Correlation Analysis Between Maximum Speech Recognition Score and other Audiometry Testing of Auditory Neuropathy Patients

LAN Lan; XIE Linyi; SHI Wei; DING Haina; LI Na; HAN Bing; WANG Dayong; ZHANG Qiujing; GUAN Jing; WANG Qiuju

doi:10.3969/j.issn.1672-2922.2015.02.006

Abstract：Objective to summarize and analyze the correlation between maximum speech recognition score(PBmax) and other objective or subjective audiometry testing results of auditory neuropathy patients, and to find out the importance for diagnosis. Methods All 106 auditory neuropathy patients(212 ears) accepted auditory testing of pure tone audiometry(PTA), acoustic immitance,maximum speech recognition score(PBmax), distortion product otoacoustic emission(DPOAE), auditory brain response(ABR), electrocochleogram (ECochG), 40Hz auditory event-related potential(40HzAERP) and auditory steady-state responses(ASSR). Analyzed the correlation between PBmax and other testing results with software of PASW Sta-tistics 18.0. Results In auditory neuropathy patients, the results of PBmax testing present negative correlation with 40HzAERP and ASSR(P<0.05). In 212 ears(106 cases) that accepted ABR testing, only 12 ears(5.7%) shown poor repeatabili-ty ABR waves, and the threshold of testing all above 80dBnHL. The PBmax score in patients who present ABR waves had significant greater than whom did not record ABR(P<0.05). Between different group patients that accepted ECochG testing, there displayed significant difference(P<0.05). The groups of–SP/AP amplitude ratio lower than 0.5 and between 0.5 and 1.0 showed the greatest PBmax scores. Conclusions There appeared close correlation between PBmax score and other objec-tive or subjective audiometry testing in auditory neuropathy patients. Those patients have lower–SP/AP amplitude ratio or record ABR waves would present greater PBmax score. The patients’pure tone hearing threshold curves and hearing loss lev-els both showed correlation with PBmax scores. The PBmax correlate to other audiometry testing to diagnose or assess audito-ry neuropathy patients. It has a certain value for auditory specialists and clinical physicians.