A nurse is assessing a client with suspected peripheral arterial disease. Which of the following findings should the nurse expect to observe during the physical examination?

Cool, pale extremities with diminished or absent pedal pulses are classic signs of arterial insufficiency in PAD. Other options suggest venous issues like dependent rubor, strong pulses, or venous stasis.

Understanding the Pathophysiology
Peripheral arterial disease (PAD) is a manifestation of systemic atherosclerosis affecting the lower extremities. The underlying problem is the progressive narrowing and hardening of the arterial lumen due to plaque buildup. This stenosis restricts blood flow to the tissues, and the clinical presentation depends on the severity of the occlusion and the metabolic demands of the muscle and skin. In the early stages, blood flow may be sufficient at rest but becomes inadequate during exercise, leading to claudication. As the disease advances, the perfusion deficit becomes critical even at rest, resulting in ischemic changes visible on physical examination.

Expected Physical Examination Findings
The correct answer is 3. When you assess a client with suspected PAD, the hallmark findings are directly linked to chronic low blood flow. The affected extremities will feel cool to the touch due to reduced circulation of warm blood from the core. The skin often appears pale and can be shiny and atrophic. A critical vascular assessment is the palpation of pedal pulses (dorsalis pedis and posterior tibial), which will be diminished or absent. These findings reflect the inability of the stenotic arteries to deliver adequate blood volume to the distal limb.

Why the Other Options Are Incorrect
- Option 1: Dependent rubor (redness when the leg is lowered) and edema are more characteristic of severe PAD with a reactive hyperemic response, but the classic early-to-moderate finding is pallor on elevation. Furthermore, significant bilateral edema is not a primary sign of arterial insufficiency; it is a hallmark of venous insufficiency or heart failure. PAD does not cause dependent edema.
- Option 2: Warm, pink skin with strong pedal pulses describes a normal arterial examination. This finding rules out significant arterial occlusive disease. In PAD, the skin temperature is cool, and pulses are weak or absent.
- Option 4: Brownish discoloration around the ankles (hemosiderin staining) and varicose veins are classic signs of chronic venous insufficiency, not arterial disease. Venous insufficiency results from incompetent valves leading to blood pooling, venous hypertension, and leakage of red blood cells into the tissues, which is a completely different pathophysiological process from the atherosclerotic obstruction seen in PAD.

Clinical Significance and Guideline-Based Approach
A thorough physical examination is the cornerstone of the office-based assessment for PAD as outlined in clinical guidelines. The finding of cool, pale extremities with diminished pulses should immediately raise your suspicion for PAD and prompt further evaluation, such as calculating the ankle-brachial index (ABI). Proper diagnosis is critical because PAD is associated with significant morbidity and mortality, not only from the risk of nonhealing ulcers, rest pain, and amputation but also as a powerful marker for concomitant coronary and cerebrovascular atherosclerotic disease ^[1].