Swollen feet and legs, referred to medically as edema, occur when fluid is retained in the spaces between body cells. Edema typically affects the feet, ankles and lower legs, but can also impact any area of the body, causing systemic symptoms. Causes:
Ankleâbrachial pressure index - Interpretation of results. 1  In a normal subject the pressure at the ankle is slightly higher than at the elbow (there is reflection of the pulse pressure from the vascular bed of the feet, whereas at the elbow the artery continues on some distance to the wrist).
ABI, also called Ankle-Brachial Index test, is a test which. compares the blood pressure in your ankles to the blood. pressures in your arms. It is a safe and painless test that. helps your physician determine if your legs are getting the. proper amount of blood supply. Before your aBi.