk Score
Canada ACS (C-ACS) risk score (Huynh 2013): age ≥ 75, Killip > 1, systolic BP < 100, and heart rate > 100 give a 0–4 score where a rising total marks higher in-hospital mortality across the acute-coronary-syndrome spectrum.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Age ≥ 75 years
- Yes
- Killip class > 1
- No
- Systolic BP < 100 mmHg
- Yes
- Heart rate > 100 bpm
- No
Result: C-ACS 2 — intermediate in-hospital mortality risk.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- 0
- Lowest in-hospital mortality across the ACS spectrum.
- 1-2
- Intermediate in-hospital mortality risk.
- 3-4
- High in-hospital mortality. Age >= 75, Killip > 1, SBP < 100, HR > 100. A risk score, not a treatment order.
What you enter
- Age ≥ 75 years (+1)
- Killip class > 1 (+1)
- Systolic BP < 100 mmHg (+1)
- Heart rate > 100 bpm (+1)
How this is calculated
Huynh T, Kouz S, Yan AT, et al. Canada acute coronary syndrome risk score: a new risk score for early prognostication in acute coronary syndromes. Am Heart J. 2013;166(1):58-63. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.