Follow-up Q&A from Webinar Hosted by Becker’s Hospital Review

Posted by Tru-D SmartUVC 10.24.17

Thank you to everyone who attended our webinar Evidence-based Practices for Implementing UV Disinfection hosted by Becker’s Hospital Review. We received a lot of great questions, and we weren’t able to answer all of them during the webinar. Alice Brewer, Tru-D’s Director of Clinical Affairs shares some insight below to address your questions:


Dr. Rutala has recently done research using visible light disinfection that can be permanently installed in an OR.  this is visible blue light, not UV.  How do you compare with UV and should you use both?

Blue light is on continuously and not as effective at killing organisms.  It needs to be on for an extended period of time as its effect is cumulative.

What is your recommended approach for terminal cleaning rooms in private and semi-private units?

Terminal cleaning should always be with an approved disinfectant followed by UV.

Tell us a little about application in the OR.

Tru-D has been proven to significantly reduce bioburden in ORs leading to a decrease in SSIs. More information can be found here.

Any impact to patients’ exposure of the UV?

UV should only be used in unoccupied rooms. Tru-D provides a number of safety measures to prevent anyone from entering a room once a cycle has started.

How does tru d compare to streri mist in terms of efficacy and cost?

SteraMist typically takes longer and requires rooms to be sealed and facilities to adjust HVAC systems for the rooms being disinfected. UV does not require a room to be sealed, just the door closed, and requires no changes to HVAC.

How much training is required for EV staff? Time required?

Classroom training requires 45 minutes for lecture and quiz. Hands-on training can take up to 45 minutes for the operator to feel confidence in selecting criteria and starting a cycle with the handheld technology (iPad and iPod).

Is there any potential concern of the device damaging plastics in the room?

Tru-D SmartUVC delivers almost all its energy in the UVC specific wavelength (253.7nm). This very short UVC germicidal wavelength can only penetrate hard plastic a maximum of 30-60µm (microns) or about 3 mils and will not/cannot cause degradation to a hard plastic. If a white plastic or painted object does not have UV inhibitors, and is in proximity (18” or less) to UVC, over hundreds of cycles, the intense dose may cause very slight cosmetic yellowing to white paint or plastic on the edge constantly exposed to UV-C.

Was there a specific department’s budget (IC, EVS, Quality, etc) that this acquisition was tied to knowing the impact could be over many areas?

Budget is handled differently depending on the hospital – sometimes paid for by EVS, sometimes out of Operations.

What is the average  exposure time for a UVC cleaning?

25-40 minutes

Does the target area need to be dry.Will UVC penetrate any fluids on the target area?

Surfaces need to be dry before using Tru-D. UVC can cause off-gassing of cleaning solutions that are not yet dry.

Does UV cleaning pose any risk to staff and others nearby during the cleaning process?

UVC does not pose any risk as long as you are not in the room with it.  It does not pass through glass or glass or other building materials so as long as all windows and doors are closed, no UVC can escape.

What is the average time that tru-d takes for a private room?

About 30 minutes.

Does Tru-D recommend cleaning with your device between every patient or simply adding the UV cleaning at end of day?

For most situations Tru-D should be used post discharge for Isolation discharge cleaning in targeted patient rooms and no more frequently than once daily in ORs.  In between case cleanings is not usually necessary.

What is average time of patient room Tru-D “treatment”?  What is electricity/energy consumption per patient room per treatment?

25-40 minutes.  Tru-D can be plugged into standard outlets

Why choose in room UV units versus UV in the air handler?

A unit in the air handler would not be able to achieve total room disinfection of all surfaces. UV in the air handler is most effective at cleaning the air, not surfaces.

What is the additional time required for Tru-D device in room cleaning?

It adds about 4-11 or an average of 7 minutes to room turnover.

Does Tru-D have integrated sensors that detect presence of its targeted pathogens? Can we retrieve any environmental data from the machine?

No.  Sensors only detect the amount of reflected UVC. Data that can be retrieved is only about the cycle performed, not what pathogens might have been present in the room.

After they purchased the machine, what types of improvements did they report?

We have not received recent data from Chesapeake.

Would like to know what variables U Wisconsin did to determine the $1.3m savings. What variables? Who did it? Why did they do it? Did Tru-D assist in documenting that?

They assessed the number of avoided HAIs (88) since using Tru-D. Applying a cost of ~$15,000 to each HAI they came up with $1.3 million. The CFO is the one who reported this to Tru-D; Tru-D did not have any part in determining the savings.

What about the other UV robots that have the dose measuring sensors? Multiple robots have that. Is it actually patented?

The Sensor360 technology is patented. No other UV devices measure UVC 360 degrees around the room; they rely on sensors placed elsewhere in the room.

Many EVS employees complain about not having enough time to clean/sanitize each patient room thoroughly, how do you go about trying to change the culture of the environment?

Generally, when ES Technicians complain about not having enough time, it’s because they are missing the tools needed to do their jobs, specific protocols and/or clarification around time frames to complete certain tasks. When ES technicians understand that a new technology, such as UVC is supported by leadership, and the ES Technician is taking part in a hospital intervention that will save the hospitals $$, they become committed to the project that is supported by Leadership. Culture seems to be the hardest to change even if there is evidence-based data.

Do you adjust the room ventilation as part of your process?


Are there any of these units in the veterinary field?


How do you tell the difference between impact of bleach and impact of UVC if they are used in conjunction?

That is why it is hard to tell how much impact UV has on CDI.  In known CDI rooms bleach has to be used for ethical reasons.  But in looking at facilities already using bleach, adding UVC reduces their rates further.

Is there a market for UVC in clean room manufacturing, like medical device?

Yes, we have recommended hospitals to use UVC in their sterile processing rooms so in clean rooms it could also be useful

You mentioned reflective energy.  How much of the UV energy is reflected from standard paint walls?

The amount of UV energy that is reflected from walls and surfaces varies. Tru-D’s ability to measure the reflective UV energy ensures that the precise, lethal dose of UV reaches all surfaces in the room.

Did she say 4 minutes?

Yes. In the BETR-D study, room turnover was only impacted by 4 minutes when UV was added. Read more here.

To access the full webinar, click here.

Posted 10.24.17
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