Ultrasonic Shears Decrease Postoperative Hematomas in Head and Neck Microvascular Reconstruction.

[OBJECTIVE] To evaluate postoperative hematoma and takeback rates in a large series of microvascular reconstructions. We sought to determine whether the use of ultrasonic shears reduced these rates.

[STUDY DESIGN] Retrospective cohort study.

[SETTING] Tertiary referral hospital.

[METHODS] A total of 2288 patients undergoing free flap reconstruction for head and neck defects between 1995 and 2022 were reviewed. Patients undergoing dissection with and without ultrasonic shears were compared to determine postoperative hematoma and takeback rates.

[RESULTS] The overall hematoma rate was 1.3% (29/2288) for the entire cohort. The postoperative hematoma rates with and without ultrasonic shears were 0.63% (9/1418) and 2.3% (20/870), relative risk = 0.28, P = .0015. Of 870 patients undergoing surgery without ultrasonic shears, 14 (1.61%) were taken back to the operating room for control of bleeding compared to 8 of 1418 (0.56%) in the ultrasonic shears cohort.

[CONCLUSION] Our large series of patients undergoing microvascular reconstruction shows a decrease in postoperative hematoma rate and takeback for bleeding with the adoption of ultrasonic shears. Ultrasonic shears are an effective tool that can help decrease perioperative morbidity secondary to hematoma after head and neck tumor resection and microvascular reconstruction.