Shock Index Calculator

HR ÷ SBP.

Shock index 0.82

Step-by-step with your numbers:

1. Values used:

2. Heart rate = 90 bpm

3. Systolic BP = 110 mmHg

4. Shock index = 0.82

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SI = HR ÷ SBP. >0.9 may indicate shock. Informational — seek emergency care.

FAQ

Emergency?

A high SI can mean hemodynamic instability — get medical help.