Card Set Information
infection control: Transmissible diseases
what are the objectives for preventing transmissible disease?
protect patients and dental personnel
maintain healthy facilities
prevent cross contamination
infection control in which all human blood and certain human body fluids are treated as if known to be infectious for HIV HBV and other blood borne pathogens.
infection control to protect dental health care personnel and patients from pathogens spread thru blood or other body fluids (except sweat)
what does the standard precautions apply to?
what are transmissions that are covered with standard precautions
what are the microoranisms of a new born baby?
none, new born oral cavity is sterile
how are microorganisms transmitted to the infant?
as infant grows always being introduced to adult microorangims
where does the salivary bacteria come from
mostly dorsum of the tongue
where do you find high counts of microorganisms?
what are the three types of infection potentials?
intact mucous membrane-protects against infection
microorganisms present in oral cavity-pathogenic, nonpathogenic and transient
what are the essential features fro disease transmission
port of exit
mode of transmission
port of entry
what is an infectious agent
what is a reservoir
water (from tubing)
what is a port of exit
skin and mucous membrane
what is are the three types of transmission?
what is a port of entry
what are some examples of a susceptible host
does the presence of an infectious agent always lead to an infection or disease?
what are the 7 factors influencing development of infection?
presence of infectious agent
numbers of organism
duration of exposure
virulence of organism
immune status of host
general physical health of host
nutritional status of the host
what are the factors that alter normal defenses?
abnormal physical conditions
prostheses and transplants
what are examples of abnormal physical conditions that alter the normal defenses?
what are some examples of systemic diseases that alter the normal defenses?
diabetes mellitus, alcoholism, leukemia, glomerulonephritis, AIDS
what are some examples of drug therapy that alter the normal defenses?
steroids, chemotherapeutic agents
what are some examples of prostheses or transplants that alter the normal defenses
joint replacement, cardiac proshtesis
what are dust borne organisms, how are they set into motion, and how are they controlled?
large airborne particles
opening and closing of doors
what is the size of aerosol and what forms do they take?
less than 50 um and usually less than 5 um
solid or liquid (usually invisible)
where do the aerosol particles get trapped when breathed in?
larger particles in upper respiratory tree
small particles of 5 um or less, deep into lungs
what type of airborne infection can be suspended in air for long periods of time?
what is spatter?
airborne infection that can be seen
it is larger and heavier then aerosols, it is greater than 50 um
it sprays on objects floor and people
what type of airborne infection cannot stay suspended in the air for long periods of time because of its size?
what are the origins of aerosols?
breathing, speaking, coughing, sneezing
handpieces, ultrasonic, air/water spray
when is the production of aerosols increased by tremendous proportions?
when using air/water spray (handpieces or ultrasonics)
what are the contents of aerosols?
microorganisms-single or clumped
particles from cavity preparation
where is the concentration of aerosols the greatest and how do aerosols travel?
greats closes to instrumentation and they get lesser as the distance is increased
travel with air currents, can go from room to room
what are 5 ways to prevent transmission of aerosols?
preprocedural oral hygiene measures
interruption of transmission
what are the preprocedural measures to prevent transmission of aerosols?
brush floss and mouthrinse
what are the methods of interruption of transmission of aerosols?
what are the prevention of transmission of aerosols for clean water?
EPA standards for drinking water
run water thru the lines
start of day 2 min
between pt 30 seconds
how do you prevent transmission of aerosols for the clinician and the patient
clinician-PPE masks, eyewear