Part 1 Flashcards
The CDC reports that ____ people get HAI a year & out of those _____ will result in death
2 Million; 100,000
Approx ____ out of every ____ pts receiving healthcare in the US will acquire a HAI?
1/20
Research studies have demonstrated that the bacteria that cause hospital acquired infections are most frequently spread from one pt to another via ____
The hands of the health care worker
Despite the evidence linking infection to hand washing, 34 studies involved hand washing amount healthcare workers revealed that workers only wash their hands what percent of the time?
40%
Which form of hand hygiene is the best?
SOAP AND WATER
What is the preferred substitute for soap and water when hands are not visibly dirty?
Alcohol based hand rubs
If you have a PT with C.Diff what hand washing procedure should you use?
Soap and water
How can you prevent infection?
By breaking ANY link on the chain of infection
What is the chain of infection?
Infectious agent- reservoir- portal of exit- transmission- portal of entry- susceptible host
What is the most effective way to break the chain of infection?
Hand Hygiene
What are infectious agents
Bacteria, viruses, fungi, Protozoa with a high level of virulence
What are some frequent reservoirs of HAI’s?
Healthcare workers, pts, equipment, environment
What microbe causes gas gangrene?
Clostridium Perfringens
What are some common portals of exit?
Blood, skin, mucous membranes, respiratory tracts, GU, GI tract, transplacental
What are the modes of transmission & an example to go with.
Direct- person to person
Indirect- person to fomite
Droplet- coughing, sneezing, talking
Airborne- air/ dust
Vehicles- water, drugs, blood, food
Vector- parasites like ticks
What are the portals of entry?
Mucous membranes, skin, parenteral route
What are some factors that effect susceptibility?
Age, nutrition, stress, disease process, obesity, smoking
Besides hand washing what are some other ways to break the chain of infection?
Disposable equipment, gloves, careful handing of elimination
What is a hospital inquired infection? What are the most common ones?
- ANY INFECTION NOT PRESENT OR INCUBATING AT THE TIME OF ADMISSION
- surgical site, bloodstream, urinary tract infections, pneumonias
When are standard precautions applied?
ALL CARE OF PTS REGARDLESS OF DIAGNOSIS
What are the 7 characteristics of standard precautions?
Hand washing- gloves- mask/ eye wear- gowns- equipment- linen- pt placement
In what order do you don on PPE?
Gown, mask, goggles, gloves
What are transmission based precautions?
Airborne, droplet, contact, protective equipment
What are airborne precautions used for?
Diseases that are spread short distances by large droplets
What are respiratory droplets?
Infected person coughs, sneezes, talks during PT care
What are susceptible portals of entry for respiratory viruses?
Nasal mucosa & mouth
What are some diseases that require airborne precautions?
Measles, smallpox, varicella, TB, varicella zoster
What barrier protections must be used with airborne precautions?
Private rooms with NEGATIVE pressure airflow, N95 masks
What do droplet precautions require?
Surgical mask, hand hygiene, dedicated care equipment
What are some diseases you would put on droplet precautions?
Flu & pneumonia
What is the most common mode of transmission?
Contact
What two subgroups are within contact precautions?
Direct and indirect
What PPE is used for contact precautions?
Gown & gloves
What is protective equipment? what is the goal?
Reserve isolation- protect pt from exposure to microbes
What gifts can transmission precautions receive?
Positive airflow & fresh fruit
What kind of pt may be placed on protective environment precautions?
Immunocompromised
What is Staphylococcus aureus?
Strain off bacteria that forms part of the human normal flora and can be found on the skin & in the nares
What percent of the Population is colonized in the nares with staph?
25-30%
What are some minor staph skin infections and how are they treated?
Pimples/boils
ANTIBIOTICS
What are some major infections caused by staph?
Surgical wound, bloodstream infections and pneumonia