Final Exam / ATI Flashcards
(102 cards)
infectious agent alone isn’t sufficient to cause disease; agent must be transmitted within a conducive environment to a susceptible host
multi causation
number of people in population that have the disease in a given point of time
prevalence
number of new cases at a given point in time
incidence
how is TB spread
airborne, inhalation / droplet
how is TB tested
& when is it read
mantoux test (PPD) which is purified protein derivative under the skin (6mm wheel of fluid) w/ subq needle
must be read within 48-72 hours
how do you know if TB test is positive
(non-immunocompromised vs immunocompromised)
greater than 10mm induration in non-immunocompromised pts
greater than 5mm induration in immunocompromised pts
what is an induration
elevation, solid/firm texture of the skin that you can see from looking from the side. palpate it for elevation! this is not redness
what to do it mantoux test is positive
obtain chest x ray for nodules in the lobes to confirm TB
what color triage tag means walking wounded, minor injuries
green tag
what color triage tag means systemic but not yet life threatening… can wait 45-60 min
yellow tag
what color triage tag means life threatening, immediate priority
red tag
what color triage tag means deceased or injuries so extensive that chance of living is low
black tag
what tag means contamination exposure
hazmat tag, unknown exposure
can a triage pt have two tags?
yes, but one has to be a hazmat tag
RNs responsibility in regards to communicable disease
be prepared to intervene
this is when the virus is replicating, but not yet shedding so client does not have s/s yet
latent period
this is when shedding of the viral agent occurs, the pt is infectious at this period. may or may not have s/s at this point. person can transmit the disease to others at this stage.
communicable period
consistent, expected level in a geographic area
(ex: STIs, TB)
endemic
unexpected occurrence in a limited geographic area during a limited period
(ex: Measles)
outbreak
unexpected increase in occurrence in a geographic area over an extended period of time
epidemic
steady occurrence that covers a large geographic area or is evident worldwide
pandemic
ability to invade and infect
infectivity
agent’s ability to produce serious disease in its host
virulence
common cold - not serious, but easily passed
or
ebola - serious, ending in death (very virulent!)
**most viruses aren’t extremely virulent bc virus will die within the host
this is the environment in which a pathogen lives and multiples
reservoir