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慢性化脓性中耳炎单耳患病、＜50岁、无并发症409例，按中耳炎类型分单纯型和骨疡-胆脂瘤型中耳炎，从术前听力图对在250、500、1000、2000、4000Hz频率进行患耳与健耳的平均骨导听阈进行比较，结果表现：①慢性化脓性中耳炎可引起骨导听阈升高；②骨导听阈损失程度与病程无关，而与中耳炎类型有关，即骨疡胆脂瘤型中耳炎骨导听力损失较重。提示慢性化脓性中耳炎尤其是骨疡胆脂瘤型中耳炎需及时治疗，以免引起混合型耳聋。
Chronic suppurative otitis media mononeuropathy, <50 years old, no complications of 409 cases, according to the type of otitis media is simple and type of bone sores - cholesteatoma otitis media, preoperative audiogram at 250,500,1000,2000, 4000Hz frequency of suffering from the ear and the average bone conduction hearing threshold comparison, the results showed: ① chronic suppurative otitis media can cause increased bone conduction threshold; ② bone conduction threshold loss has nothing to do with the duration of the disease, but with the type of otitis media that bone Hearing cholesteatoma otitis media bone conduction hearing loss heavier. Prompt chronic suppurative otitis media, especially in the treatment of otitis media cholesteatoma should be promptly treated, so as not to cause mixed deafness.