Enter the ankle systolic pressure (mmHg) and the brachial systolic pressure (mmHg) into the Calculator. The calculator will evaluate the Anke Brachial Index.
Anke Brachial Index Formula
ABPI = ASP / BSP
Variables:
- ABPI is the Anke Brachial Index ()
- ASP is the ankle systolic pressure (mmHg)
- BSP is the brachial systolic pressure (mmHg)
To calculate Anke Brachial Index, divide the anke systolic pressure by the brachial systolic pressure.
How to Calculate Anke Brachial Index?
The following steps outline how to calculate the Anke Brachial Index.
- First, determine the ankle systolic pressure (mmHg).
- Next, determine the brachial systolic pressure (mmHg).
- Next, gather the formula from above = ABPI = ASP / BSP.
- Finally, calculate the Anke Brachial 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.
ankle systolic pressure (mmHg) = 40
brachial systolic pressure (mmHg) = 45
Frequently Asked Questions
What is the Ankle Brachial Index (ABI) used for?
The Ankle Brachial Index (ABI) is a simple, non-invasive test used to screen for peripheral arterial disease (PAD), a condition in which the arteries in the legs are narrowed or blocked. It can also help assess the severity of the blockage.
How is the Ankle Brachial Index (ABI) test performed?
The ABI test is performed by measuring blood pressure in both arms (brachial pressure) and both ankles (ankle systolic pressure) using a standard blood pressure cuff and a Doppler device. The highest pressure recorded at the ankles is divided by the highest pressure recorded at the arms to get the ABI.
What does an ABI value indicate?
An ABI value between 1.0 and 1.4 is considered normal, indicating no significant blockage. A value of 0.9 or less suggests PAD, with lower values indicating more severe disease. Values above 1.4 may indicate rigid arteries, which require further evaluation.
Can the Ankle Brachial Index (ABI) test be done at home?
While the ABI test is typically performed by healthcare professionals in a clinical setting, there are portable devices available for home use. However, it’s important to have the results interpreted by a healthcare provider to ensure accuracy and proper diagnosis.
