L28: Chemical & Physical Hazards at Work Flashcards

1
Q

Types of chemicals that cause
occupational diseases

A
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2
Q

Types of Gases that cause
occupational diseases

A
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3
Q

Simple asphyxiants

  • Example & Occupational Exposure
A
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4
Q

Chemical Asphyxiants

  • Example & Occupational Exposure
A
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5
Q

Systemically Active

  • Example & Occupational Exposure
A
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6
Q

Upper Respiratory Irritants

  • Example & Occupational Exposure
A
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7
Q

Lung Tissue Irritants

  • Example & Occupational Exposure
A
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8
Q

Def of Dust

A
  • solid tiny particles suspended in air formed from drilling, blasting, grinding and breaking down of materials .
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9
Q

Def of Pneumoconiosis

A
  • is the presence of inhaled dust in lungs and tissue reaction against
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10
Q

Types of Dust

A

Organic:

  • Cotton

Inorganic:

  • Silica
  • Asbestos
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11
Q

CA of Byssinosis

A

Cotton

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12
Q

Occupational exposure of Byssinosis

A

Textile industry

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13
Q

Def of Byssinosis

A
  • Acute respiratory symptoms due to exposure to cotton or flax dust
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14
Q

Characters of Byssinosis

A
  • Ranging from acute dyspnea with cough & chest tightness on one or more days of working week (reversible by bronchodilator) to chronic or permanent obstructive lung disease
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14
Q

CA of Silicosis

A

❶ Mining
❷ Tunneling
❸ Glass industry
❹ Cement industry.
❺ Granite cutting & rock cutting.

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15
Q

Occupational Exposure to Silicosis

A

Silicosis

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16
Q

Def of Silicosis

A
  • A chronic disease due to inhalation of free crystalline silica
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17
Q

Characters of Silicosis

A
  • general fibrosis & miliary nodules in both lungs
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18
Q

CA of Asbestosis

A

Asbestos

19
Q

Occupational Exposure to Asbestosis

A

❶ Asbestos Mining.
❷ Boilermakers .
❸ Insulation workers .

NB:asbestos use is prohibited since 1976

20
Q

Def of Asbestosis

A
  • A disease due to inhalation of asbestos fibers
21
Q

Characters of Asbestosis

A
  • diffuse interstitial fibrosis in the lower lobe of lung & bronchiectasis .
  • progressive & continue even after stopping exposure.
22
Q

Metals & their compounds

  • Agents Causing occupational Disease
A

such as lead cause lead anemia, mercury, cadmium, manganese, arsenic, etc .

23
Q

Solvents

  • Agents Causing Occupational Disease
A

such as carbon bisulphide, benzene, chloroform, etc.

24
Q

Other Chemicals

  • Agents Causing Occupational Disease
A

such as acids, alkalis, pesticides, etc .

25
Q

Types of physical agents that cause
occupational diseases

A
26
Q

Dangerous Exposure to Noise

A
  • workplaces with continuous noise of more than 85 dB for more than 8 hrs/ d for more than 3 years
27
Q

Examples of occupational Exposure to Noise

A

❶ Weaving industry
❷ Air port
❸ Hammering

28
Q

Occupational Diseases D2 Noise

A

Noise-induced hearing loss (NIHL)

29
Q

Causes of Segmental body
vibration

A

using:

  • chain saw
  • Pneumatic & electric hand tools
30
Q

Effects of Segmental body
vibration

A

Hand-arm vibration syndrome (HAVS)

31
Q

Causes of Whole body
vibration

A

drivers

32
Q

Effects of Whole body
vibration

A

Back pain due to whole body vibration

33
Q

Examples of Ionizing radiation Exposure

A

❶ medical diagnosis &therapy
❷ nuclear energy plant
❸ nuclear weapon testing

34
Q

Effects of Ionizing radiation Exposure

A

❶ carcinogenic effects
❷ mutagenic effects
❸ chronic dermatitis
❹ cataract

35
Q

Examples of Ultra-Violet ray Exposure

A

❶ Arc welding
❷ Mercury lamp

36
Q

Effects of Ultra-Violet ray Exposure

A

❶ eye: corneal ulcer

❷ skin: erythema - basal cell carcinoma

37
Q

Examples of Infra-red ray Exposure

A

❶ glass, iron, steel industries
❷ Home electrical appliances

38
Q

Effects of Infra-red ray Exposure

A

❶ Eye: cataract (post polar)
❷ skin: pigmentation

39
Q

Examples of Exposure to Increases in pressure

A

Increases in pressure e.g. descent during an underwater dive, descent during a plane flight

  • Exposed occupations:
    ❶ divers
    ❷ caisson workers
    ❸ airplane crew
    ❹ miners
40
Q

Effects of Exposure to Increases in pressure

A

dysbarism refers to medical conditions resulting from changes in ambient pressure

❶ Decompression sickness (the most common type)
❷ Nitrogen narcosis
❸ Barotrauma

41
Q

Examples of Exposure to Decreases in pressure

A

coming up from a caisson, or ascending a mountain

  • Exposed occupations:
    ❶ divers
    ❷ caisson workers
    ❸ airplane crew
    ❹ miners
42
Q

Effects of Exposure to Decreases in pressure

A

dysbarism refers to medical conditions resulting from changes in ambient pressure

❶ Decompression sickness (the most common type)
❷ Nitrogen narcosis
❸ Barotrauma

43
Q

Examples of High temp Exposure

A

❶ Foundries
❷ bakeries
❸ engine room
❹ construction
❺ laundries

44
Q

Causes of High temp Exposure

A

❶ Heat exhaustion
❷ Heat stroke
❸ Heat cramps
❹ skin changes
❺ Thermal lung injuries

45
Q

Examples of Low temp Exposure

A

❶ soldiers
❷ meat packers
❸ refrigerators
❹ divers
❺ Manufacture of ice & ice cream

46
Q

Effects of Low temp Exposure

A

Hypothermia means lowering core body temp to or below 35̊C

❶ Excessive general body chilling
❷ Frost bit