受试者均无全身疾病 ,亦无耳鼻咽喉疾病史 ,过去8周内无上呼吸道感染、鼻及鼻窦疾病症状和体征 ;试验前 2个月内未用过全身或局部药物。双侧鼻腔喷入0 .1%丁苄唑啉与 1%地卡因混合溶液 ,10分钟后吸除双侧鼻腔分泌物 ,鼻前庭皮肤以 0 .5%洗必太酒精溶液消毒 ,用无菌鼻镜撑开鼻前 Subjects had no generalized disease, no history of otolaryngology, no upper respiratory tract infection, signs and symptoms of nasal and sinus diseases in the past 8 weeks, and no systemic or topical medication within 2 months before the test. Bilateral nasal injection of 0 .1% buztimezine and 1% dexamethasine mixed solution, 10 minutes after the suction of bilateral nasal secretions, nasal vestibular skin with 0.5% chlorhexidine alcohol solution disinfection, with no Bacterial nose propped nose