This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: JIPMER 2018, Subject name: Surgery
Best graft for infra inguinal approach bypass: 
Select and explain. 
A. Dacron, B. PTFE, C. Polyester, D. Autologous vein
D: Autologous vein
Answer: D: Autologous vein 
Explanation: Vascular Graft Bioprosthetic Synthetic Autograft Homograft (allograft) Heterograft (Xenograft) Tissue engineered Textile: - Dacron Non-textile: -ePTFE - Polyurethane Best Natural vascular graft: Reversed saphenous vein Best synthetic vascular graft: Dacron Best vascular graft for suprainguinal bypass: Dacron Best vascular graft for infrainguinal bypass: Saphenous vein Best vascular graft for aoa: Dacron Most preferred graft for CABG: LIMA (left internal mammary aery) > Saphenous vein MC used graft for CABG: Saphenous vein