Objective: flow change of arterial anastomosis site during free flap surgery in diabetic patients.~Background: No research was published about flow change of arterial anastomosis site of the free flap during surgery.~Plan: Using Duplex sonography, various parameters related flap perfusion will be evaluated before and after the administration of alprostadil.
We aim to evaluate the flow change of arterial anastomosis site during free flap surgery in diabetic patients.