sterilization and disinfection Flashcards
disinfection
chemical/physical means that kills pathogenic microorganisms but not spores
Spaulding Classification System
- categorized items to be disinfected
- critical, semicritical, noncritical
process controls/indicators/process challenge devices (PCD)
- make sure that physical conditions meet standards in the sterilizers
- CI, BI…
BI
-efficacy of specific sterilization cycle, not sterility of item
Class 1 CI
- external
- processed vs unprocessed distinction: has it been exposed to sterilization?
Class 2 CI
- Bowie Dick/Daily Function Test
- in dynamic air removal only during pre-vaccuum stage
- detect air leaks, presence of noncondensable gas
- in empty sterilizer over drain not pan
class 3 CI
single parameter
class 4 CI
> 2 parameters
class 5 CI
- integrating indicator that includes ALL critical parameters
- sterilant specific
class 6 CI/emulating indicator
-all critical parameters in a specific cycle
which sterilization methods use geobacillus stearothermophilus as BI?
-steam, plasma, vapor, ozone
which sterilization methods use bacillus atropheus
ETO, dry heat
which sterilization methods does not need BI?
peracetic acid-use specific BIs
class I clean wound
- no inflammation, maybe just nonpenetrating blunt trauma
- no entry into resp. alimentary, GU tract/break in sterility
- primarily closed wound, thyroidectomy, masectomy, ganglion excision, herniorrhaphy, laminectomy
- closed drainage system (bulb drain)
class II clean contaminated wound
- controlled/no infected/contaminated entry into resp., alimentary, GU tract
- no major GI spillage/breaks in sterility
- D&C, TAH, cysto, TUR, cholec…, hysterectomy (ab or vag), Csection, tracheostomy, appendectomy
