If you experience aching, cramping, or heaviness in your legs while walking, you might assume it’s just a normal sign of getting older. However, persistent leg pain is often an early warning sign of peripheral artery disease (PAD), a condition affecting many adults across Hunterdon County and Central New Jersey. Fortunately, determining the cause of your discomfort is quick and simple with an ankle-brachial index (ABI) test.
What Is an Ankle-Brachial Index (ABI) Test?
An ankle-brachial index (ABI) test is a quick, non-invasive vascular screening used to check for blocked or narrowed blood vessels in your legs. The test works by comparing the blood pressure measured at your ankles with the blood pressure measured in your arms.
A significantly lower blood pressure reading in your ankles indicates that plaque buildup is restricting normal blood circulation to your lower extremities.
What Happens During an ABI Test?
Many patients feel anxious about medical testing, but performing an ankle-brachial index (ABI) test is entirely painless and typically takes less than 20 minutes. Here is what you can expect during your appointment:
- Rest Period: You will lie comfortably on your back on an exam table for a few minutes so your blood pressure stabilizes.
- Cuff Placement: Standard blood pressure cuffs are placed around both of your arms and ankles.
- Ultrasound Sound Waves: A specialist applies a warm gel and uses a small, hand-held Doppler device over your arteries to listen to your pulse while inflating and deflating the cuffs.
- Ratio Calculation: Your vascular specialist divides the highest ankle pressure reading by the highest arm pressure reading to determine your ABI score.
Interpreting Your ABI Test Results
Your vascular specialist calculates your score by dividing your ankle blood pressure by your arm blood pressure. Here is what those numbers generally mean for your health:
- 1.0 to 1.4 (Normal): Indicates healthy circulation with no significant arterial blockages.
- 0.90 to 0.99 (Borderline): Suggests slight arterial narrowing. While blood flow isn’t completely blocked, your doctor may recommend lifestyle modifications or additional tests to evaluate symptoms further.
- 0.90 or Lower (PAD Present): Indicates a diagnosis of peripheral artery disease:
- 0.70 to 0.89: Mild PAD
- 0.40 to 0.69: Moderate PAD
- Lower than 0.40: Severe PAD
(Note: An ABI score above 1.40 suggests stiffened or calcified arteries, which is common in individuals with diabetes or kidney disease and requires additional evaluation.)
Schedule Your Vascular Assessment Today
Early detection is key to protecting your mobility and lowering your risk of heart attack or stroke. At the Center for Vascular Care at HCA, our board-certified vascular specialists use advanced diagnostic testing to help you walk without discomfort and manage PAD with confidence.
Located in Flemington, NJ, our center proudly serves patients from across Hunterdon, Somerset, and surrounding counties. If you routinely see a Hunterdon Cardiovascular Associates physician at our Clinton or Bridgewater offices, your doctor can easily coordinate your care and refer you directly to our Flemington location for specialized testing. Contact our team today at (908) 806-0190 to schedule your consultation and learn if an ankle-brachial index (ABI) test is right for you.