Healthcare Design - August 2014 - 54
| 08.14
the cost and increased maintenance required.
In the end, each decision about air distribution,
filtration, and pressurization should be considered
in the perspective of the end goal: clean air for the
patient and better patient outcomes.
Designers have the opportunity to facilitate
proper maintenance by understanding how
systems will be operated both at the clinical
and facilities levels.
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54
HCDmagazine.com 08.14
Humidity
Another important factor that contributes to the
transmission of HAIs is humidity. In oxygenenriched environments like surgery, low humidity
creates the risk of static discharge and possible
fire. Conversely, if humidity is too high, there's a
risk of growing harmful organisms like mold or
bacteria that cause HAIs. Keeping humidity within
the ideal range of 20 to 60 percent is extremely
important for patient safety.
If the humidistat is located on the surgery room
walls, which it generally is, there will be a sharp
differential between the actual humidity level at
the patient and the humidity level measured at the
humidistat.
One solution is to place the humidistat in a
location that's both easily accessible and provides
an accurate reading of the patient's immediate
environment. The current best practice is to have
the humidistat located in the exhaust/return air
duct with an access door for maintaining calibration and service. The sensor would also be connected to the HVAC building automation system
and allow for continuous monitoring. Then, if the
humidity falls out of range, the system would alert
a facilities manager to immediately implement
dehumidification or humidification strategies.
Designing for maintenance
Poor maintenance is also a leading cause of
environmental conditions that lead to HAIs.
Examples include loose filters allowing air to pass
by without filtration, old filters not changed until
they're clogged and blocking needed airflow, and
dangerous outgrowth of mold on filters that leads
to dirty air reaching patients.
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Healthcare Design - August 2014
Table of Contents for the Digital Edition of Healthcare Design - August 2014
Contents
Healthcare Design - August 2014 - Cover1
Healthcare Design - August 2014 - Cover2
Healthcare Design - August 2014 - 1
Healthcare Design - August 2014 - 2
Healthcare Design - August 2014 - 3
Healthcare Design - August 2014 - Contents
Healthcare Design - August 2014 - 5
Healthcare Design - August 2014 - 6
Healthcare Design - August 2014 - 7
Healthcare Design - August 2014 - 8
Healthcare Design - August 2014 - 9
Healthcare Design - August 2014 - 10
Healthcare Design - August 2014 - 11
Healthcare Design - August 2014 - 12
Healthcare Design - August 2014 - 13
Healthcare Design - August 2014 - 14
Healthcare Design - August 2014 - 15
Healthcare Design - August 2014 - 16
Healthcare Design - August 2014 - 17
Healthcare Design - August 2014 - 18
Healthcare Design - August 2014 - 19
Healthcare Design - August 2014 - 20
Healthcare Design - August 2014 - 21
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Healthcare Design - August 2014 - Cover3
Healthcare Design - August 2014 - Cover4
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