📉 Shock Index Calculator
Calculate the shock index (HR/SBP) to detect occult haemodynamic compromise.
Shock Index Calculator
Heart rate (bpm)
Systolic BP (mmHg)
When to use
Identify compensated shock when HR and BP look individually acceptable.
How it works
Shock index = heart rate ÷ systolic BP. Normal 0.5–0.7; ≥ 1.0 suggests significant compromise.
Key points
- Useful in trauma, sepsis and obstetric haemorrhage.
- Modified shock index (HR/MAP) and age-adjusted forms exist.
- Trends matter as much as a single value.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.