[Cochlear implantation in patients with secretory otitis media].

OBJECTIVE: To evaluate the indications and surgery time of cochlear implantation in patients with otitis media with effusion (OME). METHODS: Cochlear implantation was performed in 26 patients with bilateral profound sensorineural hearing loss and OME. Non-Surgical Treatment was conducted for OME before the following implantation. According to the standards of the indications and surgery time, surgery was carried out. During the process of surgery operation, related lesions of OME were completely removed and proper drainage was then constructed. After the surgery, the patients were regularly followed up, and the effective of cochlear implantation was evaluated. RESULTS: Unilateral ear of 26 patients was successfully operated. Among them, 5 cases were left ears and the remaining was right ears. All implant devices worked normally after 1 month. Had been followed up from 13 months to 4.3 years, 19 patients with OME were healed and the remaining was turning better. No evidence showed phenomenon of the eardrum perforation and acute attack of OME. CONCLUSIONS: Once the indications of cochlear implantation in patients with OME are guaranteed, the surgery should be conducted as early as possible. The complications of cochlear implantation in patients with OME can be effectively avoided through proper treatment in different stages.

Application of intraoperative round window electrocochleography for screening the patients with auditory neuropathy.

BACKGROUND: Most patients with auditory neuropathy (AN) could receive good even the best effects after cochlear implantation. How to diagnose AN objectively and accurately is very important. In this study, we screened the patients with AN according to the presence or absence of compound action potential (CAP) of intraoperative round window electrocochleography (RW ECochG). METHODS: Intraoperative RW ECochG was performed on 32 patients with profound sensorineural deafness, who had normal cochlea during cochlear implantation surgery under general anesthesia in the standard operating room. The cochlear microphonic (CM) and CAP of RW ECochG was observed and recorded. RESULTS: The presence of CM but the absence of CAP of RW ECochG occurred in 12 among the 32 patients. They were suspected to suffer from AN. The rest patients who had CM and CAP of RW ECochG were thought not to suffer from AN. CONCLUSION: Application of intraoperative RW ECochG during the cochlear implantation surgery may objectively and accurately screen the patients with AN, and can give a meaningful clue for implanted device working.

[Singing formant analysis of KunQu actors in their mutation and grown-up].

OBJECTIVE: To compare the singing formant differences between successful opera actors and non-successful opera actors during their adolescence period, and to compare the same index between adolescence and adult period of successful actors. METHODS: From 1985 to 1986, the author had 21 adolescent actors' voice recorded, all of them were from Beijing KunQu opera troupe. In 2000, all the 21 subjects had their voice recorded and singing formant (Fs) analyzed by using computer and sound spectrograph, 7 of them had become adult actors, others quitted their actors career after adolescents period. RESULT: Successful actors have obvious Fs, and stronger acoustic energy; successful actors had weaker Fs value during adolescence period than during adult period (t = 2. 9600, P < 0.05). CONCLUSION: Fs's presence and its acoustic energy were important to evaluate adolescent actors future locality potential.

[Pre-operation evaluation and intra-operation management of cochlear implantation].

OBJECTIVE: To summarize pre-operation evaluation experiences in cochlear implantation. METHODS: Performing auditory evaluation and image analysis seriously in 158 severe hearing loss or total deaf cases before cochlear implantation, comparing their performance with the findings during and post operation. RESULTS: Among the total 158 cases, 116 cases with normal structure, 42 cases with the abnormal findings of the inner or middle ear. Stapedial gusher happened in 6 cases, 1 case was not predicted before operation. Except 1 case with serious malformation, the findings of other 157 cases in operation were consistent with the pre-operation evaluation. We helped all patients reconstruct auditory conduction with cochlear implantation, and the average hearing level up to 37.6 dB SPL. CONCLUSIONS: Performing image analysis seriously before operation and planning for operation according to HRCT can do great help to cochlear implantation. The operation under the HRCT instruction has less complications.