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NR 224 Fundamentals Exam 1 | study guide, practice test, exam prep, and questions and answers - exam prep tips and key concepts$11.49
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NR 224 Fundamentals Exam 1
Study online at https://quizlet.com/_521g0k
is the invasion of a susceptible host by
pathogens or microorganisms, resulting
Infection
in disease. Entry and multiplication of or-
ganisms result in disease
occurs when a microorganism invades
Colonization
the host but does not cause infection
is the infectious disease transmitted from
Communicable Disease
one person to another.
If pathogens multiply and cause clinical
the infection is symptomatic
signs and symptoms....
If clinical signs and symptoms are not
the illness is asymptomatic
present..
***Most important technique to use in
preventing and controlling transmission HAND HYGIENE!
of infection is....
1)Infectious agent or pathogen
2)Reservoir or source for pathogen
growth
***Chain of Infection 3)Portal of exit
4)Mode of transmission
5)Portal of entry
6)Susceptible host
Direct contact Person to person OR Person to source
Indirect contact Person to inanimate object
Coughing, Sneezing, Talking (Lg particle
Droplet contact
only 3 ft)
Droplet nuclei or residue suspended in
Airborne
air or carried on dust particles
Food, water, drugs and solutions, blood,
Vehicles
fomites
-External transfer
Vector -Internal Transmission (parasitic) Mos-
quito, louse, flea, tick
1/9
, NR 224 Fundamentals Exam 1
Study online at https://quizlet.com/_521g0k
means having an impaired immune sys-
Immunocompromised
tem.
Virulence is the ability to produce disease
require oxygen for survival and for multi-
Aerobic Bacteria
plication sufficient to cause disease.
thrive where little or no free oxygen is
Anaerobic
available.
prevention of growth and reproduction of
Bacteriostasis
bacteria.
Bactericidal destructive to bacteria
helps to resist infection by releasing an-
Normal flora tibacterial substances and inhibiting mul-
tiplication of pathogenic microorganisms
Age
Nutritional status
Factors influencing infection prevention Stress
and control... Disease process
Treatments or conditions that compro-
mise the immune response
Health Care Associated Infection (HAI's) Results from delivery of health services
(Nosocomial) in a health care facility
Multiple illnesses
Older adults
Poorly nourished
Patients at greater risk of HAI...
Lowered resistance to infection
Critical illness
invasive treatment devices
Surgical or traumatic wounds
Major sites for HAI's... Urinary and respiratory tracts
Bloodstream
Less people should be taking care of
More complex condition of the patient...
them
Controlling Pathogen
Hand hygiene
2/9
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