Wound, Ostomy and Continence Nurses Society (WOCN) Practice Exam

What ABI range suggests the presence of a condition requiring modified compression for healing?

1. 0.50 or lower

2. 0.60 to 0.80

3. 0.90 to 1.30

4. Above 1.30

The correct answer is: 0.60 to 0.80

The range of 0.60 to 0.80 in the Ankle-Brachial Index (ABI) is associated with moderate arterial disease and indicates that there may be an increased risk of complications related to venous insufficiency. This level suggests that the blood flow may be somewhat compromised, and while patients might still benefit from compression therapy to aid in healing, the compression must be modified to ensure safety and efficacy. Using modified compression in this range helps to improve venous return while minimizing the risk of exacerbating any underlying arterial issues. High levels of compression could possibly lead to further complications or ischemia in these patients. Therefore, assessing the ABI and determining the range helps healthcare providers tailor their compression strategies to promote healing while protecting the patient’s vascular integrity. In contrast, the other ranges indicate different conditions. For instance, an ABI of 0.50 or lower typically suggests severe arterial disease, where compression therapy is often contraindicated due to the high risk of compromised blood flow. Meanwhile, an ABI of 0.90 to 1.30 is generally considered normal or acceptable for standard compression therapy, while an ABI above 1.30 indicates rigid arteries, often seen in patients with conditions like diabetes, where compression therapy is again not