ankle–brachial pressure index

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ankle–brachial pressure index (ABPI) n. the ratio of systolic blood pressure at the ankle (measured by a Doppler ultrasound probe placed over the dorsalis pedis artery; see pulse) to that measured at the brachial artery: used to quantify the severity of arterial occlusion in the leg. Peripheral arterial disease is present if the ABPI is less than 0.95.