鼓室炎症对自体骨听骨链重建术后听力的影响

目的 了解鼓室炎症对自体骨塑形听骨链重建术后听力的影响.方法 45例自体骨塑形听骨链重建术的患者,根据鼓室炎症轻重程度分为炎症轻组(25例)及炎症重组(20例).炎症轻组鼓室黏膜充血、光滑、无增厚;炎症重组鼓室黏膜肥厚、粘连、肉芽增生.比较两组术前后的平均气骨导差.结果 炎症轻组术后平均气骨导差比术前减少(17.87±7.11) dB,而炎症重组减少(9.65±5.13) dB,两组手术前后平均气骨导差值的差异有统计学意义(P＜0.01).结论 鼓室炎症的轻重程度是影响术后听力的重要原因.

Impact of tympanal inflammation on hearing after ossicular chain reconstruction with autologous bone

Objective To study the influence of tympanal inflammation on the hearing after ossicular chain reconstruction with autologous bone.Methods Forty-five patients undergoing ossiculoplasty were divided into 2 groups based on the severity of tympanal inflammation,and the average air-bone gap（ABG） was compared before and after operation.Of 25 cases with mild inflammation,the tympanal mucosa was congestive,smooth and no thickening;of 20 cases with severe inflammation,the tympanal mucosa was hypertrophic,adhesive and granulomatous.Results The postoperative ABG reduction was（17.87±7.11） dB in mild inflammation group and（9.65±5.13） dB in severe inflammation group.There was a significant difference in postoperative ABG reduction between both groups（P〈0.01）.Conclusion The severity of tympanal inflammation is the main cause of postoperative hearing.