Core Microbiology - Infection Prevention Control (8) Flashcards Preview

Clinical Pathology > Core Microbiology - Infection Prevention Control (8) > Flashcards

Flashcards in Core Microbiology - Infection Prevention Control (8) Deck (12):
1

Chain of infection

Pathogenic organism
Reservoir
Exit
Transmission
Entry
Susceptible host

2

Eliminate pathogenic organism

- Environmental cleaning and decontamination (H202 room decontamination, spillage management, laundry)
- Equipment decontamination (sterilisation, disinfection)
- Antisepsis (surgical skin prep, MRSA decolonisation)
- Antibiotic prophylaxis (preoperative, post-exposure)

3

Remove reservoir/source

- Hand hygiene
- Environmental cleaning and decontamination

4

Minimise transmission

- Hand hygiene
- Personal protective equipment (gloves)
- Equipment decontamination
- Source and protective isolation
- Use of disposable equipment (syringes)

5

Eliminate entry (and exit)

- Antisepsis (surgical skin prep)
- Asepsis
- Air handling (filtration and laminar flow, positive pressure ventilated lobby -PPVL)
- Sharps management
- Patient management

6

Reduce susceptibility to infection

- Start smart - then focus
- Immunisation

7

Sterilisation

Complete killing/removal of all types of microoganisms

8

Sterilisation methods

- Heat (moist, dry)
- Chemical (gas, liquid)
- Filtration
- Ionising radiation (single use disposable equipment)

9

Sterilisation by moist heat

Autoclave - steam under high pressure

10

Sterilisation dry heat

Oven - controlled temperature cycles 160 degrees for 2 hours/1700 degrees for 1 hour

11

Disinfection

Removal/destruction of sufficient numbers of potentially harmful micro-organisms to make an item safe to use

12

Antisepsis

Disinfection applied to damaged skin/living tissues (requires a disinfectant with minimal toxicity)

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