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Scholars Journal of Applied Medical Sciences | Volume-8 | Issue-03
An Annoyance and Sleep Disturbance Related to Environmental Noise Exposure Outside in Dhaka Airport Area
Dr. Abul Bashar, Dr. Nusrat Khan, Dr. Abul Eshrat, Dr. ASM Shahidullah
Published: March 13, 2020 | 87 112
DOI: 10.36347/sjams.2020.v08i03.016
Pages: 881-886
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Abstract
Background: Noise has been shown to fragment sleep, reduce sleep continuity, and reduce total sleep time. Sleep is a biological imperative and a very active process that serves several vital functions. Undisturbed sleep of sufficient length is essential for daytime alertness and performance, quality of life, and health. Methodology: A cross sectional study is to estimate the degree annoyance and sleep disturbance related to soud occupational noise exposure in Dhaka Airport Area at 100 people. The municipality is characterized by homogeneous social structure and living conditions of the residents. For noise measurements, a Noise Level Analyzer was used. Three measurements were per formed at daytime (between 9 and 10:30 am, 2 and 3:30 pm, and 6 and 7:30 pm) and two at night (between midnight and 1:30 am, and 3:30 and 5:00 am). Equivalent noise levels (Leq) were automatically calculated as continuous steady noise levels that would have the same total Aweighted acoustic energy like the real fluctuating noise measured over the same period. Results: Majority 35(35.0%) patients had sound level 55-60 dB (LAeq,24 hour) followed by 21(21.0%) 60-65 dB (LAeq,24 hour), 19(19.0%) <55 dB (LAeq,24 hour), 17(17.0%) 65-70 dB (LAeq,24 hour) and 8(8.0%) had >70 dB (LAeq,24 hour). Regarding cardiovascular effect, 15(15.0%) had myocardial infarction, 13(13.0%) hypertension, 9(9.0%) ischaemic heart disease, 5(5.0%) stroke. Regarding psychological effects 12(12.0%) had depression, 7(7.0%) anxiety, 3(3.0%) fatigue, 2(2.0%) primary insomnia and 2(2.0%) impaired concentration. Regarding other effects, 7(7.0%) had headache, 4(4.0%) visual or hearing impairment, 3(3.0%) obstructive sleep apnoea, 2(2.0%) effect on birth weight. Conclusion: The study evaluated the level of annoyance and sleep disturbance that is perceived by the residents of Niketon Housing Project. It was also provide information about the various sources of environmental noise perceived by the dwellers. It is to estimate.....