Which Rutherford category range is described for advanced PAD in the Makam study?

Which Rutherford category range is described for advanced PAD in the Makam study?

• A. 1-2
• B. 3-5
• C. 4-6
• D. 5-7

Answer: (B)

Understanding how Rutherford categories describe PAD severity helps here. The Rutherford scale moves from no symptoms to claudication, then to more disabling signs like rest pain and finally tissue loss, with major tissue loss being the most severe end. In the Makam study, advanced PAD is described within the mid-to-late stages that show substantial ischemia but stop short of the most extreme category. That means the range includes the manifestations of severe claudication, rest pain, and minor tissue loss—signs of significant perfusion deficit without the presence of major tissue loss or gangrene. So the description fits the portion of the scale that reflects serious, but not the most severe, limb ischemia.

Understanding how Rutherford categories describe PAD severity helps here. The Rutherford scale moves from no symptoms to claudication, then to more disabling signs like rest pain and finally tissue loss, with major tissue loss being the most severe end. In the Makam study, advanced PAD is described within the mid-to-late stages that show substantial ischemia but stop short of the most extreme category. That means the range includes the manifestations of severe claudication, rest pain, and minor tissue loss—signs of significant perfusion deficit without the presence of major tissue loss or gangrene. So the description fits the portion of the scale that reflects serious, but not the most severe, limb ischemia.