Derinsu Ufuk, Serin Gediz Murat, Akdaş Ferda, Batman Çağlar
Department of Audiology, Marmara University School of Medicine and Department of Otorhinolaryngology, Acıbadem Healthcare, Group Bakırköy Hospital, Istanbul, Turkey.
J Craniofac Surg. 2011 Mar;22(2):520-2. doi: 10.1097/SCS.0b013e31820855ac.
The goal of the cochlear implant surgery is to place the electrode array with minimal damage to preserve the residual hearing. Round-window insertion can be performed in a manner that is potentially less traumatic than the standard cochleostomy. The purpose of the study was to investigate audiological results of the round-window approach using standard electrode.
A retrospective study was performed to evaluate our experience in patients with implanted through round window between January 2007 and March 2009. Sixty patients had undergone cochlear implant surgery through the round window with full insertion of a standard electrode array. Preoperative and postoperative pure-tone thresholds were measured for implanted ears in the range of 250 to 4000 Hz.
Within these 60 cases, 31 patients had been evaluated. The population comprised 16 women and 15 men. The mean age was 15.96 years (range, 4-64 years). Follow-up times ranged from 6 to 26 months. Preservation of low-frequency hearing (250 and 500 Hz) was achieved in 27 (87%) of 31 patients. Complete hearing preservation (all frequencies) was accomplished in 11 patients (35.48%). No hearing could be determined postoperatively in 4 patients (12.9%), having preoperative thresholds of 120 dB at 250, 500, and 1000 Hz.
Round-window approach has been widely used for preservation of residual hearing. In our patients with severe to profound hearing loss, we preserved residual hearing. Although the residual hearing cannot be sufficient for using additional acoustic stimulation, the preserved residual hearing means minimal damage and a more convenient cochlea, so this is promising for future development.
人工耳蜗植入手术的目标是在对残余听力损伤最小的情况下植入电极阵列。圆窗插入法的操作方式可能比标准的耳蜗开窗术创伤性更小。本研究的目的是调查使用标准电极的圆窗入路的听力学结果。
进行一项回顾性研究，以评估我们在2007年1月至2009年3月期间通过圆窗植入患者的经验。60例患者通过圆窗接受了人工耳蜗植入手术，并完全植入了标准电极阵列。对植入耳在250至4000Hz范围内进行术前和术后纯音阈值测量。
在这60例病例中，31例患者接受了评估。该人群包括16名女性和15名男性。平均年龄为15.96岁（范围4至64岁）。随访时间为6至26个月。31例患者中有27例（87%）实现了低频听力（250和500Hz）的保留。11例患者（35.48%）实现了完全听力保留（所有频率）。4例患者（12.9%）术后无法确定听力，其术前在250、500和1000Hz的阈值为120dB。
圆窗入路已广泛用于保留残余听力。在我们的重度至极重度听力损失患者中，我们保留了残余听力。虽然残余听力可能不足以使用额外的声刺激，但保留的残余听力意味着最小的损伤和更便利的耳蜗，因此这对未来的发展很有前景。
