Ankle Brachial Index Test | 合法醫療器材資訊網

Theanklebrachialindex,orABI,isasimpletestthatcomparesthebloodpressureintheupperandlowerlimbs.HealthcareproviderscalculateABIby ...

The ankle brachial index, or ABI, is a simple test that compares the blood pressure in the upper and lower limbs. Health care providers calculate ABI by dividing the blood pressure in an artery of the ankle by the blood pressure in an artery of the arm. The result is the ABI. If this ratio is less than 0.9, it may mean that a person has peripheral artery disease (PAD) in the blood vessels in his or her legs.

In PAD, plaque builds up in the arteries. It often affects the vessels that bring blood to the legs. The reduced blood flow can cause pain and numbness. Low ABI may mean that your legs and feet aren’t getting as much blood as they need. An ABI test won’t show exactly which blood vessels have become narrowed or blocked, though.

During an ankle brachial index test, you lie on your back. A technician takes your blood pressure in both of your a...