II. Technique
- Measure highest systolic reading in both arms
- Record first doppler sound as cuff is deflated
- Record at the radial pulse
- Use highest of the two arm pressures
- Measure highest systolic reading at 4 points per leg
- Calculate ratio of leg to brachial Blood Pressure
- Divide each leg cuff by highest brachial pressure
- Use similar method as in Ankle-Brachial Index
- Consider repeating above readings after Exercise
- Patient walks until absolute Claudication distance
III. Interpretation: Findings suggestive of Occlusion
- Proximal lower extremity pressures less than arms
- Proximal femoral pressure <20 mmHg over brachial
- Drop in doppler pressures between segments >20-30 mmHg