Sterilization and disinfection

Question 0

positive pressure vs. negative pressure

Answer 0

positive- air flows only from patient room to corridor (in to out)
negative- air flows from corridor in, not from patient room out ( highly infectious disease)

Question 1

antiseptic

Answer 1

used only on skin disinfectant

Question 2

autoclaving

Answer 2

moist heat of 121 Celsius, 15 psi, 15 will kill c. botulinum spores

Question 3

sterilization

Answer 3

most important consideration is whether object to be sterilized is free of organic matter ( blood, fecal material, tissue)

Question 4

Spore test

Answer 4

negative test ( Sterile)- successful! 
positive test ( not sterile)- pH of medium change due to growth of bacteria, acid growth

Question 5

4 elements that can sterilize

Answer 5

Halogen- chlorine, iodine ( used well)
Aldehydes- sterilize well (glutoaldehyde or cidex)
ethylene oxide- gas that sterilize
peroxygens- strong oxidizer

Question 6

good disinfections and chemical sterilizer

Answer 6

halogens: iodine and chlorine. prevents liquid from evaporating and decontamination of water
alcohol: kill bacteria and fungi, but not endospores and non enveloped viruses, not good for treating wounds since they cause coagulation of proteins