Shock Index Calculator
Calculate the Shock Index (Heart Rate / Systolic BP) as an early marker for hemodynamic instability.
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Result
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Formula
A simple ratio that can identify impending shock even when individual vital signs appear to be in the "normal" range.
Worked Example
Frequently Asked Questions
What is a normal Shock Index?
Generally between 0.5 and 0.7.
Why use it if BP is normal?
Individual vital signs may stay within normal limits due to compensatory mechanisms. The Shock Index often rises before the blood pressure falls.
What is the threshold for concern?
An index above 0.9 suggests significant hemodynamic instability and a high risk of developing full-blown shock.
Medical Disclaimer
This calculator is provided for informational and educational purposes only. It is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making any decisions based on these results. Do not disregard or delay seeking medical advice because of information obtained from this tool.
AI Assistant
Ask about this calculator
I can help you understand the shock index calculator formula, interpret your results, and answer follow-up questions.
Try asking
Our AI assistant provides general estimates and advice only. Please consult a qualified healthcare professional before making any health-related decisions.
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