Perez Obón J, Marín García J, Gil Paraíso P, Hernández Martín A, de Miguel García F, Martínez-Berganza y Asensio R
Hospital Miguel Servet, Zaragoza.
Acta Otorrinolaringol Esp. 1996 Jul-Aug;47(4):281-6.
A retrospective review was made of 719 primary stapedectomies and 48 re-operations carried out between 1975 and 1993. Preoperative and postoperative audiograms (6-12 months) were studied, analyzing 250, 500, 1000, 2000 and 4000 Hz, auditory gain and closure of the air-bone gap < or = 10 dB. Ninety percent had an auditory gain of > or = 10 dB at conversational frequencies. Age, the surgeon, and average preoperative pure tone did not influence the final result. Polyethylene prostheses (70.9%) and steel and teflon pistons (21.1%) were the prostheses used most often. Neurosensorial hearing loss (> 10 dB) occurred in 24 cases (3.3%). In revision stapedectomy, 66.6% of patients had air-bone gap closure of < or = 20 dB and 71% had a hearing gain of < or = 10 dB. Prosthesis displacement (43.7%) and incus necrosis (18.7%) were the most common findings in revision stapedectomy.
对1975年至1993年间进行的719例初次镫骨切除术和48例再次手术进行了回顾性研究。研究了术前和术后（6 - 12个月）的听力图，分析了250、500、1000、2000和4000赫兹的频率、听觉增益以及气骨导差缩小至≤10分贝的情况。90%的患者在对话频率下听觉增益≥10分贝。年龄、手术医生以及术前平均纯音并未影响最终结果。聚乙烯假体（70.9%）以及钢和聚四氟乙烯活塞（21.1%）是最常使用的假体。感音神经性听力损失（>10分贝）发生在24例患者中（3.3%）。在翻修镫骨切除术中，66.6%的患者气骨导差缩小至≤20分贝，71%的患者听力增益≤10分贝。假体移位（43.7%）和砧骨坏死（18.7%）是翻修镫骨切除术中最常见的发现。
