患者 ,女 ,5 6岁。因左耳、咽部阵发性疼痛 1周就诊。患者因左中耳腔反复积液病史 ,1周前行左中耳腔置管术 ,置入的通气管为头皮静脉针头连接的软管 ,长约 5 0mm ,自耳道前下方皮下、鼓环下置入下鼓室 ,通气管的前端触及下鼓室的内壁 ,深度约 3～ 4mm。术后患者出现阵发性眩晕 Patient, female, 5 6 years old. Due to left ear, pharyngeal paroxysmal pain 1 week treatment. Patients with history of the left middle ear cavity repeated effusion, 1 week before the left middle ear cavity catheterization, into the ventilation tube for the scalp vein needle connected hose, about 50mm, from the ear before the bottom of the subcutaneous, drum ring Placed under the tympanum, the front end of the snorkel touch the inner wall of the lower tympanic cavity, a depth of about 3 ~ 4mm. Postoperative patients with paroxysmal vertigo