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Hearing loss and hypertension among noise-exposed workers: a pilot study based on baseline data
Long Miao1, Juan Zhang1, Lihong Yin1
1Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China.
Noise-induced hearing loss (NIHL) and hypertension are prevalent in noise-exposed workers. NIHL increases the risk of developing hypertension, highlighting the need for occupational health interventions.
Area of Science:
- Occupational Health
- Audiology
- Cardiovascular Health
Background:
- Noise exposure is a significant occupational hazard.
- Noise-induced hearing loss (NIHL) and hypertension are common health issues.
- The association between NIHL and hypertension in industrial workers requires further investigation.
Purpose of the Study:
- To determine the prevalence of NIHL and hypertension.
- To examine the association between NIHL and hypertension.
- To identify risk factors for NIHL and hypertension in noise-exposed workers.
Main Methods:
- Utilized occupational physical examination data from 42,588 noise-exposed workers (2015-2017).
- Measured average binaural high-frequency threshold (BHFTA), systolic blood pressure (SBP), and diastolic blood pressure (DBP).
- Employed logistic regression to calculate adjusted odds ratios (OR) and 95% confidence intervals (CI).
Main Results:
- Prevalence rates for NIHL and hypertension were 24.38% and 25.40%, respectively.
- Higher risks were observed in males, those >35 years, with >5 years of noise exposure, >85 dB(A) exposure, and smokers.
- NIHL workers showed a significantly higher risk of hypertension (adjusted OR = 1.07, 95% CI = 1.02-1.13).
Conclusions:
- Noise-exposed workers exhibit a high risk of developing both NIHL and hypertension.
- NIHL is independently associated with an increased risk of hypertension.
- Implementing targeted occupational health strategies is crucial to mitigate these risks.
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Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.

