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

What defines modified compression therapy and its application?

1. 30-40 mmHg for all patients

2. 20-30 mmHg, for ABI 0.5-0.8

3. 10-20 mmHg for non-critical patients

4. Any pressure for patients with high ABI

The correct answer is: 20-30 mmHg, for ABI 0.5-0.8

Modified compression therapy is specifically characterized by its targeted pressure levels, which are adapted to the patient's individual needs based on their ankle-brachial index (ABI). The correct answer highlights the appropriate pressure range of 20-30 mmHg for patients with an ABI of 0.5 to 0.8. This range is significant because it strikes a balance between providing enough compression to aid in venous return and minimizing the risk of complications in those with moderate arterial disease, where higher pressures might exacerbate ischemia. With an ABI of 0.5 to 0.8, patients have some arterial compromise, meaning excessive compression could potentially worsen their condition. Using this moderate level of compression supports healing in venous insufficiencies while ensuring patient safety. Other options either prescribe inappropriate pressure levels that do not align with current clinical guidelines or fail to consider the critical measurement of ABI, which is essential for determining safe and effective compression therapy. Therefore, the selection of 20-30 mmHg as the standard for patients with an ABI of 0.5 to 0.8 is a thoughtful approach to managing their condition effectively while adhering to recommended safety parameters.