does injection of lidocaine with 1/100000 epinephrine immediately before lateral osteotomy reduce post-operative periorbital edema and ecchymosis in rhinoplasty?

background: postoperative periorbital edema and ecchymosis are common after rhinoplasty. we studied the effect of local injection of lidocaine/adrenaline immediately before osteotomy on prevention of post-operative periorbital edema and ecchymosis in rhinoplasty. m aterials and methods: thirty healthy candidates for rhinoplasty were enrolled in the self-controlled clinical trial study. lidocaine/adrenaline solution injected randomly to one side just prior to the lateral osteotomy. the opposite side used as a control. the degree of edema/ecchymosis on both sides was compared on the 1st, 2nd and 7th day postoperatively. r es ults: mean of severity of edema, 24 hours after operation was 3in both sides, (mann-whitney u; p=0.829). mean of severity of edema, 48 hours after operation was 2 in both sides (mann-whitney u; p=0.867) and it was 1 in both sides 7 days after operation (mann-whitney u; p=0.756).there was no significant difference between two sides. mean of severity of ecchymosis, 24 hours after operation was 3 in both sides (mann-whitney u; p=0.692). mean of severity of ecchymosis, 48 hours after operation was 2 in both sides (mann-whitney u; p=0.655) and it was 1 in both sides 7 days after operation (mann-whitney u; p=0.873). there was no significant difference between two sides. c onclusion: local injection of lidocaine/adrenaline solution immediately before lateral osteotomy could not reduce postoperative edema and ecchymosis in rhinoplasty.