Certified Wound Ostomy Nurse (CWON) Practice Test

At what ABI value is modified compression therapy considered only if needed?

1. ≤ 0.90

2. ≤ 0.50

3. ≤ 0.60 - 0.80

4. ≥ 1.30

The correct answer is: ≤ 0.60 - 0.80

The correct interpretation of the question revolves around the ankle-brachial index (ABI) and its implications for compression therapy. The ABI is a critical measurement used to assess the presence of peripheral artery disease (PAD) and helps determine the appropriateness of compression therapy for patients with venous insufficiency or ulcers. In terms of ABI values, when the ABI is between 0.60 and 0.80, it typically indicates that the patient may have a certain level of arterial compromise but does not necessarily preclude the use of modified compression therapy. This range is viewed as a caution zone where the risks and benefits of applying compression should be carefully weighed. If compression therapy is considered, it may be indicated only under specific conditions or when the benefits outweigh the risks, thus requiring individualized decision-making. In contrast, an ABI value of 0.90 or lower indicates more significant arterial compromise, making compression therapy riskier and generally contraindicated, while values of 1.30 or higher suggest calcified arteries, often requiring other interventions rather than traditional compression. Therefore, the ABI range of 0.60 - 0.80 serves as a guideline, indicating that modified compression may be utilized, but only if absolutely necessary and with caution.