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CRCST EXAM PREP NEWEST 2025 ACTUAL EXAM
TEST BANK| COMPLETE 470 REAL EXAM QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS WITH RATIONALES) ALREADY GRADED
A+| CRCST EXAM PREP 2025|| BRAND NEW!!
Bacteria which cause disease are called
- gram positive.
- gram negative.
- pathogens.
- potentially infectious. – Correct Answer - c. pathogens
A pathogen is any microorganism (bacteria, virus, fungus, etc.) that causes disease.
The U.S. Food and Drug Administration is responsible for
- maintaining all manufacturer records.
- ensuring items can be properly cleaned and sterilized.
- monitoring the high-level disinfection process.
- ensuring food, drugs and cosmetics are safe for use. – Correct Answer
- ensuring food, drugs and cosmetics are safe for use.
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The FDA (Food and Drug Administration) is a regulatory agency of the U.S. Department of Health and Human Services. It ensures that foods, medications, biological products, medical devices, and cosmetics are safe, effective, and properly labeled before reaching the public.
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pg. 2 Their primary role is to protect public health by ensuring these products are safe, properly labeled, and effective where applicable. When you see FDA — think product safety regulation for anything you consume, apply, or ingest.
The basics of aseptic technique is
- knowing the chain of infection.
- activities that prevent infection.
- following the Bloodborne Pathogen Standard.
- all the above. – Correct Answer - b. activities that prevent infection.
Aseptic technique refers to practices and procedures that healthcare workers use to protect patients from infection by preventing contamination of sterile areas and equipment.At its core, aseptic technique is about doing things in a way that keeps harmful microorganisms away from patients, sterile equipment, and operative areas.
The decontamination area of the Central Service department should have
- negative air flow.
- positive air flow.
- filtered air flow.
- no air exchanges because it is a biohazard area. – Correct Answer - a.
negative air flow.To prevent contaminated air from flowing into clean areas, the room is maintained under negative air pressure — meaning air flows into the decontamination room but not out. 2 / 4
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pg. 3 The surgery of the ear that reconstructs the eardrum so sound waves can be sent to the middle ear
- tympanoplasty.
- stapedectomy.
- auditory implantation.
- myringotomy – Correct Answer - a. tympanoplasty
Dark areas on the lens of an endoscope are?
- Debris
- Light-emitting diode optics
- Light-emitting diode bulbs
- Damaged light fibers – Correct Answer - d. Damaged light fibers
In endoscopes, light is transmitted through bundled light fibers. If any of those fibers become damaged or broken, it causes dark areas in the visual field when looking through the endoscope. This is a key inspection point during processing to ensure the scope is safe and effective for use.
Soiled instruments and other items are received in the area of the Central Service department.
- preparation
- packaging
- decontamination
- sterilization – Correct Answer - c. decontamination
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pg. 4 The Decontamination Area is the first stop for soiled instruments, where bioburden is removed and the instruments are cleaned and disinfected before they move on to preparation and packaging. It's a dirty-to-clean workflow principle that ensures infection control and worker safety.
Pasteurizers disinfect using
- heated water.
- phenols.
- high-level disinfectants.
- peracetic acid. – Correct Answer - a. heated water
Pasteurizers disinfect semi-critical items using hot water at temperatures typically between 150°F and 170°F (65°C–77°C) for a specific exposure time, which effectively kills many microorganisms without the use of chemical disinfectants.
Agency which may intervene in a matter of worker protection even if there are no specific regulations covering the situation.
- Occupational Safety and Health Administration
- Environmental Protection Agency
- U.S. Food and Drug Administration
- Association of periOperative Registered Nurses – Correct Answer - a.
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Occupational Safety and Health Administration OSHA is empowered to act in any situation where worker safety may be at risk, even in the absence of a specific regulation, under the General Duty Clause of the Occupational Safety and Health Act. This ensures a safe working environment for employees.