Objective To evaluate the inter -list equivalency of the disyllabic materials for Mandarin speech perception test (MSP) by measuring the speech recognition score of patients with cochlear implant (CI) .Methods According to Latin -square design ,disyllabic recognition scores (quiet background) were measured for each of the 10 phonemically balanced lists in 50 Mandarin-speaking CI users(aged 30 .44 ± 12 .71 years)in sound field .RM -ANOVA was administered to confirm the list equivalency .Results The sentence recognition scores were 59 .26% ± 23 .49% ,64 .31% ± 23 .35% ,59 .97% ± 23 .07% ,62 .40% ± 25 .16% ,62 .75% ± 24 .47% ,62 .29% ± 23 .55% , 62 .85% ± 24 .60% ,61 .35% ± 23 .73% ,61 .82% ± 25 .28% ,58 .83% ± 25 .13% ,respectively for the 10 lists .There was no significance difference in sentence recognition scores across the 10 disyllabic lists [F(9 ,490)=0 .255 ,P=0 .986>0 .05] .Conclusion The good inter -list equivalency of the disyllabic materials for Mandarin speech perception test (MSP) has been proved to be useful for assessing speech recognition performance of Mandarin -speaking CI users .

BACKGROUNDCochlear implant surgery is widely practiced. Minimal incision cochlear implant surgery has been developed with the aims of reducing the impact of surgery on the patient and improving cosmesis while maintaining the low morbidity of conventional wider access approaches. This study aimed to assess the surgical technique and complication rate of minimal incision cochlear implantation (MICI) for children and adults.

METHODSData for this study were obtained via a retrospective analysis. Totally 378 patients were included in the study. All patients received minimal incision cochlear implantation, using the skin protector during the process of the operation. The surgical complications of MICI were recorded in a spreadsheet format. The incidence of major and minor complication were analyzed, and appropriate treatment was provided.

RESULTSA total of 40 (10.5%) complications were noted in the study. There were 0 life-threatening, 9 major, and 31 minor complications. Of the nine major complications, five were device failures, one developed infection and extrusion, and three required receiver-stimulator repositioning.

CONCLUSIONSMICI is as safe as standard cochlear implantation (SCI) and affords with it other benefits. Eliminating the scalp flap avoids devascularization and minimizes the opportunity of flap infection or necrosis. Complications not related to the flap are similar to SCI.

Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; Cochlear Implantation ; methods ; Female ; Humans ; Infant ; Male ; Middle Aged ; Minimally Invasive Surgical Procedures ; methods ; Retrospective Studies ; Young Adult

Objective: To discuss the benefit of using transmastoid slotted labyrinthotomy approach (TSLA) and customized electrode for common cavity deformity (CCD) patients, and to evaluate the audiological outcomes. Methods: A retrospective analysis of the intraoperative monitoring data and postoperative auditory outcomes of 10 CCD cases who received cochlear implantation in Beijing Tongren Hospital,Capital Medical University from April 2016 to December 2017, was conducted using TSLA and customized electrod as a test group.At the same time, 10 cases of age and gender matched children with severe or severe sensorineural hearing loss and normal inner ear structures were recorded as a control group. Four questionnaires were collected from the two groupspre-operative, 6 months and 1 year after start-up. The Wilcoxon signed rank sum test was used to compare the scores of different time points. Rank sum test of two independent samples was used to compare the scores between different groups. Results: None of the patients exhibited CSF leakage or facial paralysis after operation. The average impedance of 8 CCD children in the experimental group was below 5 kΩ. The total extraction rate of auditory neural response telemetry (ART) of all stimulating electrodes was 55% (33/60), and the amplitude of the electricity induced complex action potential (ECAP) of electrodes at different positions ranged from 50.69 to 170.3 μV.The average surgical time of the TSLA group was 46.4 min, shorter than the traditional approach.There was significant difference between the scores of pre-operative, 6 months and 1 year after start-up for the TSLA group(categories of auditory performance,CAP: 2.0 (2.0,3.0) vs. 4.0 (3.8,4.0) , Z=-3.109, P=0.002; speech intelligibility rating,SIR: 2.0 (2.0,2.3) vs. 3.0 (2.8,4.0) , Z=-2.952, P=0.003; meaningful use of speech scale,MUSS: 4.0 (3.3,6.0) vs. 9.0 (6.0,11.8) , Z=-3.421, P=0.001; meaningful auditory integration scale, MAIS or infant-toddler and meaningful auditory integration scale, IT-MAIS: 5.5 (3.8,9.0) vs. 15.5 (10.8,18.5) , Z=-3.522, P=0.000 for the latter two).In addition, The scores of the TSLA group were significantly worse than the control group at 6 months and 1 year after start-up.The high-resolution CT scan showed good adhesion of the electrodes without displacementone week and one year after surgery. Conclusions For CCD patients, TSLA and customized electrode is recommended due to lower surgical difficulty and post-operative risk, shortened surgical time; Intraoperative ART monitoring can be used to determine the integrity of the auditory pathway. Children with common cavity deformity have a longer period of auditory rehabilitation, and the individual differences in speech rehabilitation are significantly different, which is significantly worse than those with normal structure.