AEG mintie ECU4 Manuale d'uso - Pagina 12

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Is it safe to recirculate HEPA- ltered air back into the hospital?
Yes. The CDC EIC Guidelines expressly permit recirculating HE PA ltered air in patient-populated hospital
areas. ("Guidelines for Environmental Infection Control, " MMWR, Vol. 52, June 6, 2003, 12) A typical hospital
corridor is ltered at 80% e ciency; much lower than when ltered through a HEPA lter, which captures
99.97% of all airborne particulates. HEPA-filtered air is of same quality as that used in bone marrow
transplant rooms, cardiac and orthopedic operating rooms. The ECU4™ isolates airborne infectious
contaminates and filters them through HEPA-filt ered negative air equipment, after which the air can be
safely recirculated back into the hospital corridor. This system eliminates the need to have the ltered air
ducted into an existing return air or exhaust system, as required when using a portable negative air
machine inside the patient room.
How does the ECU4™ protect the health care worker in the room?
As with all isolation rooms, the ventilation system does not kill the microorganisms, and health care
workers should always wear PPE while in a room with infectious or suspected infectious patients. The ECU4™
provides an area apart from the infectious isolation where the caregiver can don or remove PPE. When
exiting the room into the ECU4™ the health care worker will need to briefly wait for the ECU™ to purge the
air of particulate before removing the mask and protective outerwear. Typically, it will take only a few
seconds for the volume of air to be scrubbed through the HEPA filter.
Does the ECU4™ need to be tested with a pressure device after it is
initially set up?
Yes. The CDC EIC Guidelines require every isolation room to have its pressurization checked before a
patient is placed in the room, and then daily when the room is occupied by an infectious patient. This
test can be accomplished using a utter strip, smoke tube, or a handheld manometer.
How does the ECU4™ meet the new CDC Environmental Guidelines for Infection
Control in Health Care Facilities?
The CDC recommends the use of airborne infectious isolation rooms, preferably with an anteroom,
for person with diagnosed or suspected airborne infectious diseases. The ECU4™ is a short-term anteroom,
and functions in the same way as a permanent installation anteroom, with a HEPA-filtered negative air
machine replacing the air intake grill. When using the ECU4™ to convert a standard room into a short-term
isolation unit what must I do to the return air inlets? To keep any infectious particulates from entering into
the return air system and being recirculated back into the general air stream, the patient room return air
grills will need to be blocked o with a nonporous material or covered with a HEPA lter medium. The
use of HEPA lters will depend on the volume of supply air into the room. If the supply volume is too great,
either the negative air machine exhaust volume will need to be increased or the return grilles will need
to be covered with the HEPA so some air is being exhausted from the room. This is a condition that should
rarely exist as the negative air machine exhausts over 425 cubic feet per minute.
Will the ECU4™ violate the NFPA's Life Safety Code referenced by the Joint Commission and
Centers for Medicare and Medicaid Services?
No. The ECU™ is only 31.31" wide and in a standard 8'0" corridor there will still be plenty of room
to maneuver beds, gurneys, environmental service equipment, crash carts, etc. Given the short-term
nature of the solution, and the wheels on the ECU,™ moving it will not be a problem in
times of crisis or special needs. The health care organization will need to implement interim life safety
measures and have an action plan to move the ECU™ in the event of a fire. The ECU™ containment
envelope material is constructed using a poly fabric ripstop that is FR rated, tested U.S. ASTM E 84
flame-resistant standards.
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