OBJECTIVE: To evaluate the preventive efficacy of highly selective 5-HT3 receptor antagonist tropisetron for postoperative nausea and vomiting(PONV) in patients undergoing neurosurgery craniotomy.

• 目的:评价高选择性5-羟色胺(5-HT3)受体拮抗剂托烷司琼对神经外科术后患者出现的恶心、呕吐的预防作用。