Yi Wang

Publications (8)0 Total impact

• Article: [Local response caused by implant after cochlear implantation].

  Yong-Zhi Liu, Ke-Li Cao, Yi Wang, Chao-Gang Wei, Li-Jun Yang
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  ABSTRACT: To approach the incidence rate, symptoms, etiologies, correlating reasons, consequences and treatments of local responses caused by implant after cochlear implantation and to provide reference for the future works. From 1995 to 2007 there were 997 cases adopted cochlear implantation in Peding Union Medical College Hospital. Ten cases experienced local responses were analyzed retrospectively. The incidence of local response was 1.003%. There were 6 males and 4 females. The ages were between 13 months to 8 years old. The average age was 34 months. The devices mainly were made by Cochlear and Med-EL companies. The mainly symptoms and signs were local swellings, complaint of pruritus after ear, decrease of sound legibility and so on. Onset frequencies of this disease was 1 to 8 times. The bacterium cultured of displacing liquids was negative. But the IgE was detected in 2 cases. Results showed the patients were midrange status of hypersensitivity. Positive conservative treatments must be done including antibiotics, antihistamines, necessarily using immunotherapy. Besides local infection of bacteria, the allergy caused by silicone of implant coupled be a reason. Although the diagnose of this disease was difficult, but the screening of source of hypersensitivity was necessary before operation. It was recurrent attacks and maybe liable by kindred patients. Onset age was more below 4 years old. The patch test should be done again when the symptoms were occurrence after operation. If severe secondary infection was occurred and the states could not be well controlled the devices in the body must be explanted immediately. When the conditions were stable reimplantation could be experienced by non-sensibilisinogen devices.
  Zhonghua er bi yan hou tou jing wai ke za zhi = Chinese journal of otorhinolaryngology head and neck surgery 07/2008; 43(6):409-13.
• Article: [Cochlear implantation in patients with ossified cochleas].

  Yi Wang, Ke-li Cao, Xiao-wei Chen, Hua Yang, Wei Song, Wei-dong Pan
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  ABSTRACT: The ossified cochlea was no longer an absolute contra-indication to cochlear implantation but it was still a challenge even for the experienced otologist. To report the condition of cochlear implantation and the hearing results of 31 cases of cochlear ossification. Retrospective analysis of cochlear implantation of 720 cases of cochlear implantation from May 1995 to July 2005 in Peking Union Medical College Hospital. Thirty-one cochlear ossification patients was found from all the 720 surgeries which included 27 mild cases and 4 severe ones, 14 males, 17 females. And the age of operation was 1. 4 - 59. 0 years old , mean age was 13. 2 years old. All of them had cochlear implanted through mastoid-facial recess. There was no complications during or post the operations. And the hearing threshold was about 40 dB in the sound field, the results were similar to those without cochlear ossification. Although it was difficult of cochlear implantation in cochlear ossification patients, but in most cases especially mild ones all the electrodes could be implanted after clearing the ossified tissue, and had few damage to the electrodes. Now it was possible to practice in the partial cochlea ossification.
  Zhonghua er bi yan hou tou jing wai ke za zhi = Chinese journal of otorhinolaryngology head and neck surgery 01/2007; 41(12):904-7.
• Article: [Cochlear implantation in patients with otitis media-related diseases].

  Hua Yang, Ke-li Cao, Xiao-wei Chen, Yi Wang, Chao-gang Wei, Xin Jin, Bo-jun Wei
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  ABSTRACT: To evaluate the indications, surgical techniques and complications of cochlear implantation in patients with otitis media-related diseases. Retrospective study of the data collected from patients receiving cochlear implantation. Totally 866 cases of cochlear implantation were performed in Peking Union Medical College Hospital from May 1995 to February 2006. Among which, 41 patients with otitis media-related diseases were grouped into 5 types: chronic secretory otitis media (13 cases), silent (subclinical) otitis media (18 cases), dry eardrum perforation (1 case), bilateral cholesteatoma of middle ear (2 cases) and middle ear granuloma (7 cases). Seven cases were accompanied with deformities of middle ear and (or) inner ear. Pedicled aponeurosis of occipitofrontalis muscle was transplanted to cover and protect the inserted electrodes and facial nerve in a patient with bilateral cholesteatoma after radical mastoidectomy. All the 41 patients with otitis media-related diseases were successfully implanted in one stage or staged operations and followed up uneventfully for 5 months to 6 years and 11 months. All implant devices had worked normally and all patients had performed well. Patients with chronic secretory otitis media, silent (subclinical) otitis media, middle ear granuloma or dry ear-drum perforation could be operated in one stage or staged procedures safely and effectively. Patients with bilateral cholesteatoma could be implanted after radical removal of related lesions. Pedicled aponeurosis of occipitofrontalis muscle could be transplanted in cases of mastoid bowl to cover and protect the inserted electrodes and the exposed facial nerve and with easy access to observe the mastoid cavity. Active suppurative otitis media was contraindicated for cochlear implantation. Long-term following-up was essential for better evaluation of the outcomes of cochlear implantation in patients with otitis media-related diseases.
  Zhonghua er bi yan hou tou jing wai ke za zhi = Chinese journal of otorhinolaryngology head and neck surgery 01/2007; 41(12):908-12.
• Article: [Clinical review of cochlear implant in 533 cases].

  Ke-li Cao, Chao-gang Wei, Xin Jin, Xiao-wei Chen, Yi Wang
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  ABSTRACT: To summarize and analyze the etiology, surgical indications, operation methods and outcomes of cochlear implantation. 533 cases (534 ears) with severe and profound hearing loss received cochlear implant, 489 were pre-lingual deafness and 38 cases were post-lingual deafness. Their ages at implant, 1 to approximately 3 were 167, approximately 5 were 77, approximately 7 were 73, approximately 14 were 136, approximately 17 were 28, >17 were 52. 76 cases (14. 3%) were found the middle and inner ear malformations. That included Mondini 26 in cases, Common cavity in 10 cases and Large vestibule aqueduct syndrome in 20 cases. The average pure tone threshold were 105.5 dB HL, ABR threshold were >95 dB nHL and 40 Hz threshold in 500 Hz were 101.7 dB. The devices they used were Nucleus 22M in 27 ears, 24M in 308 ears, 24R Contour in 131 ears and 24R ST in 21 ears; Med El C40+ in 44 ears; Clarion CI in 3 ears. Facial recess approach was performed in normal cases, and in Common cavity cases horizontal semicircular canal approach was used. Preoperative hearing and speech evaluations were done in most cases. In 26 Mondini case, gusher were happened in 20 cases. The insertion depth in normal cases: Nucleus were 30 bands, Med El were 31 mm. In Mondini cases, Nucleus were 28 bands. In Common cavity cases, Nucleus were 26 bands. Of 533 cases, The average of open set sentences discrimination of post-lingual deadness was 70%, the satisfaction rate of questionnaire for pre-lingual deafness under 17 years old was 94.7%. Cochlear implant is a useful method to restore the hearing of the patients with severe and profound hearing loss. It is important for the outcomes with proper preoperative assessment, surgery and postoperative speech and hearing evaluations.
  Zhonghua er bi yan hou ke za zhi 10/2004; 39(10):579-83.
• Article: [Bilateral total deafness due to mumps and the outcome of cochlear implantation].

  Yi Wang, Keli Cao, Wendong Yang, Chaogang Wei, Zhenyu Zheng
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  ABSTRACT: Bilateral deafness due to mumps is rare. Here report three cases of bilateral total deafness due to mumps and their outcome of cochlear implantation. Three cases of bilateral total deafness due to mumps were reviewed. All patients had sudden bilateral total deafness in 3 to 7 days after mumps. 2 had vestibular symptoms. Cochlear implantation has been successful in all 3 patients. Three month after the initial mapping, Case 2 who has been wearing bilateral hearing aids and received one-year language training has the best outcome of hearing and speech than the other two. Case 1 who has been wearing one-side hearing aid and received language training of 6 months has the better outcome than case 3 who has never worn hearing aid and never received language training. Hearing loss caused by Mumps is often sudden in onset, conservative therapy have no help. Hearing aid and language training are very important to the outcome of speech perception and speech production after cochlear implantation.
  Lin chuang er bi yan hou ke za zhi = Journal of clinical otorhinolaryngology 11/2003; 17(10):602-3.
• Article: [Implication of cochlear implantation in patients with enlarged vestibular aqueduct syndrome].

  Yi Wang, Ke-li Cao, Zhen-yu Zheng, Lin-e Wang, Xiao-li Zhu, Chao-gang Wei, Xiao-wei Chen, Wei Song, Zhi-zhong Wang
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  ABSTRACT: To evaluate the intraoperative obstacles and post-operative outcomes of cochlear implantation in children with enlarged vestibular aqueduct syndrome. Between May 1995 and June 2002, 10 patients with enlarged vestibular aqueduct syndrome received cochlear implantation in Pekin Union Medical College Hospital. The clinical records of 10 cases of enlarged vestibular aqueduct syndrome were analyzed retrospectively. Via cochleostomy pulsatile clear fluid gusher occurred in 8 cases, which were easily controlled by quickly inserting the electrode array and sealing the cochleostomy with muscle tissue in each instance. The implant was inserted without difficulty in all patients. There have been no post-operatively complications, and audiologic outcome of the 10 patients with cochlear implantation were almost the same as the other patients without inner ear malformations. Five cases of them can even speak better than the other prelingual deafness that may be attributed in part to postlingual deafness. Despite pulsatile clear fluid gusher in cochlear implantation, no post-operatively complications have been found, and the outcome of these 10 patients with cochlear implantation was excellent. Cochlear implantation can be safely and effectively performed in patients with profound sensorineural hearing loss (SNHL) associated with enlarged vestibular aqueduct syndrome.
  Zhonghua er bi yan hou ke za zhi 05/2003; 38(2):104-7.
• Article: [Multi-channel cochlear implantation in patients with common cavity malformation].

  Lińe Wang, Keli Cao, Chaogang Wei, Zhiyong Zhang, Zhenyu Zheng, Xiaowei Chen, Yi Wang
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  ABSTRACT: To report the multi-channel cochlear implantation in patients with Common cavity malformation, including surgeries, pre and postoperative hearing assessments as well as outcomes of speech recognition. Multi-channel cochlear implantation surgeries have been performed in 6 cases with common cavity malformation in our hospital from May 1995 to May 2002. The transmastoid lateral semicircular canal approach was used in these cases. The postoperative outcomes of these cases are compared with 6 cases of non-malformed cochlea as a control group. Among the 6 cases, All 32 electrodes were inserted in 3 cases, 28 electrodes in 1 cases, 26 electrodes in 1 cases, 22 electrodes in 1 cases. The intra and postoperative complications of the surgeries have no significant difference compared with the surgeries of normal cochlea. The intraoperative "Ozze" occurred in 2 cases, the small CSF flowing occurred in 3 cases and no CSF flowing occurred in 1 case. Postoperative threshold in sound field were 30-40 dB recovery for all cases, and similar to the normal cochlea cases. Most of them received the similar hearing and speech recovery, compared with the result of non-malformed group. Only a few had a higher hearing threshold. The remote effect will be evaluated by long-term follow-up. Multi-channel cochlear implantation could be performed in the cases with common cavity malformation, but preoperative hearing assessments and proper images should be done.
  Lin chuang er bi yan hou ke za zhi = Journal of clinical otorhinolaryngology 02/2003; 17(1):6-8.
• Article: [Electrically evoked auditory nerve compound action potentials in Nucleus CI24M cochlear implant users].

  Xiaoli Zhu, Keli Cao, Tao Pan, Hua Yang, Yi Wang
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  ABSTRACT: To study the feasibility and clinical applicability of electrically evoked auditory nerve compound action potentials (ECAP) in young patients with Nucleus CI24M cochlear implants. ECAPs have been recorded from 37 Nucleus CI24M cochlear implant users in response to monopolar electrical stimulation of the cochlea by using the neural response telemetry(NRT) software and the hardware. Behavioral thresholds and maximum comfortable levels were measured in 12 of those patients. ECAPs could be recorded in 87.6% of all patients. Good relations were observed between ECAP threshold and behavioral threshold, but poor relations between ECAP threshold and the impedance of different electrodes. We also observed growth functions and threshold variations of ECAP across subjects for a given place as well as across electrodes within a subject. These findings might be that these particular physiological measures are related to the number of living neural fibers and the excitability of the auditory nerve to electrical stimulation. ECAPs were proved to be useful in adjusting the stimulation parameters of the cochlear implant speech processor in order to maximize an individual's performance with the device, especially in young children.
  Lin chuang er bi yan hou ke za zhi = Journal of clinical otorhinolaryngology 02/2002; 16(1):5-8.