How is the Ankle Brachial Index useful in clinical practice?

The Ankle Brachial Index (ABI) is a simple, non-invasive test used primarily to assess peripheral vascular health. It compares the blood pressure in the patient's ankle with the blood pressure in the arm (brachial artery). A low ABI can indicate poor blood flow to the limbs, which may suggest peripheral artery disease (PAD) or other vascular conditions. This measurement is valuable in clinical practice because it helps identify patients at risk for cardiovascular events and provides insight into the severity of atherosclerosis in the peripheral circulation.

Using the ABI as a diagnostic tool allows healthcare providers to effectively screen, monitor, and manage patients with potential vascular disorders, making it a critical component in assessing overall cardiovascular health and guiding further investigations or management strategies.