Water Quality & Surgical Instruments
Jim Schneiter 's commentary on a recent article regarding sterilization issues at hospital: https://www.hpnonline.com/surgical-critical-care/news/55042891/roudebush-va-medical-center-halts-surgeries-due-to-sterilization-issues
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While often overlooked, water is important for all stages of reusable medical device processing. Water is required for decontamination, soaking, manual or automated cleaning, rinsing and the final disinfecting rinse. Regretfully, almost all municipal tap water is contaminated with varying levels of toxic heavy metals and other harmful contaminants. Most water treatment facilities in use today were not designed to remove organic chemicals and heavy metals.
Depending on water hardness and temperature, tap water used in device processing can lead to the formation of hard water deposits, a layer of lime or scale that is difficult to dissolve. Additionally, corrosion may occur under these deposits. When water evaporates, some substances can remain as visible mineral residues. Calcium, magnesium and water pH can stain instruments and inactivate disinfectants.
Contrary to its name, ‘stainless’ steel instruments can in fact become stained over time. “Water can also damage stainless steel instruments. Stainless instruments are susceptible to pitting when there is an increase in the chloride content in the water, when there is an increase in temperature, with decreasing pH values, increased exposure times, insufficient drying and concentration of chloride from dry residues to instrument surfaces after evaporation.” (1)
Municipal tap water impurities can be the cause of many adverse effects on medical device processing. Reusable surgical instruments can show signs of corrosion, scaling and pitting caused by water impurities. The buildup of biomass, increased microbial and/or endotoxin content on instruments are also the result of the impurities in tap water. When it comes to device processing, water impurities can significantly decrease the effectiveness of commercial detergents thus compromising the cleanliness of the instrument. In addition to being harmful to instruments, over time, water impurities will buildup in the water supply system and cause biofouling or mineral scaling within the facility’s piping. Finally, and most importantly, water impurities can lead to an instrument that remains contaminated after processing being returned to surgery and infecting a patient. (2)
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Monitoring water quality is a key part of ensuring safe and effective device processing. When it comes to water quality for use in medical device processing, two general characteristics need to be considered and monitored. First is the microbial level in the water. Second are the inorganic and the organic components of the water. Ensuring safe water quality in device processing requires collaboration between the personnel who process medical devices and the personnel who establish and maintain the water treatment system. (3)
Given that water is used in all phases of device processing, every healthcare facility has the obligation to ensure the quality of the water they use for processing. In order to fulfill this critical obligation, every healthcare facility needs to determine how pure their water is and conduct regular checks to ensure the quality of the water to prevent patient harm.
1. “Water for Instrument Processing” Marcia Frieze, Infection Control Today, April 29, 2009
2. “AAMI TIR34 – Water for the Reprocessing of Medical Devices” https://www.evoqua.com/en/articles/AAMI-TIR34-water-for-medical-devices/
3. Op. Cite.
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8 个月Part 6 In closing ,I believe an ounce of?prevention can yield enormous return for your patient. I also believe that we must understand that implementation of any quality improvement or risk-based?program?does not always prevent incidences from happening but?helps reduce and understand them better if they occur. We must not forget the importance of reading and understanding all the IFU in our process and see how they interact with each other to get us to “Best Practice”. Like to hear what you think. Again, we only have so much space to give a viewpoint. #ahrm #spd # mdrd #cnor #OR #aorn #apic #ast #cssd # HAHQ 3wfhss #HSPA #IAHCSMM #cbspd #ASHE #AAMI #CPD #WIPAK #steriking #LTA #getinge #IFUcan #healthmark #sgna
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8 个月Part 5 Experience has shown that most staining and spotting?problems (regardless, if on an instrument or tray liner) are more geographical in nature, due to such factors as water pH, boiler compounds in water lines, staff training loading technique ,detergent residue and certain chemical incompatible with?the stainless steel on instruments or even surgical trays. My view is any stain/color needs to be investigated and some experts have stated that out of all of the concerns one must look at the water and steam quality and ?generally it is found to be the main source of these stains/colors. With steam sterilization it is the reaction during the steam process that makes these “stains/colors” appear because they were not there before they were sterilized. Thus, suggestive water and steam quality. I believe if you have poor ?water or steam quality it will appear or react with your equipment or medical devise and cause poor outcomes, some place in your process. So why not do simple water tests every day ( think of your pool water) so you can trend and be ahead of the curve and know the exact water quality in your department. Just one simple solution.
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8 个月Part 4 These spots often happens because of a less-than-optimal blowing process after rinsing and staff not loading the instruments properly ( overshadowing taking place). This can eventually lead to water spots, especially if the blowing dry process is not complete. These spots sometimes appear after sterilization. Thus, in my view if the staff understood the importance of the instruments being dry coming out of the washer ,they would investigate?the reason they were not dry ( data logged could help show the drying temperature). Other information would have to be looked at like the quality of water ,staff technique in loading instrument in the washer. Not just one simple answer in solving the “white spot issue” . Where does a lot of that information come from concerning water quality the Manufacturers Instruction for Use. Remember I believe these standards are needed.
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8 个月Part 3 Here is why I feel comfortable making this statement. First, the drying step is vital in preventing water spots. What I have seen in similar situations, most medical devices are not dry when they come out of a medical automatic washer they might appear?“dry and visual?clean” but there are spots of water left to dry on their own. Thus, if ?even a?few drops of rinse water are left on the parts, then when water evaporates, it concentrates the possibility of trace salts and leaves calcium, magnesium and other deposits on the instruments. These often appear in characteristic sets of white ring shapes, i.e. water spots. I have observed staff while assembling instruments see spots on instruments and wipe with alcohol and move on. This is when critical thinking needs to take place, if you see spots ,wiping them away does not solve the issue. It needs investigating, or I think it does. These spots often happens because of a less-than-optimal blowing process after rinsing and staff not loading the instruments properly ( overshadowing taking place). This can eventually lead to water spots, especially if the blowing dry process is not complete. These spots sometimes appear after sterilization.
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8 个月Part 2 Interesting, this is not a new issue ,it has been going on since I have been in this industry ( yes, I am old ) and before me, spots on instruments, what are they ? In the last few months, I have seen so many webinars on water quality and the new standard trying to raise the awareness of the importance of water quality, I wonder if this will help or not. I am not sure because not everyone follows the standard and as my friend DJ states “don’t just meet the standard exceed them”. We all need a water quality team and a plan for managing the water in any facility and how the frontline staff understand their role and why and how important they are in making sure headlines like this do not take place. Do not get me wrong, we need the standard and people to use and follow the standard so why is this still a concern. For me it centers around using critical thinking skills and teaching our staff and trusting them to use this skill every day. Why make such a strong statement. Because these water spots did not just appear for the first time, nobody can make me believe they just appeared that day. They have been going on for some time. So, what was in place for the staff to alert management ahead of time of any spots.