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06/26/2019 Allen Jacobs, DPM
Sterilization of Nail Nippers (Matthew B. Richins, DPM)
With reference to the issue of sterilization vs. disinfection of nail cutting instruments, there is a difference between the theoretical and practical. Do you disinfect your exam chairs between patients? How about counter-tops between patients? Your Doppler probes or blood pressure cuffs between patients? Do you wear sterile gloves while handling your autoclaved nail cutters? Do you discard all multi-dose vials 28 days after initial use? Do you terminally clean exam rooms in which you perform invasive procedures?
I was trusted by the Missouri Podiatric Medical Society to prepare and present sterilization and disinfection protocols to the state society members, as such training is required every 2 years in Missouri. In fulfilling that obligation, I conducted appropriate research on this matter.
Yes sterilization is the “gold standard “for killing all forms of life ( eg: bacteria, fungus, viral) but it is not required for daily practice.
Critical sterilization is necessary for instruments which enter sterile tissues, cavities, or the vascular system.
Semi critical disinfection provides a high level of disinfection for objects that come in contact with non-intact skin.
Non-critical disinfection in used for instruments that come in contact with intact skin, nails.
Cold sterilization (actually disinfection) is all that is required. The key is to utilize an appropriate effective disinfectant. Wash off any dirt or blood before disinfecting. Follow the manufacturers recommended disinfection time protocol.
There is no data to suggest that antibiotic resistant bacteria are less sensitive to properly selected and utilized chemical germicides, including MRSA. Properly employed, the concentrations of many disinfectants used in practice are much higher than he MICs of these organisms. The level of tolerance of these organisms is very low. Again, it is important to use the optimal concentration, clean instrumentation of organic matter that may impede exposure to the disinfectant, and follow the suggested disinfection time. The disinfection contact time recommended by the EPA for use against HBV, HIV, M. Tuberculosis is 10 minutes for most disinfectants. Multiple studies demonstrate significant microbial reduction with a contact time of 30-60 second for vegetative bacteria, yeasts, mycobacterium, and viruses.
Perhaps those claiming the necessity to utilize sterile nail cutting instruments for each patient might point to incidents of disease transmission by not doing so.
Adequate disinfection protocols are all that is necessary for daily practice. It is practical and appropriate.
Allen Jacobs, DPM, St. Louis, MO
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