Nishida T, Nishihara L, Hanada R, Tsukahara E, Okada T, Gomyo I
Division of Anesthesia, Minoh City Hospital.
Masui. 1999 May;48(5):518-22.
Hearing impairment is not often considered as a potential complication of general anesthesia, despite several reports of post-operative sensorineural hearing loss. These disorders have occurred after otological as well as cardiobypass surgery. We experienced two patients both of whom had undergone orthopedic surgery. In both cases the patients experienced bilateral reversible hearing impairment after general anesthesia with nitrous oxide. It is likely that a change in the middle ear pressure as a result of Eustachian tube dysfunction may have caused transient conductive hearing loss added to sensorineural hearing disorder. After these cases we interviewed a series of 115 patients who had undergone general anesthesia to assess the extent of this problem. Contrary to our expectation, 7 patients complained of ear fullness or autophony after inhalation of nitrous oxide, although these symptons diminished within 24 hours. It is important to be aware of the possibility of hearing impairment when nitrous oxide is used especially if the patient has a history of a previous middle ear disease.
尽管有几例关于术后感音神经性听力损失的报道，但听力障碍通常并不被视为全身麻醉的潜在并发症。这些病症在耳科手术以及心脏搭桥手术后均有发生。我们遇到了两名均接受过骨科手术的患者。在这两例病例中，患者在使用氧化亚氮进行全身麻醉后均出现了双侧可逆性听力障碍。咽鼓管功能障碍导致的中耳压力变化可能导致了在感音神经性听力障碍基础上又增加了短暂的传导性听力损失。在这些病例之后，我们对115例接受过全身麻醉的患者进行了访谈，以评估该问题的严重程度。与我们的预期相反，7例患者在吸入氧化亚氮后抱怨耳部胀满或自听过强，尽管这些症状在24小时内消失。当使用氧化亚氮时，尤其是如果患者有中耳疾病史，意识到听力障碍的可能性很重要。
