LDU Flashcards
What are the two methods of manual cleaning and give an example of instruments cleaned in this way
Immersion -mirror
Non-immersion - handliece
What PPE is required for manual washing?
Rubber gloves - protection from sharps injury
Apron - contamination of clothes
Eye protection - splashing of chemicals
How often should an ultrasonic be de gassed?
Every morning and between cycles (every water change)
What is the purpose of de gassing?
Removes air bubbles within the chamber which reduces the efficacy of cleaning
Why should hand pieces not be put in steriliser?
Can cause pitting on the surface (due to aluminium)
Why is it important to use purified water in the steriliser?
To prevent limescale adhering to intstruments
What are the 3 types of steriliser and their uses?
Type N (basic autoclave)
Type B (vacuum capable)
Type S (specialised)
What temp and duration should a steriliser achieve?
134 - 137 degrees for 3 minutes
What test should be carried out on steriliser daily?
Steam penetration test (Bowie dick test)
How should sterilised equipment be stored?
Clean environment, free from aerosol contamination
Dry, temperature controlled
Away from direct sunlight
What is the difference between sterile instruments and instruments which have been sterilised?
Sterile - sterilised in packet and still sterile at point of use
Sterilised - has been sterilised but not stored in sterile conditions
What is sinners circle?
Energy
Time
Chemical
Temperature
(4 key elements required for cleaning)
What are the stages within WD?
Flush/ pre wash
Main wash
Rinse
Thermal disinfection
Drying
What time and temp should thermal disinfection achieve?
90 - 95 degrees for 1 min
Above which temperature will proteins coagulate ?
Above 30- 35 degrees
At which stage of decontamination are proteins removed from instruments?
Washer disinfector
What is Spaulding classification?
Critical - penetrates soft tissue, contacts bone/ blood stream/ normally sterile tissue. Eg forceps. Cleaned then sterilised
Semi critical - in contact with mucous membranes (not penetrating soft tissue) eg mirror. High level sterilisation
Non critical - in contact with skin/ intact mucous membranes. Eg chair. Low level disinfection
What are the 5 moments of hand hygiene?
Before touching patient and aseptic procedures
After touching patient, patient environment and bodily fluid exposure
What is the chain of infection
Susceptible host
Infectious agent
Reservoir
Portal of exit
Transmission
Portal of entry
What are the 10 sipceps?
Patient placement and assessment of infection risk
Occupation safety
Safe disposal of waste
Safe management of care environment
Safe management of care equipment
Safe management of linen
Safe management of blood and bodily fluids
Hand hygiene
PPE
Respiratory and cough hygiene
How is a blood spillage managed?
PPE and contain spillage with paper towel
Sprinkle area with chlorine releasing granules - sodium hypochlorite 10,000ppm
Wait 5 mins
Clear with paper towels and dispose in clinical waste
Dispose of sharps
Hand hygiene
