What is the normal range for an Ankle-Brachial Index (ABI)?

The normal range for an Ankle-Brachial Index (ABI) is indeed between 0.9 and 1.2. The ABI is a simple, non-invasive test used to assess the circulation in the limbs and is particularly useful in diagnosing peripheral artery disease (PAD). This ratio compares the blood pressure in a patient's ankle with the blood pressure in their arm.

A result within the range of 0.9 to 1.2 indicates normal blood flow and suggests that the arteries are functioning properly, without significant narrowing or blockage. Values below 0.9 may suggest the presence of PAD, while values above 1.2 can indicate arterial stiffness or other vascular abnormalities.

Understanding the correct norm for ABI is essential for healthcare providers when interpreting results, as it guides them in making decisions about further testing or interventions for patients who may have vascular issues.