orm_may-2024 - 7

Sterilization & Infection Prevention
To begin the audit, determine the disinfection intensity. Used with permission.
uses a different measurement mechanism
is ATP testing. While dosimeter
cards measure irradiance received, ATP
testing tests whether active organisms
remain on the surface. That said, most
users typically find dosimeter cards to
be more convenient due to ease of use
and the ability to use them in multiple
areas. Moreover, dosimeter cards may
be used with both autonomous and nonautonomous
UVC disinfection systems.
Before starting the disinfection cycle,
simply remove the adhesive tape on
the back of each card and stick it to
the designated location with the yellow
exposure surface facing outward. Make
sure to write the time and date of the
audit on each card, as well as the hightouch
location where the card will be
placed (eg, " left bed rails, " " right closet
handle, " etc).
Proceed with the solution's standard
operating steps. When the cycle is complete,
collect all the cards. The extent of
the color change indicates each card's
exposure to UV and, by extension, the
efficacy of disinfection in that area.
Make sure to take pictures of the
cards for record-keeping purposes, as
the exposure surface will fade back to
yellow after a few hours. Results can be
www.ormanager.com
Dosimeter card attached to the foot of a hospital bed, a high-touch surface. Used
with permission.
useful to share with stakeholders in the
future. Reusing dosimeter cards is not
recommended.
Record the audit details and the dosimeter
readings in a spreadsheet. If
the readings meet desired thresholds,
set the audit parameters as the operating
parameters for future disinfection in
that area. Otherwise, up the intensity
and try again with a new set of cards.
If the cards reveal insufficient UVC
dosage only in specific areas, try remapping
the space to navigate the autonomous
system closer to target surfaces.
The system might also need to
be programmed to operate with a higher
intensity only in the desired areas. Also,
ensure all cards are positioned within a
direct line of sight to the solution during
disinfection. As the yellow area receives
more UVC exposure, its color changes
Continued on page 18
OR Manager | May 2024
7
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orm_may-2024

Table of Contents for the Digital Edition of orm_may-2024

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