Asepsis Chapter Flashcards
(48 cards)
invasion of a susceptible host by microorganism (pathogens) resulting in disease
infection
when a MO invades the host but does not cause infection
colonization
the presence of pathogenic organisms or their toxins in the blood or body tissues
sepsis
an infectious disease transmitted directly from one person to another is considered a
contagious or communicable disease
if pathogens cause clinical signs and symptoms the infection is ______. if not it is ________
symptomatic; asymptomatic
the ability to produce disease
virulence
a microorganism that causes disease
pathogen
an effort to keep patients as fee from exposure to infection causing pathogens as possible
aseptic technique
includes procedures used to reduce the # and prevent the spread of microorganisms
medical asepsis or clean technique
includes procedures to eliminate ALL microorganisms from an area
surgical asepsis or sterile technique
Chain of infection:
infectious agent reservoir portal of exit modes of transmission portal of entry susceptible host
etiologic agent
microorganism (MO)
reservoir
place where the MO usually resides
portal of exit
from the reservoir (cough, etc.)
mode of transmission
after MO leaves its reservoir it requires a means of transport to reach another person or host through
portal of entry
entrance into the body, often MOs enter the same way they exit
susceptible host
any person who is at risk for infection
4 types of MO that cause infection
viruses, bacteria, parasites, fungi
most common MO that causes infection
bacteria
infection that results from delivery of services in healthcare facility
nosocomial or health care acquired infections
HAI risk factors
invasive procedures, prolonged hospital stay, lowered resistance to infection due to underlying med condition, treatments with mult antibiotics for long periods of time
types of HAI
exogenous, endogenous
from MO outside the individual
exogenous HAI
when the patient’s flora becomes altered and an overgrowth results
endogenous HAI
