This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Ankle brachial pressure index is more than 1.3 in all except 
Select and explain. 
A. Diabetes mellitus, B. Mural calcification, C. Renal insufficiency, D. Critical limb ischaemia
D: Critical limb ischaemia
Answer: D: Critical limb ischaemia 
Explanation: In critical Limb ischaemia, ABPI is decreased (0.3).