負壓

負壓是医院和医疗中心用来阻止不同病房之间交叉感染的一种隔离技术[1][2]。負壓需要一種能使病房對外施加的压力低于周围环境對病房的压力的排风装置，帶有負壓效果的病房稱為負壓病房。空气在流入負壓病房後，不会从負壓病房中逸出，因为空气会自然地从压力较高的区域流向压力较低的区域，因此負壓病房能阻止含有病菌的空气从病房中逸出[3][4]。

負壓病房內原本空气被排出，从而負壓病房內成為负气压狀態，此時外界空氣進入負壓病房

参考文献

Negative Room Pressure to Prevent Cross-Contamination, Clean Air Solutions, Camil Farr, 的存檔，存档日期2016-03-10.Retrieved 2010-03-10.
Isolation Rooms & Pressurization Control 的存檔，存档日期2010-03-04., Penn State Department of Architectural Engineering, © 2008 The Pennsylvania State University. Retrieved 2010-03-10.
Negative Pressure Isolation Rooms & Tuberculosis (TB) Isolation Rooms, AirMont Inc. Retrieved 2010-03-10. 的存檔，存档日期2014-01-17.
Hoffman, P. N.; Weinbren, M. J.; Stuart, S. A. . The Journal of Hospital Infection. 2004, 57 (4): 345–6. PMID 15262397. doi:10.1016/j.jhin.2004.04.013.

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[camil-1] Negative Room Pressure to Prevent Cross-Contamination, Clean Air Solutions, Camil Farr, 的存檔，存档日期2016-03-10.Retrieved 2010-03-10.

[2] Isolation Rooms & Pressurization Control 的存檔，存档日期2010-03-04., Penn State Department of Architectural Engineering, © 2008 The Pennsylvania State University. Retrieved 2010-03-10.

[3] Negative Pressure Isolation Rooms & Tuberculosis (TB) Isolation Rooms, AirMont Inc. Retrieved 2010-03-10. 的存檔，存档日期2014-01-17.

[4] Hoffman, P. N.; Weinbren, M. J.; Stuart, S. A. . The Journal of Hospital Infection. 2004, 57 (4): 345–6. PMID 15262397. doi:10.1016/j.jhin.2004.04.013.