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Isolation Rooms and Isolation Anterooms With Appropriate Ventilation-Pressure Relationships Are

The document discusses different types of isolation rooms used in hospitals to prevent the spread of airborne viruses. It describes negative pressure isolation rooms, which maintain airflow into the room to contain contaminants using HEPA filters on exhaust. Positive pressure isolation rooms do the opposite, maintaining airflow out of the room to protect immunocompromised patients. It also mentions multi-level biohazard laboratories but does not provide details.

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109 views1 page

Isolation Rooms and Isolation Anterooms With Appropriate Ventilation-Pressure Relationships Are

The document discusses different types of isolation rooms used in hospitals to prevent the spread of airborne viruses. It describes negative pressure isolation rooms, which maintain airflow into the room to contain contaminants using HEPA filters on exhaust. Positive pressure isolation rooms do the opposite, maintaining airflow out of the room to protect immunocompromised patients. It also mentions multi-level biohazard laboratories but does not provide details.

Uploaded by

CIVIL
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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www.PDHcenter.com PDH Course M143 www.PDHonline.

org

(2) The specific requirements for ventilation and filtration to dilute and remove contamination in

the form of odor, airborne microorganisms and viruses, and hazardous chemical and

radioactive substance;

(3) The different temperature and humidity requirements for various areas; and

(4) The design sophistication needed to permit accurate control of environmental conditions."

Isolation rooms and isolation anterooms with appropriate ventilation-pressure relationships are

the primary means used to prevent the spread of airborne viruses in the hospital environment."

The isolation rooms can be classified in three basic categories:

• Negative Pressure Isolation Rooms

• Positive Pressure Isolation Rooms

• Multi-level Biohazard Laboratories

1) Negative Pressure Isolation Rooms maintain a flow of air into the room, thus keeping

contaminants and pathogens from reaching surrounding areas. Because of potential litigation

concern, the exhaust air is also normally filtered through HEPA filters to ensure

contamination free release to environment. Generally the infectious areas are maintained

negative pressure with respect to adjacent spaces. A simple example of negative pressure

isolation room is in health industry for Tuberculosis (TB) Rooms. 6 to 12 air changes are

recommended from TB rooms. Supply air to the room, is also filtered. Ultraviolet Germicidal

Irradiation (UVGI), commonly known as UV light, may be used to augment HEPA filters, but

cannot be used in place of HEPA filters, as their effectiveness on airstreams is limited.

2) Positive Pressure Isolation Rooms maintain a flow of air out of the room, thus protecting the

patient from possible contaminants and pathogens, which might otherwise enter. The most

common application today is HIV Rooms and rooms for patients with other types of

immunodeficiency. For such patients it is critically important to prevent the ingress of any

pathogens, including even common fungi and bacteria, which may be harmless to healthy

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