Colletti Vittorio, Soli Sigfrid D, Carner Marco, Colletti L
ENT Department, University of Verona, Verona, Italy.
Int J Audiol. 2006 Oct;45(10):600-8. doi: 10.1080/14992020600840903.
Early clinical findings are reported for subjects implanted with the Vibrant Med-El Soundbridge (VSB) device. The present criteria for the VSB, limiting its application to patients with normal middle ear function, have been extended to include patients with ossicular chain defects. Seven patients with severe mixed hearing loss were implanted with the transducer placed onto the round window. All had undergone previous surgery: six had multiple ossiculoplasties, and one had the VSB crimped on the incus with unsuccessful results. Round window implantation bypasses the normal conductive path and provides amplified input to the cochlea. Post-operative aided thresholds of 30 dB HL were achieved for most subjects, as compared with unaided thresholds ranging from 60-80 dB HL. Aided speech reception thresholds at 50% intelligibility were 50 dB HL, with most subjects reaching 100% intelligibility at conversational levels, while unaided thresholds averaged 80 dB HL, with only one subject reaching 100% intelligibility. These results suggest that round window implantation may offer a viable treatment option for individuals with severe mixed hearing losses who have undergone unsuccessful ossiculoplasties.
报告了植入Vibrant Med-El Soundbridge（VSB）装置的受试者的早期临床结果。VSB的现行标准将其应用局限于中耳功能正常的患者，现扩大到包括听骨链缺损患者。7例重度混合性听力损失患者接受了将换能器置于圆窗的植入手术。所有患者均曾接受过手术：6例接受过多次听骨成形术，1例曾将VSB夹在砧骨上但效果不佳。圆窗植入绕过了正常的传导路径，为耳蜗提供放大输入。与未助听阈值在60 - 80 dB HL相比，大多数受试者术后助听阈值达到30 dB HL。在50%可懂度时的助听听觉言语接受阈值为50 dB HL，大多数受试者在对话水平时达到100%可懂度，而未助听阈值平均为80 dB HL，只有1例受试者达到100%可懂度。这些结果表明，对于听骨成形术失败的重度混合性听力损失患者，圆窗植入可能是一种可行的治疗选择。
