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2025 - 2026 CRCST EXAM|450QUESTIONS AND
ANSWERS|GRADED A+|100% VERIFIED|
In cleaning and sterilization process of instruments, final rinse refers to A. Final cleaning of instruments in detergents before they are placed in the sterilizer B. The final rinse cycle of the sterilizer C. Removing chemical residues and debris from instrument with deionized or reverse osmosis water D. Thoroughly cleaning the instruments with softened water >>>ANS:->>> C. Removing chemical residues and debris from instrument with deionized or reverse osmosis water A molecular reaction that creates an uncontrolled release of energy is called A. combustion B. polymerization C. fire D. Vaporization >>>ANS:->>> B. polymerization What is the required air pressure level in the decontamination area relative to the surrounding areas? A. A positive air pressure
B. A negative air pressure C. Atmospheric pressure D. Neutral air pressure >>>ANS:->>> B. A negative air pressure How should basin sets be placed in steam sterilizer? A. placed on edge B. loaded first C. placed in an upright position D. placed in a wire basket >>>ANS:->>> A. placed on edge What is worn to protect the technicians in the decontamination area from contamination A. SCRUB B. PPE C. HAZMAT suit
nostrils A. Nasoplasty B. Rhinoplasty C. Arthroplasty D. Septoplasty >>>ANS:->>> D. Septoplasty What FDA device classification does Chemical indicators fall into? A. Class I B. Class II C. Class III D. Chemical indicators are not yet regulated >>>ANS:->>> B. Class II Validation is done by device manufacturer and verification is performed by healthcare facility A. True B. False >>>ANS:->>> A. True With this delivery system, the facility keeps minimal stock on hand and supplies are delivered when needed, usually just prior to use:
A. Stockless B. Just-in time C. Perpetual D. Requisition >>>ANS:->>> B. Just-in time Which surgical procedure removes tissue or displaced bone from the wrist to release pressure on the median nerve? A. Ulner Nerve Transposition B. Fasciotomy C. Carpal Tunnel Repair D. Arthrotomy >>>ANS:->>> C. Carpal Tunnel Repair Which of these statements about microorganisms is true? A. Healthy humans do not carry microorganisms B. Microorganisms are necessary for life C. Microorganisms die within one day of leaving the body D. All microorganisms are harmful to humans >>>ANS:->>> B. Microorganisms are necessary for life Which of these is an example of a fungal infection?
A. Requisition system B. Case cart system C. Exchange cart system D. Max cart system >>>ANS:->>> C. Exchange cart system Which class of disinfectants do Phenolics belong to? A. Sterilizers B. High-level disinfectants C. Intermediate to low-level disinfectants D. Intermediate to high level disinfectants >>>ANS:->>> C. Intermediate to low-level disinfectants What type of hepatitis vaccine is strongly recommended for most healthcare workers? A. Hepatitis A B. Hepatitis B C. Hepatitis C D. Hepatitis D >>>ANS:->>> B. Hepatitis B Case carts can be used for general supply replenishment
A. True B. False >>>ANS:->>> B. False What is OSHA-PEL's 8 - hour TWA limit for the Hydrogen Peroxide (H2O2)? A. 0.1 ppm B. 0.2 ppm C. 1 ppm D. 5 ppm >>>ANS:->>> C. 1 ppm Which of the following are removed by water softeners? A. Calcium and magnesium B. Iron and pyrogens C. Silicates and pyrogens D. Chloride and iron >>>ANS:->>> A. Calcium and magnesium Where should 100% ethylene oxide gas canisters be stored? A. Outside the building B. In the deep freezer C. next to the fire extinguisher D. in a chemical storage cabinet >>>ANS:->>> D. in a chemical storage cabinet
Until cleaning can begin it is important to: A. Discard all disposable items B. Keep instruments moist C. Remove gross soil by wiping it off the items D. Sort instruments according to the cleaning process that will be used
ANS:->>> B. Keep instruments moist Which of the following about battery powered surgical instruments is true? A. should be cleaned using a mechanical washer B. should only be washed under water with the batteries removed C. Cannot be immersed D. should be cleaned at the point of use >>>ANS:->>> C. Cannot be immersed Where does the digestive process begin? A. Esophagus B. Mouth C. Stomach D. Colon >>>ANS:->>> B. Mouth
When should cleaning and decontamination begin? A. During use
B. It encourages rust and stains C. It prevents antimicrobial agents from reaching microorganisms D. All of the above >>>ANS:->>> C. It prevents antimicrobial agents from reaching microorganisms Vital organs in the body are protected by? A. Circulatory system B. Muscular system C. Endocrine system D. Skeletal system >>>ANS:->>> D. Skeletal system Which of the following devices are compatible with ozone sterilization? A. flexible endoscopes B. stainless steel instruments C. woven textiles D. natural rubber and latex E. natural rubber and latex >>>ANS:->>> B. stainless steel instruments Instrument washer sterilizers provide: A. dry heat sterilization B. a decontamination process
C. flash sterilization for immediate patient use
D. none of the above >>>ANS:->>> C. placed on the bottom shelf over the drain Which of these refers to the use of heat to kill all microorganisms A. Thermal Disinfection B. High-level Disinfection C. Mechanical Disinfection D. high-voltage disinfection >>>ANS:->>> A. Thermal Disinfection The body that requires preventive maintenance standards be established for medical equipment is? A. Joint Commission B. AAMI C. AORN D. OSHA >>>ANS:->>> A. Joint Commission The process by which microorganisms reproduce is known as: A. Binary fusion B. Bilateral Reproduction C. Binary Fission D. Multiplication >>>ANS:->>> C. Binary Fission
What word element tells the primary meaning of a word? A. Root B. Suffix C. Prefix D. combining >>>ANS:->>> A. Root How should paper-plastic peel pouches be placed in the sterilizer? A. paper side down B. on the bottom shelf C. plastic side down D. on their edge >>>ANS:->>> D. on their edge The sharpness of Kerrison and laminectomy ronguers is tested with A. Red test material B. Rubber testing material C. An index card D. A plastic dowel rod >>>ANS:->>> C. An index card The surgical procedure for the removal of the gall bladder is:
C. cushion instruments from the extreme force in steam sterilizer chambers D. allow air removal, steam penetration and facilitate drying >>>ANS:->>> C.cushion instruments from the extreme force in steam sterilizer chambers What happens if there is a discrepancy between the IFU and current standards and recommended practice on the use of a device? A. IFU will override professional standards B. Professional standards will override IFU C. Technician should use his judgement D. Scientific judgment be applied to make the best medical decision that promotes the safety of patient >>>ANS:->>> D. Scientific judgment be applied to make the best medical decision that promotes the safety of patient During handwashing, hands should be lathered and scrubbed for at least: A. 10 seconds B. 15 seconds C. 20 seconds D. 30 seconds >>>ANS:->>> C. 20 seconds In order to elevate the temperature in a steam sterilizer, which of the following must be done?
A.decrease the steam pressure B. achieve ambient pressure C. increase the steam pressure D. inject boiler amines >>>ANS:->>> C.increase the steam pressure According to Spaulding classification are classified as non-critical A. Flexible endoscope B. Cardiac Catheter C. Implant D. Blood pressure cuff >>>ANS:->>> D. Blood pressure cuff Which of the following means "beside or near"? A. Para B. Peri C. Intra D. Nect >>>ANS:->>> A. Para Why does the ultrasonic tank needs to be degassed? A.Excess bubbles make it difficult to see items being cleaned. B.Excess bubbles decrease the temperature
