ON THE USE OF INTERAURAL LATENCY DIFFERENCE (ILD) AND INTERAURAL INTERPEAK LATENCY DFFERENCE (IPLD) TO DIFFERENTIATE SENSORINEURAL HEARING LOSS
- VernacularTitle:用耳间V波潜期差和Ⅰ～Ⅴ间期差鉴别感音神经性聋
- Author:
Qinsheng BAI
- Publication Type:Journal Article
- Keywords:
Brainstem auditory evoked potential;
sensorineural hearing loss
- From:
Journal of Xi'an Jiaotong University(Medical Sciences)
1981;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
ILD and IPLD of Brainstem evoked potential (BSEP) of 20 hearing-normal subjects and 100 patients with unilateral sensorineural hearing loss (SNHL) were reported in this article. The results obtained in different Sound Level, with or without rectification of latency of V-wave, and with rectification by different methods were compared and analysed. The results of ILD and IPLD either in same Sensoral Level (SL) or in the maximum peak Equivalent Sound Level (PeSPL) had no statistical difference, It was needed to rectify V-wave latency when ILD be done, but no need when IPLD be made. The difference of some ms% was found only in the V-wave lateney rectified by Selter's and Arslan's methods, selter's method is simpler and easier to do in the clinieal practice. It was also observed when average hearing threshold of 2-4 kHz was below 50 dB IlL, the lateney of V-wave was not necded to rcetify when more than 90 dB HL. it was not possible to be rectified The problem concerning ILD and IPLD equalling to zero or negative value was discussed. It was suggested that the detection of more sensitive index was necessary. BSEP must be combincd with Electrocochlcography, Electronystagmogaphy, Stapediuum Muscle Reflex etc at the present time.
