论文部分内容阅读
报告３０９例（３４８耳）慢性化脓性中耳炎患者行同种听小骨移植术后１～５年随访观察，以语言频率气导平均数计算，其听力提高３０ｄＢ者１４０耳（４０．２３％），２０ｄＢ者５２耳（１４．９４％），１０ｄＢ者１０２耳（２９．３１％），无变化者５４耳（１５．５２％）．提示远期听力较为稳定。并对局部有病变者２８耳行鼓室探查术，发现手术失败原因系病灶清除不够彻底及操作、补贴技术不当所致。当清除病灶，复位同种听骨，听骨链重建后，听力均有不同程度改善和提高。对同种听骨的选择、磨制及成活机理等进行了讨论。
309 patients (348 ears) with chronic suppurative otitis media were followed up 1 to 5 years after the same type of ossicular transplantation. The average frequency of air conduction was 140 dB (40.23%), 52 ears (14.94%) with 20 dB, 102 ears with 10 dB (29.31%), 54 ears with no change (15.52%). Prompt hearing more stable. And 28 cases of local tympanoplasty tympanometry found that the cause of the failure of the lesion was not thoroughly cleared and operation, subsidies due to improper technology. When clear the lesion, reset the same kind of bone, reconstruction of the ossicular chain, the hearing has improved to varying degrees and improve. The same kind of bone selection, grinding and survival mechanism were discussed.