Decontamination BDS5 Flashcards
What is the purpose of the decontamination cycle?
To remove any biological matter that may be present
To minimise risk of cross contamination and prevent infection
What are the recommendations for manual washing?
Temp. <35 degrees
Enzymatic detergent used
PPE required
Scrubbing takes place below surface of water
What are the recommendations for the ultrasonic bath?
Bath should be filled to required level
Enzymatic detergent used
Must run a de-gas cycle at the beginning of each day
This is a supplementary process, everything must be processed in a WD afterwards
What is the first step in the decontamination cycle? What are the recommendations for this process?
Washer Disinfector
Temp. 40-65 degrees
Thermal disinfection takes place for minimum of 1 minute at 90-95 degrees
Drying phase takes place to remove excess moisture
What is the second step in the decon cycle?
Inspection
To verify that parameters have been achieved
What is the third step in the decon cycle?
Sterilisation in vaccum steriliser (B-type steriliser)
Used to kill any viable micro-organisms present on instruments
Steriliser starts by removing air with a series of negative pulses
134-137 degrees for a minimum of 3 minutes at 2.25 bar
There is a drying phase at the end to remove any excess moisture
How often must equipment be tested?
All equipment must be tested on a daily, weekly and quarterly basis and validated annually
Challenge devices can be used to test the efficacy of the process
What is the final stage of the decon process?
Instrumentation is handled, transported and used safely
What are the stages of a washer disinfector?
Flush Wash Rinse Disinfection Drying
What colour change should you see in a bowie dick test strip if the machine is working correctly?
Yellow to purple
Purple = working correctly
What should be seen on the documented procedure for an instrument?
Type of load Loading procedure Choice of operating cycle Sterile product release procedure Trained staff Record details of item processed Drain water reservoir and chamber daily
What tests are carried out on a washer disinfector?
Daily test = carried out on 1st cycle with instruments, known as ACT
Weekly test = carried out to test the cleaning efficacy of the machine, carried out at same time as daily test
Quarterly and Annual tests = series of tests carried out on the machine and checked against original manufacturers specification
What tests are carried out on a steriliser?
Daily test = carried out on 1st cycle, chec time, temp and pressure and undertake a steam penetration test
Weekly test = safety test (check doors etc.)
ACT and steam penetration test
Air leakage test
Quarterly and Annual tests = series of tests carried out on the machine and checked against original manufacturers specification
