hazard & risk: e.g. safety and health in hospitals · identifying and controlling job risk...
TRANSCRIPT
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HAZARD & RISK: e.g. SAFETY AND HEALTH IN HOSPITALS
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Hazard
Exposure
Risk of
Outcome/Effect
Control Measures
rrr
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Hospital Universiti Kebangsaan Malaysia (HUKM)
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Hazard Classification
Physical Noise, Heat, Vibration, Ionizing radiation,
Pressure, Poor lighting, Electricity
Chemical Solid/liquid/semisolid/gas
Heavy metal, solvent etc
Biological Bacteria, Virus, Parasite
Psychological Stress
Ergonomic problem Lifting heavy object, poor posture, repeated
movements
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Biological Hazards
•Hepatitis B
•HIV/AIDS
•Tuberculosis
•SARS
•MERS-CoV
•Ebola
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Needlestick Injuries, MOH (1997-2002)
0
100
200
300
400
500
600
700
800
1997
1998
1999
2000
2001
2002
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INCIDENCE RATE OF NEEDLESTICK INJURIES 2002
9.9 4,535 45 MEDICAL
ASSIST.
24.1 6,836 165 DOCTOR
24.7 687 17 DENTAL
OFFICER
4.1 2,153 9 MLT
8.5 21,104 181 NURSE
7.3 6,823 50 JM/MIDWIFE
12.3
2,512 31 ATTENDANT
INCIDENCE
RATE/1,000
NO. AT
RISK
NO OF
CASES
CATEGORY
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Hepatitis B and Health Care Workers
Prevalence among blood donors : 1.55% HBsAg positive (45124 screened in 1993)
Liver cancer - 70% of cases are due to HBV
Prevalence among HCW are 3-5 times higher than the general population
Risk associated with :
Higher frequency of exposure to blood, body fluid and contaminated sharps
Longer duration of work- in contact with high risk groups
High prevalence of Hepatitis B among patient
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Severe Acute Respiratory Syndrome
Issues arise:
Case management- specific protocols
Appropriate personal protective equipments: mask, respirators, gowns, gloves
Efficient ventilation system
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detergents pesticides
formaldehide
pharmaceuticals
toxic
wastes
HAZARDOUS CHEMICALS
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Designated area for chemical carcinogens
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DERMATITIS DUE TO DETERGENT EXPOSURE
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A trainee staff nurse complained of skin lesion
on both hands - worse after using latex glove
Patch test: positive to latex allergen
Use alternative glove: latex-free glove
Case report: Allergic
Contact Dermatitis (Latex
allergy)
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Physical hazards
•Ionizing Radiation
•Noise
•Vibration
•Heat
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Ionizing Radiation- Results of injury:
Nucleic Acids: Damaged chromosomes
Acute effects: damaged bone marrow
Chronic effects: cancer, thyroid damage, cataracts, sterility, growth and developmental defects, and decreased life expectancy
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Case Report: Noise Induced Hearing Loss
A 55 year old medical assistant, worked at POP Room & Orthopaedic OT
Presented with progressive and marked hearing loss, associated with depression
30 years exposure to noise (85-100 dBA)
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Ergonomic Problems
•Lifting heavy objects/patients
•Awkward posture
•Static posture-prolonged
standing
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Ergonomics: People-centered
Facilities, Equipment, Environment
Management system
PEOPLE
Fitting workplace conditions and job demands to the capabilities of the working population
Through a process of identifying and controlling job risk factors
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Rubber flooring for the slope and metal rail
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Congested work stations
Non-ergonomic chairs
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Case Report: Injury while manual handling
55 y.o staff nurse @ Ortho Ward
c/o: Acute, severe pain at lower back while transferring an obese patient from bed
Diagnosis: Compression Fracture L1
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Computer Work Station
•‘Typing Injuries’
•Eye Strain
•Back Pain
•Psychological Stress
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Psychosocial factors
•Stress
•Depression
•Anxiety
•Burnout
•Shift work
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Stressor at Workplace
S- Support
T-Task
R-Role
E-Environment
S-Shift work
S-Superior
O-Organization
R-Reward not sufficient
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Signs of Stress
Your Body
Aches and pain
Sweating, dizzy, breathless
Frequent infections
Asthma, cardiac problems,
hypertension
How you behave
Accidents/mistakes
Sleeping problems
Take drugs
Problematic social behavior
How you think (cognition)
Poor concentration & memory
Poor organization and decision
making
Less creative in problem solving
Hypersensitive to criticism
How you feel (emotion)
Anxious
Depressed
Angry/frustrated
Bored
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Hazard
Exposure
Risk of
Outcome/Effect
Control Measures
rrr
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STEPS OF RISK ASSESSMENT
1. Look for hazards
2. Decide who might be harmed and how
3. Assess the likelihood of exposure
4. Evaluate risks from hazards
5. Decide whether existing precautions adequate or
more should be done
6. Record findings
7. Review assessment periodically.
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Hazard Classification
Physical Noise, Heat, Vibration, Ionizing radiation,
Pressure, Poor lighting, Electricity
Chemical Solid/liquid/semisolid/gas
Heavy metal, solvent etc
Biological Bacteria, Virus, Parasite
Psychological Stress
Ergonomic problem Lifting heavy object, poor posture, repeated
movements
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Hazard Rating Definition in Terms of Potential to Cause Harm to
People
1 No injury/slight injury/illness – not affecting work
performance or causing disability
2
Minor injury/illness – affecting work performance such
as restriction of activities or need a few days to
recover
3
Major injury/illness – result in permanent partial
disability or affecting work performance in the long
term
4 Permanent total disability or fatality
5 Multiple fatalities (large exposed population)
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Exposure
Rating
Definition
Improbable
(1)
Exposure less than one per year
Remote
(2)
Exposure greater than one time per year
Occasional
(3)
Exposure greater than one time per month
Probable
(4)
Exposure greater than one time per week
Frequent
(5)
Potential exposure one or more time per shift
or per day
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Very low
(1)
Low
(2)
Medium
(3)
High
(4)
Very high
(5)
No/slight
injury (1)
Minor injury
(2)
Major injury
(3)
Fatality/
permanent
disability (4)
Multiple
fatalities (5)
Exercise in Risk Characterization
HR= Hazard Rating
ER= Exposure Rating
Risk rating = HR x ER
ER HR
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Adequacy of Control Measures
• Suitable for protecting employees
• Effective in preventing or minimizing
exposures
• Properly maintained
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a) Elimination
b) Substitution
c) Total enclosure of process and handling systems
d) Isolation
e) Modification of the process parameters
f) Engineering control
g) Administrative
h) PPE (Personal Protective Equipment)
HIERARCHY OF CONTROL MEASURES
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Eye wash station
First Aid box Fire extinguisher
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RISK DECISION
1. RISK NOT SIGNIFICANT
2. RISK SIGNIFICANT & ADEQUATE
CONTROL MEASURES
3. RISK SIGNIFICANT & NOT ADEQUATE
CONTROL MEASURES,
4. UNABLE TO ASSESS THE RISK
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THANKS
ASSALAMMUALAIKUM WT. WBT.