ABI Calculator

ABI: Ankle-Brachial index
Right ABI = Right ankle systolic BP / Brachial systolic BP
Left ABI = Left ankle systolic BP / Brachial systolic BP
*Brachial systolic BP: Use the higher value between left and right arm
*Ankle systolic BP: Use the higher value from Posterior tibial a. or Dorsalis pedis a.

※ ABI Interpretation
(1) ＞ 1.4 : Calcification / Vessel hardening
(2) 1.0 ~ 1.4 : Normal value
(3) 0.9 ~ 1.0 : Acceptable / Borderline PAD
(4) 0.7 ~ 0.9 : Mild PAD
(5) 0.5 ~ 0.7 : Moderate PAD
(6) ＜ 0.5 : Severe PAD