Introduction: Noise and vibration are believed to have a synergy effect which creates hearing problems. The experimental research founds that noise-induced hearing disorders not only damage the hair cells which function as hearing receptor but also caused neural degeneration in the auditory pathways. Not much attention is given to the noise-induced auditory pathways disorders nowadays. Brainstem Auditory Evoked Potential (BAEP) examination is one of modalities which can be used to assess the auditory pathways functional disorders. Aim: To find out the description and prevalence of auditory pathways functional disorders among bajaj (a three-wheel vehicle in Jakarta) drivers who are exposed to noise and vibration based on BAEP examination and other risk factors which influence it. Method: Cross-sectional research was conducted on 45 bajaj drivers in Electrophysiology Laboratory Neurology Department RSUPN Cipto Mangunkusumo, Jakarta, in May-June 2010. Result: Of the 45 subjects, an abnormal absolute latency in wave I in the right 37%, left 40%; wave III in the right 4.4%, left 8.8%; wave V in the right 13.3%, left 26.6% and abnormal inter-peak latency (IPL) I-V in the right 11%, left 20%; IPL I-III in the right 6.7%, left 4.4%; IPL III-V in the right 20%, left 26.7%. The prevalence of auditory pathways functional disorders among bajaj drivers who are exposed to noise and vibration based on BAEP examination is 60%. However, this research did not find any significant relation between the risk factors ( i.e work duration, number of working hours, blood pressure, smoking habit and consumption of alcohol drink) and auditory pathways functional disorders statistically. On the other hand, subjects with diastolic hypertension likely show auditory functional disorders three times higher than subjects with the normal diastolic blood pressure and pre-hypertension (OR: 3.37). The relation to those risk factors needs to be confirmed with an appropriate research design, a larger number of samples and a more homogenous population. Conclusion: Abnormal BAEP description support that there are functional disorders to auditory pathway of the subjects who are exposed to noise and vibration.
|Publication status||Published - 2010|