Table of Contents
What is normal ABPI?
ABPI is generally between 1.0 – 1.4 in healthy people, i.e. the systolic pressure at the ankle is greater than the systolic pressure at the arm. An abnormally low ABPI value (i.e. < 0.9) has a sensitivity of 79 – 95% and a specificity of approximately 95% for peripheral artery disease.
What does high ABPI mean?
Greater than 1.3 may suggest the presence of arterial calcification, such as in some people with diabetes, rheumatoid arthritis, systemic vasculitis, atherosclerotic disease, and advanced chronic renal failure.
What causes a high ABPI?
Vessel calcification, as can occur in diabetes and renal failure, ‘large’ oedematous legs or dependent lower limb oedema can result in falsely elevated lower limb systolic pressures. Abnormally high or low central systolic pressure can also affect the ABPI calculation.
What is a normal ankle BP?
The normal range for the ankle-brachial index is between 0.90 and 1.30. An index under 0.90 means that blood is having a hard time getting to the legs and feet: 0.41 to 0.90 indicates mild to moderate peripheral artery disease; 0.40 and lower indicates severe disease.
Which ankle-brachial index ABI value is indicative of severe atherosclerosis?
Interpreting the Ankle Brachial Index
| ABI Value | Interpretation | Recommendation |
|---|---|---|
| 0.9-1.0 | Acceptable | None |
| 0.8-0.9 | Some Arterial Disease | Treat risk factors |
| 0.5-0.8 | Moderate Arterial Disease | Refer to vascular specialist |
| Less than 0.5 | Severe Arterial Disease | Refer to vascular specialist |
What is a high ankle blood pressure?
Based on a recent review of the evidence, we recommend an ankle BP threshold of ≥155/90 mmHg to define high blood pressure in patients who do not have vascular disease.
What is ABPI in OSCE?
ABPI is a ratio composed of the blood pressure of the upper arm (brachial artery) and the blood pressure of the lower limb (dorsalis pedis and the posterior tibial artery). This guide provides a step-by-step approach to performing ABPI measurement in an OSCE setting.
What is ABPI and how is it calculated?
The ABPI is calculated by dividing the systolic blood pressure at the ankle by the systolic blood pressure in the arm.
What is the ankle brachial pressure index (ABPI) test?
Introduction The Ankle Brachial Pressure Index (ABPI) test is widely used in the setting of peripheral vascular disease by a diverse range of practitioners.
What is the difference between left and right ABPI?
Left ABPI = (highest pressure of either left PTA or DP) ÷ (highest brachial pressure) Right ABPI = (highest pressure of either right PTA or DP) ÷ (highest brachial pressure) Erroneous results can occur due to: