Objective To compare the efficacy of droperidol in combination with dexamethasone and each drug alone in the reduction of postoperative nausea, retching and vomiting (PONV) after thyroidectomy.

• 目的比较氟哌利多和地塞米松联用与二者单独应用对甲状腺手术后恶心呕吐(PONV)发生率的影响。