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Technician in Surgery TS-C Practice Test

Category - Disinfection

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Which of the following describes the action of a gravity air displacement sterilizer?
  1. Pressurized steam pushes air out of the sterilizing chamber, and high-pressure steam sterilizes the instruments.
  2. Air is removed from the sterilizing chamber through a vacuum, and steam replaces the air to sterilize the instruments.
  3. Pressurized gas is pushed into the chamber to circulate with high levels of humidity, which sterilizes the instruments.
  4. Instruments are immersed in fluid, followed by humidified air that circulates at extremely high temperatures.
Explanation
Answer: A-A gravity air displacement sterilizer works when pressurized steam pushes air out of the sterilizing chamber, and high-pressure steam sterilizes the instruments. This is the action of one type of autoclave, used for steam sterilizing instruments and supplies. The instruments are placed within the enclosed chamber while the outer jacket controls the amount of steam emitted into the chamber. This steam displaces the air, and is then able to sterilize the instruments.
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