Certified Wound Ostomy Nurse (CWON) Practice Test

What is the purpose of elevational pallor/dependent rubor testing?

1. To measure blood pressure in the lower extremities

2. To assess for claudication

3. To observe changes in blood flow and color in the legs

4. To determine the presence of a deep vein thrombosis

The correct answer is: To observe changes in blood flow and color in the legs

The purpose of elevational pallor/dependent rubor testing is to observe changes in blood flow and color in the legs. This test is specifically designed to assess the vascular integrity and blood supply to the lower extremities. When a patient raises their legs, any change in color, such as pallor (whiteness), indicates compromised blood flow, revealing underlying vascular issues. Conversely, when the legs are lowered, the appearance of rubor (redness) can indicate a reactive hyperemia, which suggests that blood is returning to the area but may be indicative of arterial insufficiency. This testing is particularly useful for identifying peripheral artery disease (PAD) and can help in diagnosing the severity of ischemia affecting the legs. By noting the speed and nature of color changes during the test, healthcare professionals can glean important information regarding the perfusion status of the lower extremities. This is crucial for determining appropriate interventions and management for patients with circulatory problems.