DecontaminationCâu 11 / 100
A technician fills the wash sink with very hot water to speed up cleaning. Why must manual cleaning water stay below approximately 140 degrees F (60 degrees C)?
a.Higher temperatures cause the detergent to foam excessively and overflow the sink
b.Higher temperatures make it impossible to see instruments below the water line
c.Heat above that point coagulates protein soil and bonds it to the instrument surface
d.Higher temperatures deactivate the chlorides that dissolve blood
Giải thích
Protein denatures and coagulates with heat, so hot water effectively bakes blood and tissue onto instruments and makes removal much harder. Enzymatic detergents also lose activity outside the temperature window on the label. Foaming, visibility, and chloride activity are not the reason for the temperature limit.
Trích dẫn luật: AAMI ST79Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A technician is orienting a student at the ultrasonic cleaner and is asked what actually removes the soil from the instruments. What is the correct answer?
- 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 technician loads a mixed basket of stainless steel clamps, chrome-plated retractors, and aluminum instruments into the ultrasonic cleaner. What is the problem with this load?
- Most instrument manufacturers specify a neutral pH detergent for routine cleaning. What pH range is considered neutral?
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- A technician is scrubbing a hinged instrument with a brush at the decontamination sink and is spraying water droplets into the air. What is the correct technique?
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