Ankle-Brachial-Index -
a sensitive parameter to confirm PAD

1. Measure the systolic blood pressure by Doppler probe in the brachial and dorsalis pedis arteries of each sides
   
   • use the highest of the brachial pressure (left or right)
   • use the highest ankle pressure (dorsalis pedis or posterior tibial) for each leg
     
     
2. Calculate the ABI: divide the ankle pressure by the highest brachial pressure.

Interpretation:

• ABI ≥ 1.0: normal
• ABI 0.8 - 1.0: mild arterial occlusive disease
• ABI 0.5 - 0.8: moderate arterial occlusive disease
• ABI ≤ 0.5: severe arterial occlusive disease