A 54-year-old woman with diabetes presents with rest pain, rubor, and diminished pulses in the leg. The most appropriate therapy is?

• A. Vasodilator therapy.
• B. Bypass surgery.
• C. Exercise program.
• D. Embolectomy.

Answer: (B)

Rest pain with rubor and diminished pulses indicates critical limb ischemia from advanced peripheral arterial disease, meaning medical therapy alone won’t restore enough blood flow. The goal is to revascularize the limb to improve perfusion and prevent progression to tissue loss. Bypass surgery achieves this by creating a new route for blood flow around blocked arterial segments, often using a vein graft or synthetic conduit. It’s particularly effective in diabetics who frequently have multilevel, long-segment occlusive disease where other approaches may be less durable or feasible.

In contrast, a therapeutic exercise program helps mainly with intermittent claudication and isn’t sufficient for rest pain. Vasodilator therapy doesn’t reliably improve perfusion in severely occluded arteries, and an embolectomy is aimed at acute embolic occlusion, not chronic atherosclerotic disease presenting with rest pain.