Medical calculators
ABI
Ankle-Brachial Index
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How it is calculated
ABI = highest ankle systolic pressure / highest brachial systolic pressure. A high value is not reassuring - above 1.4 means the vessels are calcified and incompressible, which is common in diabetes and renal failure and makes the test uninterpretable rather than normal.
About
Ankle-brachial index, screening for peripheral arterial disease. A high value is not reassuring: it means incompressible calcified vessels.
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