system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 75-year-old man presents to the emergency department because of pain in his left thigh and left calf for the past 3 months. The pain occurs at rest, worsens with walking, and is slightly improved by hanging his foot off the bed. He has had hypertension for 25 years and type 2 diabetes mellitus for 30 years. He has smoked 30–40 cigarettes per day for the past 45 years. On examination, the femoral, popliteal, and dorsalis pedis pulses are diminished, but detectable on both sides. The patient’s foot is shown in the image. Which of the following is the most likely diagnosis?
assistant
Critical limb ischemia