Noise induced hearing loss among grass trimming workers

Introduction: Grass trimming workers work every day in a noisy environment as they carry the grass trimming machine on their back, such daily exposure for many years may contribute to noise induced hearing loss. Objective: To assess the hearing status of the grass trimming workers in KB and the near...

Full description

Saved in:

Bibliographic Details
Main Author:	Jaafar, Nabeel Ibraheem
Format:	Thesis
Language:	English
Published:	2011
Subjects:	RF Otorhinolaryngology
Online Access:	http://eprints.usm.my/37922/1/Pages_from_Nabeel_Ibraheem_Jaafar-RF_OTORHINO.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-usm-ep.37922
record_format	uketd_dc
spelling	my-usm-ep.379222019-04-12T05:26:36Z Noise induced hearing loss among grass trimming workers 2011-05 Jaafar, Nabeel Ibraheem RF Otorhinolaryngology Introduction: Grass trimming workers work every day in a noisy environment as they carry the grass trimming machine on their back, such daily exposure for many years may contribute to noise induced hearing loss. Objective: To assess the hearing status of the grass trimming workers in KB and the nearby areas and to determine the prevalence of noise induced hearing loss among them. Methodology: This was a descriptive cross sectional study.The source population were from grass trimming worker works under USM Health Campus, Majlis Perbandaran Kota Bharu (MPKB) , Majlis Daerah Pasir Puteh, Bachok, Ketereh and Tumpat. The data was collected at HUSM /ORL-HNS outpatient clinic to fill the Proforma , otoscopic examination and hearing tests. Hearing tests consist of pure tone audiometry, tympanogram and distortion product otoacoustic emission. Results: A total of 77 grass trimming workers participate in this study. All of them were male with age range from 20-53 years old with majority of them fall in age group of 40-50years old. Two of the subjects were excluded as they have history of working in noisy job before and for at least 10 years. None of them use any protecting hearing device. Duration of work of grass trimmers were in between 1 to 33 years. The daily work was 4-5 hours with time of rest in between we found that 62 out 75 grass (82.7%) trimming worker have noise induced hearing loss with characteristic notch at 6 kHz , 4 kHz and 3 kHz. The noise induced hearing loss occurred in workers exposed to noise as early as two years in this job. The intensity of the noise from the machine is in between 91.3 to 100.7dB in a fluctuant manner. The left ear was the predominant side that was affected by hearing loss .All of the subjects was having mild hearing loss. Conclusion: The study showed that grass trimming job have occupational hazards of noise induced hearing loss. It occurs with one to two years working without any hearing protection device .The dip at 6kHz is a significant early sign for noise exposure. We strongly recommend that all the workers use the hearing protection device while doing grass trimming. 2011-05 Thesis http://eprints.usm.my/37922/ http://eprints.usm.my/37922/1/Pages_from_Nabeel_Ibraheem_Jaafar-RF_OTORHINO.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Sains Perubatan
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	RF Otorhinolaryngology
spellingShingle	RF Otorhinolaryngology Jaafar, Nabeel Ibraheem Noise induced hearing loss among grass trimming workers
description	Introduction: Grass trimming workers work every day in a noisy environment as they carry the grass trimming machine on their back, such daily exposure for many years may contribute to noise induced hearing loss. Objective: To assess the hearing status of the grass trimming workers in KB and the nearby areas and to determine the prevalence of noise induced hearing loss among them. Methodology: This was a descriptive cross sectional study.The source population were from grass trimming worker works under USM Health Campus, Majlis Perbandaran Kota Bharu (MPKB) , Majlis Daerah Pasir Puteh, Bachok, Ketereh and Tumpat. The data was collected at HUSM /ORL-HNS outpatient clinic to fill the Proforma , otoscopic examination and hearing tests. Hearing tests consist of pure tone audiometry, tympanogram and distortion product otoacoustic emission. Results: A total of 77 grass trimming workers participate in this study. All of them were male with age range from 20-53 years old with majority of them fall in age group of 40-50years old. Two of the subjects were excluded as they have history of working in noisy job before and for at least 10 years. None of them use any protecting hearing device. Duration of work of grass trimmers were in between 1 to 33 years. The daily work was 4-5 hours with time of rest in between we found that 62 out 75 grass (82.7%) trimming worker have noise induced hearing loss with characteristic notch at 6 kHz , 4 kHz and 3 kHz. The noise induced hearing loss occurred in workers exposed to noise as early as two years in this job. The intensity of the noise from the machine is in between 91.3 to 100.7dB in a fluctuant manner. The left ear was the predominant side that was affected by hearing loss .All of the subjects was having mild hearing loss. Conclusion: The study showed that grass trimming job have occupational hazards of noise induced hearing loss. It occurs with one to two years working without any hearing protection device .The dip at 6kHz is a significant early sign for noise exposure. We strongly recommend that all the workers use the hearing protection device while doing grass trimming.
format	Thesis
qualification_level	Master's degree
author	Jaafar, Nabeel Ibraheem
author_facet	Jaafar, Nabeel Ibraheem
author_sort	Jaafar, Nabeel Ibraheem
title	Noise induced hearing loss among grass trimming workers
title_short	Noise induced hearing loss among grass trimming workers
title_full	Noise induced hearing loss among grass trimming workers
title_fullStr	Noise induced hearing loss among grass trimming workers
title_full_unstemmed	Noise induced hearing loss among grass trimming workers
title_sort	noise induced hearing loss among grass trimming workers
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Sains Perubatan
publishDate	2011
url	http://eprints.usm.my/37922/1/Pages_from_Nabeel_Ibraheem_Jaafar-RF_OTORHINO.pdf
_version_	1747820680264548352

Noise induced hearing loss among grass trimming workers

Similar Items