Editing Positive pressure (section)

== Historic utility ==

=== Industrial utility ===
Industrial use of positive pressure systems are commonly used to ventilate confined spaces with dust, fumes, pollutants and/or high temperatures <ref>Positive pressure technology for construction and industrial ventilation applications.

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=== Clinical utility ===
Many hospitals are equipped with negative and positive pressure rooms just for the purposes described. [[Negative room pressure|Negative pressure rooms]] are used to help keep airborne pathogens (eg. aerosolized [[Coronavirus disease 2019|COVID-19]] and active [[Tuberculosis|TB]]) from escaping into surrounding areas, thereby preventing the spread of airborne pathogens to outside the room. Positive pressure rooms are used for [[immunocompromised]] persons (eg. [[Neutropenia|Neutropenic]]) whereby controlled quality air is sent into the room to prevent random (and potentially polluted) air from entering the room.<ref>{{Cite journal|last=Rosenbaum|first=Robert A.|last2=Benyo|first2=Jeffrey S.|last3=O'Connor|first3=Robert E.|last4=Passarello|first4=Brent A.|last5=Williams|first5=Daniel R.|last6=Humphrey|first6=Brian D.|last7=Ross|first7=Robert W.|last8=Berry|first8=James M.|last9=Krebs|first9=Jeffrey G.|date=December 2004|title=Use of a portable forced air system to convert existing hospital space into a mass casualty isolation area|journal=Annals of Emergency Medicine|volume=44|issue=6|pages=628–634|doi=10.1016/j.annemergmed.2004.03.012|issn=1097-6760|pmc=7118873|pmid=15573039}}</ref>  The CDC recommends a positive pressure differential of at least 2.5 Pa between the positively pressured room and the adjoining hallway. <ref>{{cite web |url=https://www.cdc.gov/infection-control/hcp/environmental-control/recommendations.html |title=Part II. Recommendations for Environmental Infection Control in Health-Care Facilities |publisher=CDC |access-date=November 11, 2024 }}</ref>