Vascular & Venous Disease
Ankle-Brachial Index (ABI)
The ankle-brachial index divides ankle pressure by arm pressure. Around 1.00 is normal; a lower number points to narrowed leg arteries.
This is a free, plain-language patient education guide written by Rias Ali, MD, FACC, a board-certified interventional cardiologist. Every guide is grounded in current peer-reviewed evidence and major society guidelines, organized in a way patients can actually use during a visit.
Download the Ankle-Brachial Index (ABI) guide
What's inside this guide
- Plain-language explanation of ankle-brachial index (abi)
- Why it matters and what the major risks are
- Treatment options with risks, benefits, and alternatives
- Common misconceptions clarified
- Lifestyle and self-care advice
- Specific warning signs — when to call us, when to call 911
- Sources used to build the guide (peer-reviewed and society guidelines)