Which tests can be used to assist in diagnosing a patient with peripheral arterial disease? Select all that apply. (Select All that Apply.)

A. Apply a heating pad on a low setting to help relieve leg pain: Applying direct heat can increase the risk of burns due to reduced sensation in PAD patients. Heat also causes vasodilation, which might exacerbate symptoms of PAD.
B. Wear anti-embolic stockings during the day: Anti-embolic stockings can restrict arterial blood flow in PAD patients, worsening symptoms like claudication.
C. Rest with the legs above heart level: Elevating legs above heart level is contraindicated in PAD because it can decrease arterial blood flow to the extremities, worsening ischemic pain.
D. Adjust the thermostat so that the environment is warm: Keeping the environment warm helps to promote blood flow and reduce symptoms of PAD. Cold environments can cause vasoconstriction, worsening ischemia in the extremities.

A. Heberden nodes: These are bony swellings commonly seen in osteoarthritis, particularly affecting the distal interphalangeal joints of the fingers, not typically associated with rheumatoid arthritis (RA).
B. Early morning stiffness: RA is characterized by prolonged morning stiffness lasting more than 30 minutes, which improves with activity, distinguishing it from the short-lived stiffness seen in osteoarthritis.
C. Pain increasing by activity: This is more characteristic of osteoarthritis, where joint pain typically worsens with use and activity. RA pain often improves with movement as the joints "warm up."
D. Autoimmune disease: RA is an autoimmune condition where the body's immune system attacks its own tissues, leading to inflammation and joint damage.
E. Low-grade fever: Low-grade fever can be a systemic symptom of RA due to the autoimmune inflammatory process, which is not a feature of osteoarthritis.