The ankle-brachial index (ABI; the ratio of systolic blood pressure in the ankle to that in the arm), is a measure of occlusion of peripheral arteries in the leg. Peripheral arterial stenosis may be observed with atherosclerosis and with increased intima media thickness as seen in diseases such as pseudoxanthoma elasticum. The most common cause of peripheral arterial stenosis in patients over 40 years of age is atherosclerosis. Cerebral and coronary arteries are by definition not included in peripheral artery disease.

Narrowing of peripheral arteries with reduction of blood flow to the limbs. This feature may be quantified as an ankle-brachial index of less than 0.9, and may be manifested clinically as claudication.

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Peripheral artery disease

Arterial disease of legs, Peripheral artery occlusive disease, Peripheral vascular disease, Occlusive arterial disease, Occlusive vascular disease

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