22 Quality Assurance & Monitoring Practice Questions & Answers

1. 1. A hospital sterile processing department labels every package with a load control identifier before it enters the sterilizer. What is that identifier primarily for?

   • A.Proving the contents are sterile, because the label is applied only after a passing cycle
   • B.Tracing a package back to its sterilizer, cycle and date so it can be recovered in a recall✓ Answer
   • C.Recording a technician's output for the shift so assembly times can be compared across staff
   • D.Showing how long the package may sit in storage before it expires and must be reprocessed

   The lot (load) control identifier ties an item to the sterilizer, the cycle run and the date, which is what makes stock rotation, recall retrieval and problem tracing possible; ideally the identifier is recorded so a device can be traced to the patient it was used on. It is a traceability tool, not evidence of sterility.

   Source: ANSI/AAMI ST79, Section 13.3 (lot control identification and traceability)Report a problem with this question

2. 2. Why does a sterile processing department verify competency and require continuing education instead of relying on a technician's years of experience?

   • A.Because experienced staff can be exempted from routine departmental audits once competency has been verified once
   • B.Because devices and validated instructions change, and documented competency shows current practice is followed✓ Answer
   • C.Because continuing education credits are what set a technician's pay grade and promotion order within the hospital
   • D.Because a certified technician may approve changes to a reprocessing method without the supervisor reviewing them

   Instruments, sterilization technologies and validated manufacturer instructions change continually, so a method that was correct years ago may no longer be. Verified, documented competency and ongoing education are how a department shows that staff practice matches current instructions and standards, and they are why one technician's habit is never the final authority.

   Source: ANSI/AAMI ST79, personnel qualification, education and competency verification provisionsReport a problem with this question

3. 3. Which set of information must be documented in the sterilizer record for each sterilization cycle?

   • A.Sterilizer model and serial number, the water quality report, and the name of the department's quality lead
   • B.Load number, the surgeon and procedure the load was built for, and the storage location of each tray
   • C.Load number, contents of the load, exposure time and temperature, operator, and the indicator results✓ Answer
   • D.Load number, the wrap lot number, the room temperature and humidity at the time, and who transported it

   The per-cycle sterilizer record exists so that any load can be reconstructed after the fact: it captures the load number, a specific description of the contents, the exposure conditions if they are not on the recording chart, the operator, and the results of the biological indicator, Bowie-Dick test and the chemical indicator in the process challenge device, including nonresponsive indicators discovered later. This is a different list from the lot control identifier applied to each package.

   Source: ANSI/AAMI ST79, Section 13.3 (sterilizer records for each cycle)Report a problem with this question

4. 4. A steam cycle has ended and the printout shows it completed. Who decides the load may be released, and on what basis?

   • A.Any technician on duty may release it once the external indicator on each package has visibly changed
   • B.The sterilizer decides it, because a cycle that ends without an alarm has met every required parameter
   • C.The charge nurse in the operating room decides, because the receiving unit owns the risk of using the set
   • D.A knowledgeable person makes an active decision after evaluating all monitoring data for that load✓ Answer

   Release is an active judgment, not an automatic consequence of the cycle ending: an experienced, knowledgeable person reviews the physical monitors, the chemical indicators and any process challenge device result for that specific load before the items are distributed. Loads that do not meet the criteria must be clearly identified so they cannot be issued by mistake.

   Source: ANSI/AAMI ST79, Section 13.6 (load release criteria)Report a problem with this question

5. 5. A set containing an orthopedic implant is about to be sterilized. How must that load be monitored and handled?

   • A.With an external chemical indicator on every package in the load, which suffices because implants are wrapped separately
   • B.With a process challenge device holding a biological indicator and a Type 5 indicator, held until that result is read✓ Answer
   • C.With a Bowie-Dick test run immediately before the implant load, which substitutes for biological monitoring of implants
   • D.With a biological indicator in the next scheduled weekly test, because one implant does not change the monitoring schedule

   Every load containing an implant is monitored with a process challenge device containing both a biological indicator and a Type 5 integrating indicator, and the load is quarantined until the biological result is known. The biological indicator is the only monitor that directly measures lethality, and an implant is a permanent foreign body, so the consequence of a failed cycle is far greater than for a reusable instrument.

   Source: ANSI/AAMI ST79, Sections 13.5.2.1 and 13.6.3 (implant load monitoring and quarantine)Report a problem with this question

6. 6. A trauma case needs an implant set before its biological indicator has finished incubating. What does releasing it early require?

   • A.A verbal agreement with the surgeon, since the operating room assumes the risk once the set leaves the department
   • B.A documented medical exception traceable to the patient, with the indicator incubated and its result recorded✓ Answer
   • C.A passing external indicator on the container, which permits discarding the biological indicator unincubated
   • D.A second run of the same set in an immediate-use cycle, which replaces biological monitoring of the first load

   Releasing an implant before the biological result is known is unacceptable as a routine and is allowed only as a documented medical exception under a written policy developed with infection prevention, the surgeon and risk management. The indicator keeps incubating, its eventual result is documented, and the whole record must be traceable to the patient so the patient can be followed up if the result is positive.

   Source: ANSI/AAMI ST79, Section 13.6.3 (documented early release of implants)Report a problem with this question

7. 7. Today's biological indicator in the process challenge device is positive and no cause can be found. What happens to the loads processed since the last negative biological indicator?

   • A.They are released with a note in the record, and the sterilizer returns to service on a longer exposure
   • B.Only the load with the positive indicator is recalled, and the sterilizer keeps running with daily retesting
   • C.They stay in use while the sterilizer is retested, because a single positive is presumed a laboratory error
   • D.They are recalled and reprocessed, and the sterilizer stays out of service until the cause is corrected✓ Answer

   When the cause of a positive biological indicator is not immediately identified, the assumption must be that the sterilizer has been failing since it was last proven effective, so every load back to the last negative biological indicator is recalled and reprocessed and the sterilizer is removed from service. The recall is not delayed while a laboratory runs presumptive identification of the growth.

   Source: ANSI/AAMI ST79, Section 13.7.5 (sterilization process failures and recall)Report a problem with this question

8. 8. A biological indicator is positive, and the investigation immediately shows the operator selected the wrong cycle for that load. What is the correct response?

   • A.Release the load anyway, because an identified operator error shows the sterilizer itself worked correctly
   • B.Recall every load back to the last negative biological indicator, since a positive is a system failure
   • C.Correct the cause and reprocess that load only, documenting the failure and the corrective action✓ Answer
   • D.Take the sterilizer out of service for major-repair requalification before any further loads are processed

   A recall back to the last negative biological indicator is required only when the cause of the failure cannot be identified. Where the cause is found at once and is confined to a single load or item, such as the wrong cycle being selected, the correct action is to fix the cause, reprocess that load, and document both the failure and what was done about it.

   Source: ANSI/AAMI ST79, Section 13.7.5 (identified versus unidentified cause of failure)Report a problem with this question

9. 9. A sterilization process failure is reported to the supervisor and to infection prevention. What must the written report of the incident include?

   • A.The date and time, sterilizer identification, load control number, and the monitoring results for the load✓ Answer
   • B.The date and time, the number of packages in the load, and the purchase date of the indicator lot used
   • C.The names of all staff on duty, the room temperature log, and the water treatment system readings
   • D.The date and time, the operating room schedule for that week, and the shelf the packages were stored on

   The report has to contain everything needed to scope a recall and investigate the cause: when it happened, which sterilizer, the load control number that identifies the affected products, a description of the incident including any patients potentially affected, and the physical and chemical monitoring results, together with anything suggesting operator error. Without the load control number the affected items cannot be located.

   Source: ANSI/AAMI ST79, Sections 13.6.4 and 13.7.5 (reporting a sterilization process failure)Report a problem with this question

10. 10. A department is setting objective quality benchmarks for its own performance. Which set is used for that purpose in sterile processing?

    • A.Preference card revisions, patient length of stay and the operating room's on-time start rate
    • B.Staff overtime hours, trays wrapped per shift and the number of pouches ordered each month
    • C.Employee satisfaction scores, the share of the hospital budget held and vendor delivery times
    • D.Tray audit results, immediate-use sterilization rate, set turnaround time and case cart accuracy✓ Answer

    A quality process has to measure objective performance criteria that the department actually controls and that reflect patient risk, which is why tray audits, the immediate-use sterilization rate, instrument set turnaround time, case cart accuracy and inventory fill rates are the standard benchmarks. They are tracked over time and verified by regular audits as part of the facility-wide quality program.

    Source: HSPA CRCST content outline, Quality Assurance (benchmarks); ANSI/AAMI ST79, Section 14 (quality process improvement)Report a problem with this question

11. 11. A department uses event-related sterility for the items it processes. What does that mean in practice?

    • A.A package stays sterile until an event such as damage, moisture or handling compromises the packaging✓ Answer
    • B.A package stays sterile for the interval printed on it, after which it is reprocessed regardless of condition
    • C.A package stays sterile as long as it sits in a closed cabinet, so damage in an open-shelf area is ignored
    • D.A package stays sterile once its external indicator has changed, because the change confirms sterility

    Event-related sterility rests on the fact that microorganisms enter a package through a breach, not through the passage of time, so shelf life depends on the quality of the packaging, the storage conditions, the transport and the amount of handling. The facility must have a written policy for determining and indicating shelf life, and each package is inspected for those events before it is used.

    Source: ANSI/AAMI ST79, shelf life and event-related sterility provisionsReport a problem with this question

12. 12. Under an event-related shelf life policy, a commercially prepared sterile item in storage carries a manufacturer's expiration date that has passed. What is correct?

    • A.The item may be issued if it is run through one more cycle, which resets the manufacturer's date
    • B.The event-related policy replaces the date, so it may be issued while the package is dry and undamaged
    • C.The item may be issued after a technician re-inspects it and writes a new date on the outer wrapper
    • D.The printed date still governs and the item is pulled from stock, even though the package looks intact✓ Answer

    Event-related sterility applies to items the facility processes and packages itself; it does not override a date set by a manufacturer. An expiration date is honored whenever the product contains material that degrades over time, such as latex, or when a commercially prepared item carries one, because the date reflects the stability of the product rather than the integrity of the wrapper.

    Source: ANSI/AAMI ST79, shelf life provisions (manufacturer expiration dating)Report a problem with this question

13. 13. New sterile stock arrives and older packages of the same item are already on the shelf. How is the stock arranged?

    • A.The older packages are moved to the front and the new stock behind them, so the oldest is issued first✓ Answer
    • B.The new packages go in front, because the most recently processed item carries the lowest risk
    • C.The new stock goes on a separate shelf and the older packages are reprocessed before reshelving
    • D.The packages are arranged by size rather than date, since event-related sterility makes dates moot

    Sterile inventory is rotated first in, first out. Rotating stock limits how long any package sits in storage accumulating handling, dust and the chance of damage, and it prevents older stock from being pushed to the back where it is eventually wasted as expired or obsolete. Event-related sterility does not remove the need to rotate.

    Source: ANSI/AAMI ST79, sterile storage and stock rotation (first in, first out)Report a problem with this question

14. 14. Before a wrapped tray is issued from sterile storage, the technician inspects it. Which finding requires the tray to be pulled and reprocessed?

    • A.An external indicator that has changed color, because the change shows the package was processed twice
    • B.A label written by hand in ink, because only printed load labels can be traced back to a cycle
    • C.A small tear in the wrapper, because packaging integrity is what maintains sterility of the contents✓ Answer
    • D.A tray that was moved between shelves during a restock, because relocation breaks the package seal

    Sterility is maintained by the barrier, so any loss of packaging integrity, including holes, tears, broken seals, a missing container lock or moisture, means the contents can no longer be presumed sterile and the item returns for reprocessing. A changed external indicator is expected and simply shows the package was exposed to a process.

    Source: ANSI/AAMI ST79, Section 10.3 (inspection of packages before use)Report a problem with this question

15. 15. Rigid containers are taken off the sterilizer cart while still warm and set on a cool metal countertop. What is the consequence?

    • A.Cooling is faster, which shortens turnaround and is encouraged when the operating room is waiting
    • B.Condensate forms where the warm container meets the cool surface, and the packages are then contaminated✓ Answer
    • C.The filters dry sooner on metal, so the containers may be issued as soon as they feel cool to the touch
    • D.Nothing changes, because a sealed rigid container cannot be affected by the surface underneath it

    A warm item placed on a cool solid surface drives condensation at the interface, and moisture provides a path for microorganisms from the surface into the package, so anything wet is treated as contaminated. Loads are left on the cart in a low-traffic area and not touched until they reach room temperature; a container cooled too fast can also drip condensate onto the filter of a container below it.

    Source: ANSI/AAMI ST79, Section 10.4 (cooling and handling of sterilized items)Report a problem with this question

16. 16. In the operating room a tray is opened and its internal chemical indicator has not changed. The load printout and the other trays' indicators were acceptable. What should happen?

    • A.The whole load is declared nonsterile on the spot, and every item from it is discarded rather than reprocessed
    • B.The set is used as planned, because the printout and the other trays' indicators show the load met its parameters
    • C.The set is withheld and returned to the department with its load identification for the supervisor to investigate✓ Answer
    • D.The set is rewrapped in the operating room and run through an immediate-use cycle so that the case is not delayed

    If an internal indicator suggests inadequate processing the contents are not used, and the complete unused package with its load identification and the indicator goes back to the department so the supervisor can start the follow-up. One nonresponsive indicator is not by itself proof that the load is nonsterile: the decision about the rest of the load weighs the physical monitors, the other internal indicators and any process challenge device result, which is why it is not the individual user's call.

    Source: ANSI/AAMI ST79, Section 13.5.2 (interpretation and follow-up of chemical indicator results)Report a problem with this question

17. 17. A device manufacturer's instructions specify a wrapped steam cycle, while the container manufacturer validates a different cycle for that rigid container. How is the conflict resolved?

    • A.The device instructions always prevail, so the container is used with the device's cycle without asking
    • B.The two manufacturers are contacted, and the set waits until a method validated by both is identified✓ Answer
    • C.The longer of the two cycles is chosen, because added exposure time satisfies both sets of instructions
    • D.The department's own policy prevails, because the facility validates its cycles when equipment is installed

    A device may only be processed by a method its manufacturer has validated, and a container may only be used in the cycles its own manufacturer has validated, so a device and a packaging system that have no validated method in common cannot simply be combined. The department contacts both manufacturers and holds the item until a compatible, validated method is established; a longer cycle is not a validated cycle.

    Source: Device and container manufacturers' validated instructions for use; ANSI/AAMI ST79, device and packaging compatibility provisionsReport a problem with this question

18. 18. A loaner set arrives for tomorrow's case with no manufacturer's instructions for use in the container. What does the technician do?

    • A.Process it on the longest cycle available, because the longest cycle is safe for any instrument set
    • B.Process it on the cycle used for similar sets, since instruments of one type are reprocessed alike
    • C.Obtain the written instructions from the manufacturer or vendor and hold the set until they arrive✓ Answer
    • D.Send it unprocessed to the operating room so the vendor can set it up in the room before the case

    The manufacturer's validated written instructions are the governing authority for how a device is cleaned, assembled, packaged and sterilized, because only the manufacturer has tested that the method works for that design. Without them the department has no validated method, so the set is held and the instructions are obtained; guessing from similar instruments can damage the device or leave it unsterile.

    Source: Manufacturer's validated instructions for use; ANSI/AAMI ST79, loaner and reusable device reprocessing provisionsReport a problem with this question

19. 19. What is the sterile processing technician's documented role in handling a loaner instrument set?

    • A.Adding the set to the hospital's permanent inventory so that it can be issued to any future case
    • B.Accepting the vendor's word that the set was sterilized elsewhere and storing it as sterile stock
    • C.Delivering the set to the operating room unopened, since the vendor reprocesses its own instruments
    • D.Documenting receipt and inventory of the set, its load identification, and its condition on return✓ Answer

    Loaner instrumentation is tracked like any other reprocessed inventory, through a manual, computerized or hybrid system: receipt and count on arrival, decontamination and inspection, the load identification under which it was sterilized, and its condition and count when it goes back to the vendor. A set that arrives already packaged by a vendor is still decontaminated and sterilized by the facility that will use it.

    Source: HSPA CRCST content outline, Equipment Tracking and Documentation; ANSI/AAMI ST79, loaner instrumentation provisionsReport a problem with this question

20. 20. A technician about to issue a tray finds that the load record for that cycle has no operator initials and no entry for the process challenge device result. What is correct?

    • A.Hold the load and escalate to the supervisor, since the record cannot show release criteria were met✓ Answer
    • B.Issue the tray and fill in the missing entries from memory, since the printout shows no alarm at all
    • C.Issue the tray and have the operator initial the record later in the shift when the work slows down
    • D.Discard the whole load without review, because an incomplete record is a confirmed sterilization failure

    Release depends on documented evidence that the load met its criteria, and the operator's review and signature on the physical monitoring record is part of that evidence, as is the recorded indicator result. An incomplete record means the decision cannot be supported, so the load is held and the question goes to the supervisor rather than being settled by back-filling entries from memory.

    Source: ANSI/AAMI ST79, Section 13.6 (load release criteria and documentation)Report a problem with this question

21. 21. An operating room team repeatedly finds one particular set assembled with an instrument missing. How should that reach the sterile processing quality process?

    • A.Through documented reports that are trended and reviewed with the user department so the cause is fixed✓ Answer
    • B.Through a verbal word to whoever assembled the set, so that technician can be counseled about the error
    • C.Through the operating room's own correction of the count sheet, so the department is not troubled by it
    • D.Through removal of the set from the schedule until the vendor supplies a replacement instrument tray

    A quality process works only if defects found at the point of use come back as documented data that can be counted, trended and analyzed for a root cause, rather than as an informal complaint to one person. Risk communication in this model is an ongoing dialogue among sterile processing, the user departments and infection prevention, and the corrective action is verified by later audits.

    Source: ANSI/AAMI ST79, Section 14 (quality process improvement and risk communication)Report a problem with this question

22. 22. How long must a hospital retain its sterilization process monitoring records?

    • A.For the period set by facility policy, reflecting state, federal and accrediting agency requirements✓ Answer
    • B.For a uniform national period of three years, which AAMI sets for every hospital in the country
    • C.Until the next accreditation survey ends, after which the prior period's records are destroyed
    • D.For the service life of the sterilizer, after which all of its records may be discarded at once

    No national retention period exists for sterilization records. Each facility sets the period in its own policy, based on local, state, federal and accrediting agency requirements and on legal considerations such as the statute of limitations, because these records are legal documents that may be needed to show how a specific device was processed for a specific patient.

    Source: ANSI/AAMI ST79, Sections 12.7 and 13.3.4 (record retention per facility policy)Report a problem with this question

Practice questions based on the HSPA CRCST Certification Exam Content Outline, ANSI/AAMI ST79 sterility-assurance practice, and CDC/HICPAC disinfection and sterilization guidance. CRCST is a mark of the Healthcare Sterile Processing Association; this site is not affiliated with or endorsed by HSPA. Always follow the device manufacturer's written instructions for use, your facility's policies, and the current edition of the applicable standards. About the CRCST exam →