Question:
Which of the following is the best stent material for a femoropopliteal bypass intervention?
Which of the following is the best stent material for a femoropopliteal bypass intervention?
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Think covered self-expanding nitinol with a microporous polymer cover.
Updated On: Jun 24, 2026
- Dacron
- Reversed saphenous vein
- PTFE
- None
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The Correct Option is C
Solution and Explanation
Step 1: Understand the setting. The femoropopliteal segment is highly mobile, so a stent used here must flex without fracturing while resisting restenosis.
Step 2: Choose the material. PTFE (polytetrafluoroethylene)-covered self-expanding nitinol stents are preferred in femoropopliteal interventions. PTFE-covered stents are engineered with a 30 to 100 micron pore size that allows endothelial lining of the stent-graft and vessel healing.
Step 3: Why self-expanding nitinol. Only self-expanding covered nitinol stents should be used in this segment, because their flexibility tolerates the bending and compression forces around the knee.
Step 4: Why the distractors are wrong. Dacron is used for larger central grafts, not flexible femoropopliteal stents. Reversed saphenous vein is a bypass conduit graft, not a stent. So PTFE is the best answer.
Step 2: Choose the material. PTFE (polytetrafluoroethylene)-covered self-expanding nitinol stents are preferred in femoropopliteal interventions. PTFE-covered stents are engineered with a 30 to 100 micron pore size that allows endothelial lining of the stent-graft and vessel healing.
Step 3: Why self-expanding nitinol. Only self-expanding covered nitinol stents should be used in this segment, because their flexibility tolerates the bending and compression forces around the knee.
Step 4: Why the distractors are wrong. Dacron is used for larger central grafts, not flexible femoropopliteal stents. Reversed saphenous vein is a bypass conduit graft, not a stent. So PTFE is the best answer.
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