Lymphology Association of North America (LANA) Practice Exam

Why is elevation of the lower extremities beneficial in patients with chronic venous insufficiency?

1. Reduces hemosiderin staining

2. Reduces venous hypertension

3. Activates the bicuspid valve

4. Activates the arterial-venous reflex

The correct answer is: Reduces venous hypertension

Elevation of the lower extremities is beneficial in patients with chronic venous insufficiency primarily because it reduces venous hypertension. When the legs are elevated, gravity assists in the return of blood from the lower extremities back to the heart. This elevation decreases the hydrostatic pressure within the veins of the legs, allowing for improved venous return and reducing the overall pressure in the venous system. This is particularly important for patients with chronic venous insufficiency, as their veins may already be compromised in their ability to return blood efficiently due to valve dysfunction or other underlying issues. By alleviating the pressure within these veins, elevation can lead to decreased swelling, improved circulation, and a reduction in the symptoms associated with venous insufficiency, such as pain and heaviness in the legs. The other choices, while they may relate to various aspects of venous health, do not precisely capture the primary mechanism by which leg elevation alleviates the symptoms experienced by patients with chronic venous insufficiency. Reducing hemosiderin staining is a secondary benefit that may arise from improved blood flow, but it is not the direct mechanism of action regarding elevation. Similarly, while activation of the bicuspid valve or arterial-venous reflex may be relevant to vascular