According to the Technical Specification for Occupational Health Surveillance (GBZ 188-20 14), occupational health examination includes routine medical examination items and special medical examination items. Routine physical examination refers to the general health examination and health examination with harmful factors for most occupational diseases.
When workers exposed to noise need to be examined, they need to do pure tone air conduction hearing threshold test.
It should be noted that in addition to comprehensive physical examination, occupational examination items related to noise should also pay attention to internal medicine examination, otolaryngology examination, hearing and hearing examination, blood routine, urine routine and electrocardiogram.
If you are exposed to toxic and harmful heavy metals for a long time, the content of heavy metals in blood, such as blood lead, should be tested separately. For jobs with visual impairment such as electricians, color vision inspection should be carried out in the physical examination items.
The hazards of noise to human body are:
1, hearing system damage. Long-term exposure to a certain intensity of noise may cause harm to people's hearing system. Mainly manifested in: making people's hearing sensitivity decline, language reception and signal discrimination ability is poor; Tinnitus, unprovoked buzzing or other sounds that do not actually exist; The voice I heard was unreal, as if suffocating; It is difficult to talk with people and can't hear what others are saying; It will lead to serious hearing loss and occupational noise deafness.
2. Damage to multiple systems and organs Through research, it is found that noise will also affect the normal physiological functions of other human systems. Mainly manifested in: neurasthenia syndrome in the nervous system, autonomic nervous system dysfunction; Decreased gastric juice in digestive system and decreased appetite; The blood pressure of cardiovascular system is unstable; The endocrine system is characterized by hyperthyroidism, enhanced adrenal cortex function, sexual dysfunction, menstrual disorder and other symptoms.