Enter the heart rate and the systolic blood pressure into the Calculator. The calculator will evaluate the Shock Index.

## Shock Index Formula

SI = HR / SBP

Variables:

- SI is the Shock Index (bpm/mmHg)
- HR (bpm) is the heart rate
- SBD (mmHG) is the systolic blood pressure

To calculate Shock Index, divide the heart rate in beats per minute by the systolic blood pressure.

## How to Calculate Shock Index?

The following steps outline how to calculate the Shock Index.

- First, determine the heart rate.
- Next, determine the systolic blood pressure.
- Next, gather the formula from above = SI = HR / SBP.
- Finally, calculate the Shock Index.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

heart rate = 150

systolic blood pressure = 60