Ankle brachial pressure index
Ankle Brachial Pressure Index (ABPI)
Ankle Brachial Pressure Index (ABPI) or Ankle Brachial Index (ABI) is a simple, non-invasive diagnostic test used to detect Peripheral Artery Disease (PAD). The test compares the blood pressure in the ankle with the blood pressure in the arm.
Pronunciation
Ankle Brachial Pressure Index: /ˈæŋ.kəl ˈbreɪ.kiː.əl ˈprɛʃ.ər ˈɪn.dɛks/
Etymology
The term is derived from the location where the blood pressure is measured - the ankle and the brachial artery in the arm - and the fact that it is an index or ratio of these two measurements.
Procedure
The ABPI is calculated by dividing the systolic blood pressure at the ankle by the systolic blood pressure at the brachial artery. A normal ABPI is between 1.0 and 1.4. An ABPI less than 1.0 indicates PAD, with lower values indicating more severe disease.
Related Terms
- Peripheral Artery Disease: A circulatory condition in which narrowed blood vessels reduce blood flow to the limbs.
- Systolic Blood Pressure: The highest pressure when your heart beats and pushes the blood round your body.
- Brachial Artery: The major blood vessel of the upper arm.
- Ankle: The joint connecting the foot with the leg.
See Also
- Doppler Ultrasound: A noninvasive test that can be used to estimate the blood flow through your blood vessels.
- Atherosclerosis: A disease in which plaque builds up inside your arteries.
External links
- Medical encyclopedia article on Ankle brachial pressure index
- Wikipedia's article - Ankle brachial pressure index
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