Operative technique
All operations was performed by the same surgeon under general
anesthesia. We performed 40 HS tonsillectomy using a high-intensity
focused ultrasound machine(Johnson & Johnson,New Brunswick,USA) at the
level of 5 in dissection and 3 in haemostasis, performed 40 coblation
tonsillectomy using EVac Xtra HP type knife head connected to Coblate Ⅱ
Surgical System(ArthroCare Corp,Austin,USA) at the level of 7 in
ablation and 3 in coagulation, and performed 40 CD tonsillectomy using
sickle-shaped knives and bipolar electrocautery.
All patients were not given antibiotics, hemostatic drugs or other drugs
after surgery. Patients were given a cold liquid diet in three days
after the operation, and a cold semi-liquid diet in 14th postoperative
day.