Cardiovascular and Pulmonary: Ankle Brachial Index Values

Question 1

Normal

Answer 1

• 1.00-1.40

Question 2

Non-compliant Arteries

Answer 2

• Greater than 1.40

Question 3

Borderline

Answer 3

• 0.91 to 0.99

Question 4

Abnormal

Answer 4

• Less than or equal to 0.90

- Associated with 2 to 4 fold increased risk for cardiovascular events and death

Question 5

Severe Arterial Disease

Answer 5

• Less than or equal to 0.50

- Increased risk of progression to severe or critical limb ischemia in one year

Question 6

Clinically significant change in ABI

Answer 6

• Greater than 0.15 or

- Greater than 0.10 in patients with symptoms