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作者分析10年内692例乳突手术,有迷路瘘管者49例,1例为双耳,共50耳。瘘管部位:水平半规管48耳,其中水平及上半规管4耳、水平及后半规管1耳;耳蜗2耳。患者病史:38例有短暂眩晕发作史,少则数秒数分,多则数日,有时在变动头位或触动耳屏时发生眩晕。局部表现:上鼓室穿孔和鼓膜边缘性穿孔36耳、鼓膜大穿孔9耳、鼓膜被肉芽遮挡不能窥见者5耳。常见病理组织为肉芽及胆脂瘤。耳功能检查:“死耳”15耳、骨导下降35耳,常呈混合性聋。瘘管试验:术前35耳中23耳阳性;阴性者术中发现有肉芽或胆脂瘤充满上鼓室、鼓窦入口或鼓窦内。X线片全部乳突硬化型,9例显示有迷路瘘管。
The authors analyzed 692 cases of mastoid surgery within 10 years, with 49 cases of lost fistulas, and 1 case of binaural ears with a total of 50 ears. Fistula site: horizontal semicircular canal 48 ears, including the level and the upper semicircular canal 4 ears, the level and the semicircular canal 1 ear; 2 ears. Patient history: 38 patients had a history of transient vertigo, ranging from a few seconds to as many days, sometimes dizziness when changing the head or touching the tragus. Local performance: the tympanic perforation and tympanic membrane perforation 36 ears, tympanic membrane perforation 9 ears, tympanic membrane is blocked by the granulation can not see the 5 ears. Common pathological tissue for granulation and cholesteatoma. Ear function tests: “dead ears” 15 ears, 35 cases of bone loss, often mixed deafness. Fistula test: preoperative 35 ears 23 ears positive; negative were found during surgery granulation or cholesteatoma filled the upper tympanic cavity, drum sinus entrance or drum sinus. X-ray all mastoid sclerosis, 9 patients showed lost fistula.