STERILISE LOADS

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TAFE NSW - Sydney Institute *

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HLTSTE003

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Biology

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Feb 20, 2024

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docx

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HLTSTE003- Assessment What you have to do As a worker in the sterilising department you will need to develop the skills and knowledge to select, load and operate equipment suitable for the items to be sterilised, to monitor the equipment and interpret machine data for conformance with acceptable parameters, and to unload and release sterilised items for distribution. You may need to refer back to your learning resource Answer all knowledge questions below. Type your answers in the fields provided. Save your answers in this document then submit via the OLS. You may need to refer back to your learning resource. 1. What does sterilisation mean? It is a process that is used to kill or remove all types of micro-organisms with a low chance of it surviving on any article. 2. Name the three different types of steam Saturated steam Wet saturated steam Superheated steam 3. Which is the correct steam needed for sterilisation? Saturated steam is considered satisfactory for use in sterilisation as it has a dryness fracture of 97% or more 4. What are some WHS things you need to consider when loading a steriliser? Once you have placed your trolley in the right place lock it in place so it doesn’t move,load the steriliser evenly within the chamber not touching the sides or doors to prevent burns Heavy items on the lower shelf and pouches on the top with the plastic facing upright. Use Correct lifting techiniques to prevent muscular injuries do not overload the steriliser halloware to be placed in the draining position 5. What are some of the things you need to consider when unloading a steriliser? Unload immediately Wear correct PPE ( Heat resistant gloves and saftey goggles) steam can burn Correct lifting techniques when moving or lifting loads lock the trolley into place so it doesn’t move Review the printout to verify all parameters have been met check indicator tape has changed colour LA021073 Assignment , HLTSTE003 Ed 1 1 © New South Wales Technical and Further Education Commission, 2016 (TAFE NSW – WSI), Archive version 1, March 2016

Check the load is in tact and undamaged or wet, if an item comes out wet follow workplace policies for documenting and reporting. 6. How are micro-organisms destroyed by steam sterilisation? The moisture and latent heat destroy the micro-organisms by means of coagulating the cell protein 7. How are micro-organisms destroyed by dry heat sterilisation? micro-organisms are destroyed by dry heat oxidisation, the continual loss of moisture 8. How are micro-organisms destroyed by Hydrogen peroxide plasma sterilisation? Hydrogen peroxide kills micro-organisms by disrupting the life function with a bio chemical interaction with enzymes, cell membranes or nuceic acids 9. How are micro-organisms destroyed by Low Temperatures peracetic acid sterilisation? peracetic acid is an effective brocide. being an oxidising agent it denatures protein, disrupts cell wall permeability, thus inactivating mirco-organisms 10. What items are suitable for the Low temperature plasma sterilization Items that are suitable for low temperature plasma sterilization are endoscopes( both rigid and flexible), hollow loads- surgical power drills, laryngoscopes and blades Non halloware loads- dopplers, defibrilator paddles and electrocautory instruments. 2 LA021073 Assignment , HLTSTE003 Ed 1 © New South Wales Technical and Further Education Commission, 2016 (TAFE NSW – WSI), Archive version 1, March 2016

11. Define the following term- Penetration time penetration time is the time it takes for the items to reach the required temperature after the temperature has been reached in the chamber 12. Define the following term -Holding time The holding time is the actual time that is needed to destroy the micro-organisms at a specific temperature of 134°c and the right pressure. once the chamber has reached the specific temperature 13. What is the correct procedure to follow if an item comes out wet or has been compromise from a steam steriliser? If a load has been compromised it must be rejected and reprocessed. It is considered unsterile and needs to be unwrapped and reprocessed. Document all rejected items and why they were rejected 14. Why is it important to have correct information on the tray label such as: Name of tray, cycle number and sterilisation number? The correct information on a tray label enables anybody quick access to the name of the tray, the trays contents, cycle or sterilization number. It is also important for quality control assurance, inventory control and stock rotation purposes. 15. Explain what procedures you would take if parameters have not been achieved when validating a completed load for steam sterilisation At the end of a load if the parameters have not been met the technician would need to document why it wasn’t achieved, this would then be reported to the manager who would need to organise the machine to be serviced and fixed. 16. Name 3 important qualities that steam posses. Latent heat Moisture Penetration 17. List three tests carried out on a Pre-vac steriliser. Tests carried out on a pre-vac steriliser are a: - daily leak check (air detectors) - a warm up cycle - Bowie and dick test ( to check air removal and steam penetration) 18. What is Latent heat and sensible termed as in steam sterilization? Combined latent heat and sensible heat in sterilization is enthalpy or total heat. LA021073 Assignment , HLTSTE003 Ed 1 3 © New South Wales Technical and Further Education Commission, 2016 (TAFE NSW – WSI), Archive version 1, March 2016

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Latent heat is energy in a hidden form which is extracted to change the state of a substance without changing its temperature 19. Explain how you would, upon completion of a steam sterilising cycle check that parameters have been met, unload the steriliser and document load. perform correct hand hygiene procedures, no cream as it can contaminate. Allow finished load to stand for 10 minutes, this reduces risk of harm to the operator allow trapped air to escape avoiding burns. Check the printout to verify pressure, temperature and duration exposure has been met (mechanical monitoring), check indicator strips or tapes ( chemical monitoring) which determines that the items have been processed or unprocessed, eliminating stock that is unsterile. Check all packaged items for tears or damage, check labelling is in tact If they do not meet the standards they are to be rejected reprocessed and documented. Document in the log book the cycle prinout, results of indicators, operators name and the contents of each load. This enables accountability Allow sterile loads to cool to room temperature to stop condensation before storage. 20. How do we document the test result All records should be dated and stored so that they can be reviewed at any time. The test record should have the cycle number and date, steriliser code, exposure, temperature, time and pressure, loading operator ID, specific list of the load and the read out result of chemical, physical and biological indicators. 21. Give four examples of when performance qualification needs to be re-established. Four examples when performance qualification needs to be re-established: - Wrapping materials change - largest pack changes - Load configurations change - Following major repairs Performance documentation proves that the steriliser and the load is reproducible. 4 LA021073 Assignment , HLTSTE003 Ed 1 © New South Wales Technical and Further Education Commission, 2016 (TAFE NSW – WSI), Archive version 1, March 2016

22. If you were to load the following items on the same load. Where would you place them? a. Heavy instrument tray b. Bowl c. Linen d. Single items in steripeel Draw where you would put each item & write what it is on the shelf drawn below. Single items in steripeel linen heavy intrument tray bowl 23. What loading techniques do you need to consider when loading items for Peracetic acid steriliser? That the correct processing tray is used. Directed flow tray is used for rigid items. Flexible scopes have a specific traywith tubing adapters so all internal channels are sterilised. Always follow manufactures recommendations and all surfaces must come into contact with the sterilant. 24. 24. Downward displacement is another type of steam steriliser how does the downward displacement steriliser remove air form the chamber? Once the door is closed, steam enters the chamber at a certain rate. Steam is lighter then air which rises into the chamber forcing air downwards. This is gravity displacement. At the bottom of the chamber there is a drain line, at 25mm it drains out past a steam trap or thermostatic valve. once the temperature is reached and steam is passing the valve, it closes keeping the steam in. this is then held for a set time. the next step is an exhaust or drying phase 25. Name three advantages of steam sterilisation 3 advantages of steam sterilisation are: - steam is easy to control and can be set at different temperatures and pressures LA021073 Assignment , HLTSTE003 Ed 1 5 © New South Wales Technical and Further Education Commission, 2016 (TAFE NSW – WSI), Archive version 1, March 2016

- Steam leaves no residue, is environmentally friendly and is non-toxic - Steam is one of the most efficient ways to kill micro-organisms and is a quick and effective process. Checklist I have: o answered all questions in the space provided o saved my answers in this document. If you are unable to complete this task for a specific reason, please contact your teacher to discuss alternative arrangements for demonstrating your skills and knowledge. 6 LA021073 Assignment , HLTSTE003 Ed 1 © New South Wales Technical and Further Education Commission, 2016 (TAFE NSW – WSI), Archive version 1, March 2016

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STERILISE LOADS

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