Blood Lipid Level, Electrocardiogram and Myocardial Enzyme Level in Occupational Noise Exposure Population and Analysis of Health Education Effect

Vollständiger Abstract

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Objective: This study aimed to investigate the association between occupational noise exposure and cardiovascular-related indicators and evaluate the effect of targeted health education. Methods: A cross-sectional survey was applied, combined with the evaluation before and after health education. Workers who underwent occupational health examinations from April 2022 to October 2023 were selected. On the basis of workplace monitoring, 204 workers with LAeq, 8h ≥ 85 dB(A) were assigned to the noise-exposed group, and 190 workers with LAeq, 8h ≤ 80 dB(A) and no high-intensity noise history were assigned to the non-exposed group (total N = 394). Blood lipid levels [high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C), total cholesterol (TC) and triglyceride (TG)] and myocardial enzyme levels [creatine kinase (CK), aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase (LDH) and α-hydroxybutyrate dehydrogenase (α-HBDH)] were measured in the two groups. The dyslipidaemia and electrocardiogram (ECG) abnormalities of the two groups were analysed. The noise exposure group was given targeted health education for 6 months. Results: The noise exposure group had higher TG, TC, LDL-C, CK, LDH and α-HBDH levels (all P < 0.05), lower HDL-C level ( P < 0.05), higher dyslipidaemia (48.04% vs. 26.32%) and ECG abnormality rates (40.29% vs. 15.26%) than the non-exposed group. After health education was provided, all abnormal indicators in the noise-exposure group improved significantly ( P < 0.05), with the ECG abnormality rate decreasing from 40.7% at baseline to 22.55% after the nursing. Conclusion: Occupational noise exposure is associated with adverse cardiovascular-related indicators. Targeted health education can effectively improve these outcomes, providing evidence for occupational health protection.