Abstract
We evaluated the blood flow in anastomosed vessels by ultrasound imaging (Venue 40®) after free flap transplantation. We examined 20 head and neck reconstructions. There were 8 rectus abdominis musculocutaneous flaps, 5 antero-lateral thigh flaps, and 7 forearm flaps. In all cases, the blood flow in the anastomosed vessels and the flap penetrating branch was confirmed using Venue 40®, and the position was marked on the skin. On bed-side observation of the flaps after surgery, blood flow was evaluated using conventional methods (flap color tone, pin prick test, etc.) and Venue 40®. No abnormality was observed in 14 cases. As abnormality was found in 6 cases, skin flap blood flow was reevaluated by ultrasonography. The results of ultrasonography were similar with those by Venue 40® in all 6 cases with abnormalities.
Several methods have been reported for evaluating blood flow after free flap transplantation, but a reliable and objective method has not been established. As Venue 40® can be repeatedly employed at the bed side by the doctor or medical staff, it may be useful for monitoring flaps.
