目的评估植入式骨导助听器在双侧先天性小耳畸形患者听觉重建中的应用效果。方法前瞻性对2018年5月~2019年2月在我院行全耳郭再造手术的15例双侧先天性外中耳畸形患者同期植入索菲康Alpha骨导助听器。耳再造采用Nagata二期法,于全耳郭...目的评估植入式骨导助听器在双侧先天性小耳畸形患者听觉重建中的应用效果。方法前瞻性对2018年5月~2019年2月在我院行全耳郭再造手术的15例双侧先天性外中耳畸形患者同期植入索菲康Alpha骨导助听器。耳再造采用Nagata二期法,于全耳郭再造二期手术时行骨导系统植入。术前进行声场下纯音测听(PTA)及言语识别阈(SRT)测试;术后2周进行骨导助听器外机佩戴,开机当天、佩戴后3个月及6个月重复测试其在声场下PTA及SRT,并记录患者的不良反应。结果双侧小耳畸形患者在未进行助听前的声场下PTA为(57.6±4.6)dB HL,开机当天和佩戴3、6个月后的PTA分别为(21.8±3.5)、(20.7±4.5)、(19.5±2.9)dB HL。平均声场PTA改善了37 dB HL,差异具有统计学意义(P<0.05);助听后患者各方向SRT较助听前亦有明显改善,差异具有统计学意义(P<0.05)。各组患者无明显手术及佩戴相关不良反应。结论植入索菲康骨导助听器可有效改善双侧先天性小耳畸形患者的听阈及言语识别能力。展开更多
先天性外中耳畸形(microtia and atresia,MA)俗称小耳畸形,常伴有不同程度的以传导性为主的听力损失,如不加以干预,患者易出现言语发育滞后,进而影响其生活和学习[1]。传统的外耳道成形术可使外耳道狭窄患者获得稳定的术后听力改善,但...先天性外中耳畸形(microtia and atresia,MA)俗称小耳畸形,常伴有不同程度的以传导性为主的听力损失,如不加以干预,患者易出现言语发育滞后,进而影响其生活和学习[1]。传统的外耳道成形术可使外耳道狭窄患者获得稳定的术后听力改善,但是对于外耳道闭锁者往往效果不佳[2]。因而,使用人工听觉设备,尤其是骨导助听设备(bone conducted hearing device,BCHD),是该类患者听觉功能康复的重要手段[3]。展开更多
The cochlea is an important structure in the hearing system of humanity. Its unique structure enables the sensibility to the sound waves of varied frequencies. The widely accepted model of the cochlea is expressed as ...The cochlea is an important structure in the hearing system of humanity. Its unique structure enables the sensibility to the sound waves of varied frequencies. The widely accepted model of the cochlea is expressed as a long tube longitudinally divided by a membrane named the Basilar Membrane （BM）, into two fluid-filled channels. Based on various assumptions for the cochlear fluid and structure, simplified mathematical and mechanical cochlear models were developed to help to understand the mechanism of the complex coupled system in the past decades. This paper proposes a hydrodynamic numerical cochlear model with consideration of the Fluid-Structure Interaction （FSI）. In this model, the cochlear lymph is considered as in a Newtonian viscous fluid, and the basilar membrane is modeled as a composite structure. The traveling wave is simulated. Also focusing on the pressure in the fluid field, the results are compared with studies of Peterson and Bogert, where it was assumed that the slow compressive waves are traveling along the BM. Furthermore, the transmitting time of the cochlear traveling wave is also discussed.展开更多
文摘目的评估植入式骨导助听器在双侧先天性小耳畸形患者听觉重建中的应用效果。方法前瞻性对2018年5月~2019年2月在我院行全耳郭再造手术的15例双侧先天性外中耳畸形患者同期植入索菲康Alpha骨导助听器。耳再造采用Nagata二期法,于全耳郭再造二期手术时行骨导系统植入。术前进行声场下纯音测听(PTA)及言语识别阈(SRT)测试;术后2周进行骨导助听器外机佩戴,开机当天、佩戴后3个月及6个月重复测试其在声场下PTA及SRT,并记录患者的不良反应。结果双侧小耳畸形患者在未进行助听前的声场下PTA为(57.6±4.6)dB HL,开机当天和佩戴3、6个月后的PTA分别为(21.8±3.5)、(20.7±4.5)、(19.5±2.9)dB HL。平均声场PTA改善了37 dB HL,差异具有统计学意义(P<0.05);助听后患者各方向SRT较助听前亦有明显改善,差异具有统计学意义(P<0.05)。各组患者无明显手术及佩戴相关不良反应。结论植入索菲康骨导助听器可有效改善双侧先天性小耳畸形患者的听阈及言语识别能力。
基金supported by the Shanghai Committee of Science and Technology of China(Grant No.10ZR1403500,10ZR1405800)the National Basic Research Development Program of China(973Program,Grant No.2012CB518502)the National Natural Science Foundation of China(Grant No.30971528).
文摘The cochlea is an important structure in the hearing system of humanity. Its unique structure enables the sensibility to the sound waves of varied frequencies. The widely accepted model of the cochlea is expressed as a long tube longitudinally divided by a membrane named the Basilar Membrane （BM）, into two fluid-filled channels. Based on various assumptions for the cochlear fluid and structure, simplified mathematical and mechanical cochlear models were developed to help to understand the mechanism of the complex coupled system in the past decades. This paper proposes a hydrodynamic numerical cochlear model with consideration of the Fluid-Structure Interaction （FSI）. In this model, the cochlear lymph is considered as in a Newtonian viscous fluid, and the basilar membrane is modeled as a composite structure. The traveling wave is simulated. Also focusing on the pressure in the fluid field, the results are compared with studies of Peterson and Bogert, where it was assumed that the slow compressive waves are traveling along the BM. Furthermore, the transmitting time of the cochlear traveling wave is also discussed.
