LABORATORY SAFETY AND INFECTION CONTROL Flashcards
used for dangerous chemicals
Chemical fume hood
protect the users
chemical fume hood
no hepa filter
chemical fume hood
exhaust air outside the building
chemical fume hood
used for infectious biological agents, protects the user, the environment and the material
Biosafety cabinet
possess HEPA filter does not exhaust air outside the building without decontamination
Biosafety cabinet
HEPA
HIGH EFFICIENCY PARTICULATE AIR
A device that encloses a working area
to protect workers from aerosol
exposure and infectious disease
agents.
Biosafety cabinet
the air that contains the
infectious materials is sterilized, either
by heat, UV light or passage through a
high-efficiency particulate (HEPA)
resistance filter.
BSC
Open-fronted type of cabinet with
negative pressure (ventilated
cabinets)
CLASS I CABINET
It allows room (unsterilized) air to
enter the cabinet, circulate around
the area and expose the material
within; only the air to be exhausted
is sterilized using a HEPA filter.
CLASS I CABINET
It is used for biosafety levels 2 and 3
agents
CLASS I CABINET
It is also known as the laminar flow BSC
CLASS II CABINET
The most commonly used BSC in a clinical
microbiology laboratory.
Class IIA
Sterilizes the air using HEPA filter that flows over the infectious material and the air to be exhausted.
CLASS II CABINET
has fixed opening; 70% of the air is recirculated
Class IIA
variable sash opening; used for chemicals, radioisotopes and carcinogens.
Class IIB
Provides the highest level of
safety to the worker
CLASS III CABINET
The air coming into and going out
of the cabinet is sterilized using
HEPA filter and the infectious
material within is handled with
rubber gloves that are attached
and sealed in the cabinet.
CLASS III CABINET
It is used for BSL 4 agents.
CLASS III CABINET
Saccharomyces cerevisiae, E. coli K-12, and non-infectious bacteria
BSL-1
Hepatitis a virus, Streptococcus pyogenes, Borrelia burgdorferi (Lyme disease), Salmonella species
BSL-2
Yersinia pestis (plague), Mycobacterium tuberculosis, SARS, rabies virus, West Nile Virus, hanta viruses
BSL-3
Ebola virus, smallpox virus
BSL-4
Not known to consistently cause disease in healthy adult humans, and of minimal potential hazard to laboratory personnel and the environment.
BSL-1
Moderate potential hazard to personnel and the environment. Includes bacteria and viruses that cause mild disease to humans, or are difficult to contract via aerosol in a lab setting.
BSL-2
Microbes there can either indigenous or exotic, and they can cause serious or potentially lethal disease through respiratory transmission.
BSL-3
Dangerous and exotic, posing a high risk of aerosol-transmitted infections. Infections caused by these microbes are frequently fatal and without treatment or vaccines.
BSL-4
- No Containment
- Defined organisms
-Unlikely to cause disease
BSL-1
- Containment
- Moderate Risk
- Disease of varying severity
BSL-2
- High Containment
- Aerosol Transmission
- Serious/ Potentially lethal disease
BSL-3
- Max Containment
- “Exotic”, High- Risk Agents
- Life- threatening disease
BSL-4
E. coli
BSL-1
Influenza, HIV, Lyme Disease
BSL-2
Tuberculosis
BSL-3
Ebola Virus
BSL-4
Agents that present minimal potential hazard to personnel & the environment.
BSL-1
Agents associated with human disease & pose moderate hazards to personnel & the environment.
BSL-2
Indigenous or exotic agents, agents that present a potential for aerosol transmission, & agents causing serious or potentially lethal disease.
BSL-3
Dangerous & exotic agents that pose a high risk of aerosol-transmitted laboratory infections & life-threatening disease.
BSL-4
Pass-thru autoclave with Bioseal required in laboratory room.
BSL-3
Pass-thru autoclave with Bioseal required in laboratory room.
BSl-4
These are agents that pose the greatest public health threat.
Category A Agents
They are easily transmitted and highly infectious.
Category A Agents
Smallpox, Bacillus anthracis, and Francisella tularensis
Category A Agents
These are agents with moderate morbidity and low mortality.
Category B Agents
Not easily transmitted as category A agents.
Category B Agents
Coxiella burnetti, Burkholderia pseudomallei, and Rickettsia
Category B Agents
These are the emerging pathogens
Category C Agents
Viruses that causes yellow fever, dengue, influenza and SARS
Category C Agents
- Hand Hygiene
- Gown
- Respiratory Protection
- Eye Protection
- Gloves
Donning Your PPE
- Gloves
- Eye Protection
- Gown
- Respiratory
5.Hand Hygiene.
Doffing your PPE
Substances which singly or in combination have a significant threat or hazard to human health or to the environment and require special handling.
Hazardous Wastes
Should be calibrated against a reference thermometer from the National Institute of Standards and Technology (NIST).
Thermometer Calibration
Thermometer that differ by ___ from the reference thermometer should be disposed.
> 1degree C
Thermometer should be checked ___ for the presence of gas bubbles.
daily
Immersed in glycerol. (Prevents fluctuations when door is opened)
Thermometer Calibration
The temperature used for calibration are:
-20 °C, 2°C to 8°C, 37 °C, and 56°C
The percentage of carbon dioxide must be checked ____.
Daily
The speed or revolution per minute (rpm) must be checked _____ using a tachometer.
Checked twice a year
culture media can be checked based on their performance and sterility., and
records should be kept for at least two years.
Media that are not quality-controlled by the laboratory must still
undergo observation for
moisture, sterility, breakage and
appearance.
reagent should be tested daily with both positive and negative controls.
daily
Antimicrobial Susceptibility uses specific strains of microorganisms from ____.
American Type Culture Collection (ATCC)
Antimicrobial solutions must ______ after thawing.
not be frozen
A stock culture should be grown in large volume of broth and then divided into _____ to last for a year.
vials
To maintain viability: it should be ____ after thawing.
Sub- Cultured twice
- Stock Cultured Organisms stored in freezer should be kept at ____
-70 degrees C
All tests performed on patients must be subjected to proficiency testing
Twice a year