ABI Calculator

Calculate Ankle-Brachial Index (ABI)



Formula

The formula to calculate the Ankle-Brachial Index (ABI) is:

\[ \text{ABI} = \frac{\text{BPankle}}{\text{BParm}} \]

Where:

What is the Ankle-Brachial Index (ABI)?

The Ankle-Brachial Index (ABI) is a simple, non-invasive test that compares the blood pressure measured at your ankle with the blood pressure measured at your arm. The ABI score can help indicate the risk of peripheral artery disease (PAD). A lower ABI value can suggest narrowing or blockage of the arteries in the legs, which is a common condition in PAD.

Example Calculation

Let's assume the following values:

Using the formula to calculate the Ankle-Brachial Index (ABI):

\[ \text{ABI} = \frac{120}{140} \approx 0.86 \]

The Ankle-Brachial Index (ABI) is approximately 0.86.