230434 Occupational noise and cardiovascular risk by exaggerated blood pressure response at exercise in exposed workers

Sunday, November 7, 2010

Fahmy Charl Fahmy III, Ass Prof , Occupational Health Department, High Institute of Public Health, Alexandria University, Alexandria, Egypt
Fawzeya Abbas, Prof , Occupational Health Dept, High Institute of Public Health, Alexandria University, Alexandria, Egypt
Kamal Noweir, Prof , Occupational health and air pollution, High Institute of Public Health, Alexandria University, Alexandria, Egypt
There has been increasing evidence for the relationship between hypertension and other coronary risk factors, and occupational noise exposure. The objective of this study was to investigate if exaggerated blood preasure response to exercise testing is a good tool for cardiovascular risk stratification in relation to occupational noise exposure.

Methods:Normotensive male workers (Systolic blood pressure SBP < 140 mmHg and diastolic DBP <90 mmHg) in one of the industrial facilities in Alexandria from three departments of different levels of noise exposure were included [compressor operators (high noise), maintenance workers (low noise) & administrative staff (controls)]. Each group comprized 50 workers and their personal noise exposure was measured. For all participants resting and peak exercise standard ergometer test hemodynamic variables including heart rate, SBP & DBP were measured as well as other conventional coronary risk factros and perceived noise annoyance. Results showed that multivariate logistic regression with exaggerated blood pressure response at exercise as dependent variable (peak PSBP >200 mmHg and/or PDBP >95 mmHg) was independently related to noise exposure level, perceived noise annoyance, resting heart rate and LDL-cholesterol (p <0.05 for all).

Conclusions: It seems that exaggerated BP response to exercise is a reasonable tool for early detection of high risk noise exposed workers in occupational health preventive programs.

Learning Areas:
Clinical medicine applied in public health
Occupational health and safety

Learning Objectives:
Discuss non-auditory cardiovascular effects of occupational noise exposure. Explain the need for early detection of cardiovascular risk ststus among high risk working groups such as noise exposed workers.

Keywords: Occupational Health, Occupational Health Programs

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: I am an assisstant Professor of occupational health. Also, I am a preventive cardiologist. I shared the practical work of this study.
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.