A surgical case has just ended and the scrub person is preparing instruments for transport to the decontamination area. What is the correct point-of-use treatment?

Remove gross soil and keep the instruments moist until they reach decontamination

Allow the instruments to air dry so blood flakes off during transport

Spray the instruments with saline and wrap them in a dry towel

Perform a full manual wash at the sterile field before transport

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)?

Heat above that point coagulates protein soil and bonds it to the instrument surface

Higher temperatures cause the detergent to foam excessively and overflow the sink

Higher temperatures make it impossible to see instruments below the water line

Higher temperatures deactivate the chlorides that dissolve blood

Instrument sets are consistently arriving in decontamination with hard, dried blood in box locks and serrations. What is the most likely root cause?

Point-of-use treatment is not being performed and the sets sit too long before processing

The washer-disinfector detergent concentration is set too high

The decontamination area humidity is above 60 percent

The transport carts are being covered too tightly

Immediate-use steam sterilization (IUSS) is requested for a single dropped instrument during a case. Which statement is correct?

The item must still be thoroughly cleaned and decontaminated before it is placed in the sterilizer

Cleaning may be abbreviated because the exposure temperature is higher

The item may be flash sterilized unwrapped and stored for later use if kept covered

IUSS eliminates the need for physical, chemical, and biological monitoring

Rigid sterilization containers are being loaded into a steam sterilizer along with wrapped trays. What is correct practice?

Place containers flat on the shelf, do not stack unless the container manufacturer validates stacking, and keep them from touching chamber walls

Stack containers three high to conserve shelf space

Place containers on the top shelf so condensate drains onto the wrapped trays below

Turn containers on edge so water drains from the filter ports

A Class 1 chemical indicator is applied to the outside of every wrapped tray. What does it tell the user?

That the package has been exposed to a sterilization process and distinguishes processed from unprocessed packages

That all critical parameters of the cycle were met

That the contents are sterile and safe for patient use

That air was successfully removed from the chamber

A nurse reports that a tray opened in the operating room contained an internal chemical indicator that did not change. What is the correct action?

Do not use the tray, return it for reprocessing, and investigate the cycle records and the rest of the load

Use the tray if the external tape changed color, since two indicators are redundant

Use the tray but document the indicator failure afterward

Replace the indicator and reseal the tray in the operating room

A peel pouch is being prepared for a single ring-handled instrument. Which practice is correct?

Select a pouch size that lets the item fit without stressing the seals, place the item so the handle enters the pouch first, and do not double pouch unless the pouch manufacturer validates it

Fill the pouch completely so the instrument cannot shift during handling

Fold the pouch over to fit a long instrument and seal it with tape

Write the contents on the paper side with a ballpoint pen

Which list correctly ranks microorganisms from most resistant to least resistant to sterilization and disinfection?

Prions, bacterial spores, mycobacteria, nonenveloped viruses, fungi, vegetative bacteria, enveloped viruses

Enveloped viruses, vegetative bacteria, fungi, bacterial spores, prions

Vegetative bacteria, bacterial spores, prions, fungi, mycobacteria

Fungi, prions, enveloped viruses, bacterial spores, mycobacteria

CSLB General Building (B) Trade Exam — Free Practice Test

常见问题

这里有多少道 HSPA Sterile Processing (CRCST) 练习题?+

一整套原创 HSPA Sterile Processing (CRCST) 练习题,覆盖官方内容板块、按真实考试权重分布、附解析。免费,无需注册。

HSPA Sterile Processing (CRCST) 考试是什么样的?+

大约 150 道题、180 分钟。先在这里按主题刷题,再做完整计时模考检验准备度。

这些是真实考题吗?+

不是。每道题都是 100% 原创,依据公开一手来源编写并附解析。我们从不抄袭真题或付费备考资料。

我可以用中文或西班牙语学吗?+

PrepPass 练习提供英文、中文、西班牙文。官方考试以英文进行 —— 你随时可以把题目语言切回英文,熟悉考试当天的确切术语。

样题与解析

以下是本题库中的部分真题与完整解析。完整题库请用上方的刷题工具。

1. Decontamination
A surgical case has just ended and the scrub person is preparing instruments for transport to the decontamination area. What is the correct point-of-use treatment?
- a.Remove gross soil and keep the instruments moist until they reach decontamination
- b.Allow the instruments to air dry so blood flakes off during transport
- c.Spray the instruments with saline and wrap them in a dry towel
- d.Perform a full manual wash at the sterile field before transport
答案: a
解析: Point-of-use treatment means wiping away gross soil and applying a moisture-retention product or damp towel so bioburden does not dry onto surfaces. Dried blood and protein are far harder to remove and can block sterilant contact. Saline is corrosive to instrument alloys, and full cleaning is never performed in the operating room because it creates contaminated aerosols in a sterile environment.
依据: AAMI ST79
2. Decontamination
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
答案: c
解析: 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.
依据: AAMI ST79
3. Decontamination
Instrument sets are consistently arriving in decontamination with hard, dried blood in box locks and serrations. What is the most likely root cause?
- a.Point-of-use treatment is not being performed and the sets sit too long before processing
- b.The washer-disinfector detergent concentration is set too high
- c.The decontamination area humidity is above 60 percent
- d.The transport carts are being covered too tightly
答案: a
解析: Dried, baked-on soil is the classic signature of missing point-of-use treatment combined with delayed transport, and the fix is education of the procedural areas plus prompt pickup. Excess detergent does not create dried soil, and it would be observed after washing rather than on arrival. High humidity would tend to keep soil moist, and covering carts protects rather than harms the instruments.
依据: AAMI ST79
4. Sterilization
What is a standard gravity displacement steam cycle for a wrapped instrument set at 250 degrees F (121 degrees C)?
- a.3 minutes
- b.10 minutes
- c.30 minutes
- d.60 minutes
答案: c
解析: At the lower temperature of 250 degrees F, a gravity cycle needs about 30 minutes of exposure to achieve the required lethality, plus drying time. Shorter exposures of 3 or 10 minutes do not deliver sufficient lethality at that temperature for a wrapped set. Sixty minutes exceeds the validated requirement and unnecessarily stresses instruments; time and temperature are inversely related, so higher temperature permits shorter exposure.
依据: AAMI ST79
5. Sterilization
Immediate-use steam sterilization (IUSS) is requested for a single dropped instrument during a case. Which statement is correct?
- a.The item must still be thoroughly cleaned and decontaminated before it is placed in the sterilizer
- b.Cleaning may be abbreviated because the exposure temperature is higher
- c.The item may be flash sterilized unwrapped and stored for later use if kept covered
- d.IUSS eliminates the need for physical, chemical, and biological monitoring
答案: a
解析: IUSS shortens the packaging and drying steps, not the cleaning step, and a device that is not properly cleaned cannot be sterilized by any cycle. Items processed by IUSS are transported for immediate use and are not stored for later cases. Physical monitors and chemical indicators are used with every IUSS cycle, and the sterilizer is monitored biologically at least daily or weekly per policy.
依据: AAMI ST79
6. Sterilization
Rigid sterilization containers are being loaded into a steam sterilizer along with wrapped trays. What is correct practice?
- a.Stack containers three high to conserve shelf space
- b.Place containers on the top shelf so condensate drains onto the wrapped trays below
- c.Place containers flat on the shelf, do not stack unless the container manufacturer validates stacking, and keep them from touching chamber walls
- d.Turn containers on edge so water drains from the filter ports
答案: c
解析: Containers must sit level so condensate can drain through the designed pathway, and stacking is permitted only when the container manufacturer has validated it, because stacking can block steam access and trap moisture. Items should never contact chamber walls, where they can be scorched or collect condensate. Putting containers above absorbent wrapped packs invites wet packs, and turning them on edge defeats the drainage design.
依据: AAMI ST79
7. Monitoring & QA
A Class 1 chemical indicator is applied to the outside of every wrapped tray. What does it tell the user?
- a.That all critical parameters of the cycle were met
- b.That the contents are sterile and safe for patient use
- c.That the package has been exposed to a sterilization process and distinguishes processed from unprocessed packages
- d.That air was successfully removed from the chamber
答案: c
解析: Class 1 process indicators, such as autoclave tape and preprinted pouch indicators, only distinguish processed from unprocessed items and do not measure whether the cycle was adequate. Confirming that all critical variables were met is the role of Class 5 integrating indicators, and air removal is verified by a Class 2 Bowie-Dick test. Sterility is never established by any single indicator.
依据: AAMI ST79
8. Monitoring & QA
A nurse reports that a tray opened in the operating room contained an internal chemical indicator that did not change. What is the correct action?
- a.Do not use the tray, return it for reprocessing, and investigate the cycle records and the rest of the load
- b.Use the tray if the external tape changed color, since two indicators are redundant
- c.Use the tray but document the indicator failure afterward
- d.Replace the indicator and reseal the tray in the operating room
答案: a
解析: An internal indicator that failed to change means sterilant may not have reached the interior of the package, so the tray is treated as unsterile and reprocessed while the load records and remaining packages are reviewed. External tape only shows the package was exposed to a process, so it cannot override an internal failure. Resealing or using the tray and documenting later places the patient at risk.
依据: AAMI ST79
9. Prep, Packaging & Storage
A peel pouch is being prepared for a single ring-handled instrument. Which practice is correct?
- a.Select a pouch size that lets the item fit without stressing the seals, place the item so the handle enters the pouch first, and do not double pouch unless the pouch manufacturer validates it
- b.Fill the pouch completely so the instrument cannot shift during handling
- c.Fold the pouch over to fit a long instrument and seal it with tape
- d.Write the contents on the paper side with a ballpoint pen
答案: a
解析: A properly sized pouch keeps the seals intact, permits steam entry through the porous side, and allows the package to be opened aseptically with the handle presented first. Overfilling stresses seals, and folding or taping a pouch prevents sterilant contact and creates an unvalidated package. Labeling is done on the plastic side, outside the seal, with a non-bleeding marker, because writing on the paper side can damage the sterile barrier.
依据: AAMI ST79
10. Infection Prevention & Safety
Which list correctly ranks microorganisms from most resistant to least resistant to sterilization and disinfection?
- a.Prions, bacterial spores, mycobacteria, nonenveloped viruses, fungi, vegetative bacteria, enveloped viruses
- b.Enveloped viruses, vegetative bacteria, fungi, bacterial spores, prions
- c.Vegetative bacteria, bacterial spores, prions, fungi, mycobacteria
- d.Fungi, prions, enveloped viruses, bacterial spores, mycobacteria
答案: a
解析: Prions are the most resistant agents known and require special extended reprocessing protocols, followed by bacterial spores, which is why spores are used as the challenge organism in biological indicators. Enveloped viruses such as hepatitis B and HIV are among the easiest organisms to inactivate because their lipid envelope is fragile. The other sequences reverse or scramble this hierarchy.
依据: CDC

CSLB General Building (B) Trade Practice Test

常见问题

样题与解析