Assessment of ambient noise levels in the intensive care unit of a university hospital.

Background: Noise is recognized as a source of hazard to the patient's environment. Studies have also shown that it has a direct impact on mortality and morbidity as a result of sleep deprivation which affects the immunity of critically ill patients.

Objectives: The aim of this study was to measure levels of environmental noise in a six- bed, open-plan general medical intensive care unit (MICU).

Chronic occupational exposure to lead and its impact on oral health.

Chronic Lead exposure favours the formation of cheilitis, fissures, ulcers and epithelial desquamation of the tongue, palate and other parts of the oral mucous membranes. The tissues of oral cavity may be affected by toxic agents either by direct action as in exposure to sulfuric acid fumes or through systemic exposure as in poisoning with heavy metals e.g.

Biomonitoring of genotoxic risks and haematological changes in workers in rubber industry.

Several substances used in rubber processing are known to be of genotoxins and haematotoxins. Such as benzene, phenols, amines amides, naphthalene and benzo(a)pyrene. Twenty-five exposed workers from a rubber factory were compared with twenty-five controls working as administrative staff in the same factory.

Biochemical changes and environmental factors in manual and semiautomatic bakeries.

The bread-making industry involves a combination of hazardous exposures. A biochemical and environmental study was conducted on manual and semi-automatic bakeries. The aim of this study was to investigate different biochemical changes and environmental factors among bakery workers.