Otorhinolaryngology Research Center, Amir-Alam Hospital, Department of Otolaryngology-Head and Neck Surgery, Tehran University of Medical Sciences, Tehran, Iran.
Otolaryngol Head Neck Surg. 2010 Oct;143(4):516-20. doi: 10.1016/j.otohns.2010.05.023. Epub 2010 Aug 21.
To determine functional results after lateral semicircular canal fenestration on congenital conductive hearing loss.
Case series with chart review.
Amir-Alam otolaryngology tertiary referral center.
Twenty patients with congenital oval window malformations who were not candidates for ossicular reconstruction underwent lateral semicircular canal fenestration. A skin graft was placed over the perforated fascial graft on the fenestrated area.
The median preoperative mean air conduction (MAC) was 56.9 dB (50.0 dB median air-bone). Postoperative median MAC gain of 34.3 dB (P < 0.001) and the median air-bone gap of 18.8 dB were observed. The mean bone conduction (MBC) did not show any significant changes postoperatively (P = 0.12). No sensorineural hearing loss, tinnitus, or imbalance was observed.
We demonstrated hearing improvement after lateral semicircular canal fenestration. This technique can be considered as an alternative for patients with middle ear anomalies who are not candidates for ossicular reconstruction.
探讨先天性传导性听力损失患者行水平半规管开窗术后的功能结果。
病例系列，病历回顾。
Amir-Alam 耳鼻喉科三级转诊中心。
20 例先天性卵圆窗畸形患者，由于无法进行听骨链重建，行水平半规管开窗术。在开窗区覆盖穿孔筋膜移植物上的皮肤移植物。
术前平均气导（MAC）中位数为 56.9dB（中位数空气骨导 50dB）。术后 MAC 平均增益为 34.3dB（P<0.001），气骨导差中位数为 18.8dB。骨导（MBC）术后无明显变化（P=0.12）。无感音神经性听力损失、耳鸣或失衡。
我们证明了水平半规管开窗术后听力改善。对于无法进行听骨链重建的中耳畸形患者，该技术可作为一种替代方法。
