Environment Of Care Flashcards
Hepa filters remove what percent of particles
99.97
Use for protective environment or if ssi rate is high
Negative pressure rooms need how many air exchanges?
12 per hour. 15 in or
What temp should hot water be maintained at?
105 to 120 f
What temp should cold water be below to prevent legionella growth?
68 f or lower
The crp (construction and renovation policy) ensures:
Timely notification to the ip for early program planning efforts.
———— provides a formal mechanism for evaluating and addressing potential infectious diseases risks created by construction.
Infection control risk assessment icra
Done in the pre-construction phase
What is the best cleaning process?
Least to most contaminated
High surface down to low
Minimal dust disruption
Or rooms should be under ———— pressure
Positive. 2.5 pascals is the minimum. Also 15 air exchanges per hour with 3 fresh
What mycobacterium has been associated with waterborne outbreaks
Mycobacterium fortuitum
HVAC main air intakes should be located…
At least 6 feet off the ground and 25 feet away from air exhaust outlets
Which laundering process is most effective in removing microbes from soles linen
Washing in hot water 160f for a minimum of 25 minutes
What animals are excluded from animal therapy program
Primates, reptiles, rodents, amphibians, hedgehogs. They pose higher risk of injury or infection
Microbiological sampling is only indicated for
Water used in dialysis and hemodialysis fluid.
Also potentially during outbreaks
What method of air sampling is most useful to detect low numbers of spores in a highly filtered area
Sieve impactor samplers.
They sample a large volume of air in a short time
Examples of obligate intracellular parasitic bacteria
Cannot reproduce outside of host cell.
Chlamydia, typhus, Q fever, some mycobacterium.
Gram stains what part is the cell wall component?
Peptidoglycans
Amoebic trophozoites (dysentery) testing
Needs fresh stool
What specimen can remain at room temp if transport to lab is delayed?
CSF- should be transported immediately but if cannot can be at room temp and transported within an hour
True or false: For all disinfectants the greater the number of microbes on an object or surface the greater the amount of time that’s needed for a disinfectant to have affective Cidal activity?
True
What is an advantage of orthophthalaldehyde (opa) over glutraldehyde?
OPA does not require activation. Also it is stable over a range of pH values and does not irritate the eyes or nose nor have a strong odor.
How should environmental services clean a Naturally acquired inhalational anthrax patient’s room?
Since there is no person-to-person transmission of anthrax and no environmental Contamination of the patient’s room they should use the standard terminal cleaning process.
Which of the following air filtration methods has the highest efficiency compared to the others
Diffusion
Straining
Impingement
Interception
Diffusion
What is the only agency that has regulatory authority over healthcare facility design, construction and renovation?
OSHA
What element of the ICRA is conducted to reduce construction hazard risk
Mitigation.
It addresses patient placement, barrier standards, temp provisions for hvac and water disruption, demolition
The ventilation of a decontamination area of sterile processing should be
Negative with at least 10 air exchanges per hour and all air exhausted to outside
Bed bugs can live how long without feeding?
One year
How long can c diff spores survive in the environment?
5 months
What are potential sources of legionella
Cooling towers, ice machines, water faucets, fountains.
Not air conditioning dumbass
