Viccaro M, De Seta E, Covelli E, Balsamo G, Filipo R
ENT Department, La Sapienza University, Rome, Italy.
Acta Otorhinolaryngol Ital. 2008 Aug;28(4):218-20.
A rare case of cochlear implant surgery complication is described: air collection behind the ear. A 61-year-old male with a 20-year history of progressive bilateral profound sensorineural hearing loss underwent cochlear implant surgery on the left ear with Clarion Hi-Res 90K (Advanced Bionics, Sylmar, CA, USA). Ten days after surgery, the patient presented visible tumefaction behind the ear corresponding to the receiver-stimulator. Ultrasonography, with a probe of 30 MHz, of the surface behind the ear showed formation of probable liquid content but aspiration with a 20-gauge needle yielded 30 cm3 of air without blood or pus. An unusual case is described of a minor complication occurring in an adult cochlear implant patient presenting a swelling behind the ear that was found to be collected air. Although ultrasonography can be useful to evaluate localization of swelling behind the ear and to differentiate between liquid and solid collection, it is not useful for identification of air collection. The Eustachian tube test can show an abnormally patent tube and prevent this complication.
耳后积气。一名61岁男性，有20年双侧进行性重度感音神经性听力损失病史，接受了左耳Clarion Hi-Res 90K（美国加利福尼亚州西尔玛市先进生物科技公司）人工耳蜗植入手术。术后10天，患者耳后对应接收器-刺激器处出现明显肿胀。用30MHz探头对耳后表面进行超声检查显示可能有液体形成，但用20号针头抽吸抽出30立方厘米空气，无血液或脓液。描述了一例不寻常的病例，一名成人人工耳蜗植入患者出现轻微并发症，耳后肿胀被发现是积气。尽管超声检查有助于评估耳后肿胀的位置并区分液体和固体聚集，但对识别积气无用。咽鼓管测试可显示咽鼓管异常通畅，并预防此并发症。
