It’s fair to say that the scariest organism as a person can come up against face-to-face is probably a shark or a bear, but sometimes you’ll find that the creatures you can’t see are often the most dangerous. In the following quiz on the study of microbiology, we’ll be taking a look at those such microorganisms and seeing if you know the facts about decontamination as well as you should.
90,000
250,000
5,000
25,000
15%
25%
1%
10%
Medical equipment
Humans
Carpet
Food and water
By reducing neutrophil effectiveness
Providing surfaces for biofilms to develop
impeding local host defenses
Both A and B
History of smoking
Prolonged intubation
Obesity
All the above
Airborne transmission
Surgical transmission
Indirect contact
Droplet transmission
Drinking tap water
Inhaling tuberculosis pathogens in the emergency department
Use of a sterile needle on a pneumonia patient
Use of a dirty nebulizer on another patient
12 feet
15 feet
10 feet
6 feet
Smallpox
All the above
Tuberculosis
Measles
Surveillance
Immunization
Chemoprophylaxis
Both A and B
Hepatitis B
Streptococcus pneumoniae
Tuberculosis
Smallpox
B. anthracis
N. meningitides
B. pertussis
All the above
Disinfecting the equipment
Sterilizing the equipment
Drying the equipment
Cleaning the equipment
Soaps have good bactericidal activity.
Soaps can help remove organic material.
Soaps act by lowering the surface tension.
Soaps work poorly in hard water.
Strong detergent
Bleach
70% ethyl alcohol
Warm soapy water
Gram-positive rods
Viruses
Bacterial spores
Gram-negative cocci
1% sodium benzoate
5% iodine solution
70% ethyl alcohol
5.25% sodium hypochlorite
They can damage rubber tubing.
They are considered sporicidal.
Their activity drops when diluted below 50% concentration
Alcohols are good for surface cleaning of stethoscope bells and diaphragms.
They are ineffective on surfaces shortly after application.
They cause tissue irritation.
They are fungicidal.
They are bactericidal.
Less irritating to tissue
Water soluble
Nonstaining
All the above
It is not used for disinfection on surfaces due to cost.
It can cause significant tissue inflammation in workers who use it.
It is a true sterilizing agent when used properly.
It can retain activity up to 90 days once activated
1:10
1:20
1:1
1:5
Steam sterilization
Use of hydrochlorofluorcarbon
Flash sterilization
ETO
Acute exposure is of little consequence.
It is useful for equipment that cannot be autoclaved.
Will penetrate prewrapping.
It is harmless to rubber and plastics.
Internal circuits of a ventilator
Oxygen therapy devices
Large-volume nebulizers
Small-volume nebulizers