The Significance and Structure Analysis on Function of an Information System for Medical Center of Clinical Audiology (MCCAIS301)Based on Hospital Information System / 听力学及言语疾病杂志

Objective To design and develop a Information System for Medical Center of Clinical Audiology , (MCCAIS301 ) .Methods The system framework was established by developing software ,constructing user platform and creating database .An implication procedure was also established for clinical use for the MCCA IS301 .The MC-CAIS301 was connected with the Hospital Information System (HIS) in order to connect the equipment in the auditory clinical center and other clinical database system .Results The MCCAIS301 was a new database system for hospital in-formation management specifically designed for audiological tests .It provided an extra functions of the existing HIS system .The MCCAIS301 could store the testing results from more than ten different hearing instruments made from five different companies .The data from the MCCAIS301 could be transferred to the HIS system .The results of the MCCAIS301 could be retrieved and analyzed using the HIS system .MCCAIS301 system had nine sets of standardized hearing testing results ,five output formats and three statistical analyzing functions .Conclusion The MCCAIS301 is an effective information management system which has a strong practical use to improve the efficiency of daily audiology data analysis .The MCCAIS301 using digital technology moves the audiology data analysis from a manual low efficient stage to an effective and intelligent level .

The characteristic of enlarged vestibular aqueducts syndrome in pure tone audiometry: low frequency air-bone gap / 临床耳鼻咽喉头颈外科杂志

OBJECTIVE@#The purposes of this study was to analyse the significant of low frequency air-bone gap in enlarged vestibular aqueduct (EVA) patients according to the pure tone audiogram and the benefit for clinic diagnosis of the EVA.@*METHOD@#The audiology testing include (1) play audiometry or pure tone audiometry, tympanometry, middle ear muscle reflex thresholds and stapedius muscle reflex; (2) High-resolution computed tomography (CT) scan of the temporal bone and magnetic resonance imaging was used for diagnoses the EVA.@*RESULT@#All the 78 patients (154 ears) were diagnosed as the typical EVA by CT or MRI. Inner ear malformations were found in 3 ears otherwise the structures of middle ear in all the patients were absolutely normal. The audiology analysis showed 154 ears were type A tympanogram including 126 ears with typical A, 25 ears with As, 3 ears with Ad type. In the 250 Hz pure-tone test:A-B gap were observed in 126 ears(126/154,81. 8%) with the different hearing loss degree: 1 ear mild, 11 ears moderate, 19 ears moderate severe, 40 ears severe and 53 ears profound. In the 500 Hz pure-tone test: A-B gap were found in 102 ears(102/154, 66. 2%) with the different hearing loss degree: 9. ears moderate, 17 ears moderate severe, 35 ears severe and 41 ears profound.@*CONCLUSION@#Our study suggested a 66. 2% -81. 8% possibilities to find the EVA through the pure-tone audiometry firstly in the basis of the normal tympanograms with the significant A-B gap.

A universal newborn hearing screening with hearing and deafness predisposing genes in 1234 newborn babies / 中国耳鼻咽喉头颈外科

G heterozygote carriers.The carrying rate of deafness gene was 26‰(32/1234).In the 32 carriers,there are 5 babies showed 'refer' at the first step of hearing screening.In the 1234 babies,112 babies showed 'refer' at the first step of hearing screening.CONCLUSION Deafness gene screening can make up for the deficiencies of the universal newborn hearing screening,and should be used in this kind screening more widely.

Normal Values of Auditory Brainstem Responses for Infants of Different Ages / 听力学及言语疾病杂志

Objective To find the normal range and features for auditory brainstem responses(ABR)of infants within six months,and the basic parameters for identifying the hearing impaired infants.Methods May 2006 to May 2008,60 normal infants and 20 normal adults received the ABR tests.The infants were divided into three groups:group A(6 weeks),group B(3 months)and group C(6 months).Each group consisted of 20 infants(40 ears)and the ABR data were statistically analyzed.Results At 100 dB nHL,the waveⅠ,Ⅲ,Ⅴ latencies of ABR for 6-week infants respectively were 1.49?0.08 ms,4.42?0.16 ms and 6.61?0.25 ms,for 3-month infants,1.47?0.07 ms,4.35?0.20 ms and 6.50?0.25 ms,for 6-month infants,1.45?0.07 ms,4.17?0.15 ms and 6.32?0.22 ms.At 80 dB nHL,the waveⅠ,Ⅲ,Ⅴ latencies of ABR for 6-week infants were 1.63?0.08 ms,4.52?0.17 ms and 6.74?0.26 ms,respectively,for 3-month infants,1.64?0.11 ms,4.44?0.20 ms and 6.67?0.26 ms,for 6-month infants,1.60?0.11 ms,4.27?0.16 ms and 6.43?0.24 ms.As the intensity of stimulating signals decreased,the peak latency of ABR became more delayed.The peak latencies of Ⅲ,Ⅴ waves and interval peak latencies of Ⅰ-Ⅲ and-Ⅴ waves for the infants were more delayed than those for adults,and became shorter with the increase of the infants' ages,but they failed to reach adults' levels even for 6-month infants.However,the length of wave Ⅰ of ABR for infants of different months was close to that for adults.The thresholds of ABR for the infants of different ages were not significantly different,all being close to the values for adults.Conclusion This study has analyzed the ABR wave features for the infants of three ages and this can help to define the reference ranges for the infants and to provide the parameters for early diagnosis of hearing loss among the infants.