晚期耳硬化症CO2激光辅助镫骨开窗术疗效的初步观察

目的　探讨CO2激光辅助镫骨开窗人工镫骨植入术治疗晚期耳硬化症的效果。方法　2010年1月~2014年1月间15例（16耳）临床确诊为晚期耳硬化症的患者在我科接受了CO2激光辅助镫骨开窗人工镫骨植入术，术前言语频率平均气导听阈70.21 dB HL，平均骨导听阈38.49 dB HL，平均气骨导差（air conduction-bone conduction gap，ABG）31.72 dB HL，所有病例术后随访超过半年。结果　术后半年言语频率平均气导听阈 43.7 dB HL，平均骨导听阈28.95 dB HL，平均气骨导差14.75 dB HL，ABG≤20 dB者9耳，占比56.3%，ABG闭合≤10 dB者6耳，占比37.5%。无一例术后出现顽固性眩晕、感音神经性聋及面瘫等严重并发症。结论  CO2激光辅助技术降低了镫骨开窗手术严重并发症的几率，多数患者术后听力明显提高，是一种安全、实用、相对经济的选择。

Preliminary investigation of the effect of CO2 laser assisted stapedotomy on the treatment of advanced otosclerosis

OBJECTIVE To explore the outcomes of CO2 laser assisted stapedotomy with artificial stapes prostheses in the treatment of advanced otosclerosis. METHODS Between January 2010 and January 2014, 15 patients (16 ears) diagnosed as advanced otosclerosis accepted CO2 laser assisted stapedotomy with artificial stapes implantation in our department. The averaged preoperative air conduction threshold of the speech frequency was 70.21 dB HL, the averaged bone conduction threshold was 38.49 dB HL, the averaged air-bone gap (ABG) was 31.72 dB HL. All cases were followed up for more than 6 months after operation. RESULTS All cases accepted auditory follow up after 6 months postoperatively. The speech frequency average air conduction threshold was 43.7 dB HL, the average bone conduction threshold was 28.95 dB HL, the average ABG was 14.75 dB HL. The ABG≤20 dB was achieved in 9 ears (56.3%) and ABG closure (≤10 dB) was achieved in 6 ears (37.5%). No cases appeared intractable vertigo, sensorineural hearing loss, secondary facial paralysis and other serious complications. CONCLUSION CO2 laser assisted technique reduced the probability of serious complications of stapedotomy, most patients with hearing level improved significantly. It's a safe, practical, relatively economical choice for advanced otosclerosis.