What ABI value is consistent with mild peripheral arterial disease?

A value of 0.85 for the Ankle-Brachial Index (ABI) is indicative of mild peripheral arterial disease (PAD). The ABI is a comparison of the blood pressure in the patient's ankle to that in the arm, and it is used to assess blood flow and diagnose PAD.

An ABI value greater than 1.0 typically suggests normal arterial flow, while values between 0.91 and 0.99 are considered borderline. A value of 0.85 falls within the range indicating mild PAD, suggesting that there is some impairment in blood flow to the lower extremities but not severe enough to indicate more advanced disease.

Values lower than 0.85 indicate progressively worsening PAD, with more severe arterial blockage leading to values like 0.65 or lower, which indicate moderate to severe disease. A value of 1.1 would represent normal or slightly elevated blood flow, not indicative of any arterial disease.