Enter the inspiratory hold pressure (Pa) and the expiratory hold pressure (Pa) into the calculator to determine the Driving Pressure.

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## Driving Pressure Formula

The following formula is used to calculate the Driving Pressure.

Pd = PI - PE

- Where Pd is the Driving Pressure (Pa)
- PI is the inspiratory hold pressure (Pa)
- PE is the expiratory hold pressure (Pa)

To calculate the driving pressure, subtract the expiratory hold pressure from the inspiratory hold pressure.

## How to Calculate Driving Pressure?

The following two example problems outline how to calculate the Driving Pressure.

**Example Problem #1:**

- First, determine the inspiratory hold pressure (Pa). In this example, the inspiratory hold pressure (Pa) is given as 40.
- Next, determine the expiratory hold pressure (Pa). For this problem, the expiratory hold pressure (Pa) is given as 20.
- Finally, calculate the Driving Pressure using the equation above:

Pd = PI – PE

Inserting the values from above and solving the equation:

Pd = 40 – 20 = 20 (Pa)

**Example Problem #2: **

Using the same process as above, first define the variables required by the formula. In this case, these values are:

inspiratory hold pressure (Pa) = 57

expiratory hold pressure (Pa) = 8

Entering these values yields:

Pd = 57 – 8 = 49 (Pa)