Arterial Exercise Testing

1. Same ABI criteria as resting study to identify severity of disease post-exercise

2. Report type of exercise: treadmill or toe-ups

Normal findings:

a. No decrease in ABI post-exercise

b. Decrease of <20 mmHg in absolute ankle pressure with full recovery in <3 minutes

Positive (abnormal) findings:

c. A decrease in ABI post-exercise should also be accompanied with a drop in ankle pressure to be positive

d. Decrease in absolute ankle pressure of  >20 mmHg or >20%

e. Decrease in ABI of >0.2

Recovery time

f. 2-6 minutes: suggests single level disease

g. 6-12 minutes: suggests multi-level disease

Note:  Navix protocol is to obtain post-exercise pressure measurements immediately, at 5 minutes and at 10 minutes in any limb that exhibits a pressure drop.