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CRCST EXAM VERSION 2 NEWEST
ACTUAL EXAM COMPLETE 250
QUESTIONS AND CORREC T
DETAILED ANSWERS|A+ GRADED
Question 1: When selecting a disinfectant for use in a
healthcare setting, which factor is MOST critical in ensuring efficacy against a broad range of pathogens?
CORRECT ANSWER : The spectrum of activity
claimed on the product label.
Question 2: In the process of decontamination, what is the
PRIMARY purpose of using a mechanical washer?
CORRECT ANSWER : To remove organic and
inorganic material from instruments.
Question 3: Which of the following factors is MOST
critical in determining the appropriate level of disinfection for medical devices?
CORRECT ANSWER : The intended use of the device
(critical, semi-critical, non-critical).
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Question 4: When assessing the efficacy of a disinfection
process, which of the following is the MOST reliable method to verify outcomes?
CORRECT ANSWER : Microbiological cultures of
disinfected devices.
Question 5: Which of the following best describes the
principle of "time-related microbial kill" in the context of disinfection?
CORRECT ANSWER : Some microorganisms may
survive initial contact but are killed over a defined exposure time.
Question 6: When implementing a high-level disinfection
process, which factor MOST significantly influences the effectiveness of the disinfectant?
CORRECT ANSWER : The presence of biofilm on
medical devices.
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Question 7: In the context of disinfection, what is the
PRIMARY reason for the failure of a chemical disinfectant to achieve its intended efficacy?
CORRECT ANSWER : Failure to adhere to the
manufacturer's recommended contact time and concentration.
Question 8: What is the MOST appropriate action to take
when a medical device cannot be completely dried after cleaning and before disinfection?
CORRECT ANSWER : Dry the device using sterile
compressed air or a clean, lint-free cloth.
Question 9: When selecting personal protective
equipment (PPE) for use during the cleaning and decontamination process, which of the following is the MOST important consideration?
CORRECT ANSWER : The level of protection provided
against the specific risks involved in the process.
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Question 10: What is the primary reason for performing a
pre-cleaning step immediately after the use of surgical instruments before they undergo formal decontamination processes?
CORRECT ANSWER : To remove gross contamination
and prevent the drying of organic material.
Question 11: During the cleaning process, why is it
important to use water with a neutral pH rather than water that is highly acidic or basic?
CORRECT ANSWER : It prevents corrosion and
damage to the instruments.
Question 12: What is the significance of using enzymatic
cleaners in the pre-cleaning phase of instrument decontamination?
CORRECT ANSWER : They break down organic matter
such as blood and tissue.