Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/22

Click to flip

22 Cards in this Set

  • Front
  • Back
Ideal disinfectant (7)
kills all pathogens
fast acting
nontoxic
residual action
noncorrosive
not easily inactivated
low cost
antiseptic vs disinfectant
antiseptic - living tissue
disinfectant - inanimate objects
advantages of alcohol
bactericidal
noncorrosive
disadvantages of alcohol
evaporates quickly
easily contaminated
harsh on injured tissue
coagulates cell proteins
does not get spores, fungi
ideal use for alcohol
last layer in sx scrub
Aldehydes
eg. Formalin

used little now
vary caustic
cold sterilization
Oxidizing agents mode of action
react w/ protein molecules of cells causing O2 exchange which deactivates enzymes
Oxidizing agents - examples
iodine base
povidone iodine compounds
BisGuandine compounds
Chlorine
H2O2 (hydrogen peroxide)
Iodine base agents
sx prep of skin
somewhat irritating
stains
little risidual effect

bactera, viruses, fungus, some spores
Povidone Iodine Components
slower release of iodine
easily inactivated
no residual effect
stains

bacteria, fungi, viruses, protozoa
BisGuanide Compounds
(Chlorhexidine - Nolvosan)
alter cell wall permeability
good residual activity

bacteria, viruses, fungi (ringworm)

Epidene -reddish
Chlorine (bleach)
widespread use
cheap

easily inactivated
caustic, irritating
stains
no residual effect
clean area before use

viruses, fungi, bacteria, algae (no spores)
Hydrogen Peroxide (H2O2)
degrades into O2 and H2O

breaks down membranes
not effective against nonenveloped viruses
Surfactants/Detergents
Quaternary ammonium compounds

reduce surface tension
easier to detach material
emulsify lipids

long contact time
expensive
Phenolic Derivatives
Bis-Phenol: hexachlorophene

very corrosive, irritating

rarely used
Ethylene Oxide
poisonous

used for autoclaving one-time objects

longer sterilization time, but lower temp

does not ruin delicate objects
Steps in cleaning cage
remove organic matter

soak with detergent & rinse

bleach + H2O 1:32, leave on 10-15 min & rinse

roof, door, sides, floor
Anionic detergent
has free negatively charged ions that precipitate when combined with calcium and magnesium in hard water
Cationic detergent
contains positively charged ions that remain suspended in solution
Biocide
kills living organisms
Sanitize
reduce number of microbes to safe level
Detergent
chemical that contains free ions and leaves film on surfaces