Decontamination第 9 / 100 题
An ultrasonic cleaner has just been filled with fresh solution at the start of the shift. Why must the unit be degassed before instruments are processed?
a.Dissolved air in fresh solution cushions the sound waves and prevents effective cavitation
b.Degassing raises the solution to the required thermal disinfection temperature
c.Degassing removes residual detergent from the previous shift
d.Degassing sterilizes the solution so instruments leave the unit sterile
解析
Fresh water holds dissolved gas that absorbs ultrasonic energy and dampens bubble formation, so the unit is run empty for several minutes to drive the gas out and restore full cavitation. Degassing is not a heating, rinsing, or sterilizing step. An ultrasonic cleaner never sterilizes; it is a cleaning device only.
法律依据: AAMI ST79免费刷完整 100 道题库 — 无需注册。
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