HSPA Sterile Processing (CRCST) — All Questions

What air pressure relationship should the decontamination area have compared with adjacent areas of the department?

• a.Positive pressure, so clean air is pushed toward the soiled workroom
• b.Negative pressure, so contaminated air does not flow into clean areas✓
• c.Alternating pressure controlled by the sterilizer cycle
• d.Equal pressure, so no air movement occurs between rooms

The decontamination room is held at negative pressure so airborne contaminants and aerosols generated during cleaning are drawn out and exhausted rather than escaping into preparation, packaging, or sterile storage. Positive pressure is used in the clean workroom and sterile storage. Equal or alternating pressure would allow uncontrolled migration of contaminated air.AAMI ST79

A facility engineer rebalancing the ventilation system asks the technician what governs the decontamination area's air exchange rate. What is the accurate answer?

• a.The rate is set by ANSI/ASHRAE/ASHE 170 in the edition in force for that system✓
• b.The rate is fixed at four air exchanges per hour in every reprocessing area
• c.The rate is chosen by the department based on how busy the workload is
• d.The rate is set permanently by AAMI ST79 and does not change between editions

AAMI ST79:2017 removed its own HVAC values and defers to ANSI/ASHRAE/ASHE 170 in the edition in force when the system was installed or last upgraded, so the governing number depends on that edition rather than on a figure memorized from an older text. The widely repeated 10 air changes per hour is pre-2017 AAMI legacy and is associated with the sterilizer equipment room, not decontamination. A fixed four per hour is the sterile-storage figure, not a universal reprocessing rate. The department cannot set it by workload — it is an engineered requirement verified by testing. And ST79 no longer fixes it permanently, which is exactly the change that makes the old memorized numbers unreliable. What does not move between editions is the pressure relationship: decontamination is kept negative to adjacent spaces, and clean workrooms and sterile storage positive.AAMI ST79 · ANSI/ASHRAE/ASHE 170

A facility engineer asks what temperature range the decontamination area should be maintained within. What is the correct answer?

• a.68 to 73 degrees F (20 to 23 degrees C)
• b.60 to 65 degrees F (16 to 18 degrees C)✓
• c.75 to 80 degrees F (24 to 27 degrees C)
• d.Any temperature that staff find comfortable in personal protective equipment

The decontamination area is kept cooler, roughly 60 to 65 degrees F, because staff work in full impervious personal protective equipment and the cooler air limits heat stress and microbial growth. The 68 to 73 degrees F range applies to the preparation and packaging area. Storage areas should not exceed about 75 degrees F, and comfort alone is not an acceptable engineering control.AAMI ST79

During a survey, an inspector reviews the department's daily environmental logs and asks what relative humidity range must be maintained in the work areas. What is correct?

• a.10 to 25 percent
• b.Humidity does not need to be monitored in decontamination
• c.65 to 80 percent
• d.30 to 60 percent✓

Relative humidity of roughly 30 to 60 percent limits microbial growth and static electricity while protecting packaging materials from moisture damage. Very low humidity dries out wrappers and generates static; humidity above 60 percent supports microbial proliferation and can cause packaging and stored items to absorb moisture. Humidity must be monitored and documented in all reprocessing areas, including decontamination.AAMI ST79

A new sterile processing department is being designed. Which statement describes correct workflow?

• a.Work flows in one direction only, from soiled receiving through decontamination to clean assembly, sterilization, and storage✓
• b.Staff may move freely between decontamination and assembly as long as gloves are changed
• c.Clean and soiled items may share a corridor as long as they travel at different times of day
• d.Sterilizer loading may occur from either the clean or the soiled side depending on staffing

Unidirectional flow with physical separation between soiled and clean areas is the fundamental design principle that prevents recontamination of processed items. Time separation on a shared corridor does not remove residual contamination or airborne risk. Moving between areas requires full removal of protective attire and hand hygiene, not just a glove change, and sterilizers are always loaded from the clean side.AAMI ST79

Which statement best describes the regulatory and standards landscape for sterile processing?

• a.Only state health departments set requirements for sterile processing departments
• b.Standards such as ANSI/AAMI ST79 are legally binding federal law in every state
• c.Only the Food and Drug Administration has any authority over reprocessing practices
• d.Multiple bodies apply: the FDA clears devices and their reprocessing instructions, OSHA regulates worker safety, CDC publishes guidelines, CMS and accrediting organizations survey practice, and ANSI/AAMI standards define recognized practice✓

Sterile processing sits at the intersection of device regulation, occupational safety law, public health guidance, accreditation, and voluntary consensus standards, and departments are held to all of them. ANSI/AAMI ST79 is a voluntary consensus standard rather than statute, but it is widely adopted as the standard of care and is cited by surveyors. Some states have added their own certification and staffing requirements, which supplement rather than replace federal and accreditation expectations.CDC

What temperature and humidity conditions are recommended for a sterile storage area?

• a.Temperature above 80 degrees F to keep packages thoroughly dry
• b.Temperature not exceeding about 75 degrees F (24 degrees C) and relative humidity not exceeding about 60 percent, with a minimum of 4 air exchanges per hour and positive pressure✓
• c.Temperature of 60 to 65 degrees F and 10 air exchanges per hour under negative pressure
• d.Any temperature, as long as humidity stays above 70 percent

Sterile storage is kept cool and dry under positive pressure with at least four air exchanges per hour so packaging is not degraded by heat or moisture and clean air flows outward. The 60 to 65 degrees F, 10 exchange, negative pressure profile describes the decontamination area. Humidity above 60 percent encourages microbial growth and can compromise packaging, and excessive heat damages wrappers and seals.AAMI ST79

A new instrument detergent is delivered to the department. Where does the technician find the chemical's hazards, personal protective equipment requirements, and first aid measures?

• a.On the shipping invoice from the distributor
• b.On the Safety Data Sheet, which the employer must keep readily accessible to employees during every shift✓
• c.In the device manufacturer instructions for use for the instruments
• d.In the sterilizer operator manual

The OSHA Hazard Communication standard requires a Safety Data Sheet for every hazardous chemical in the workplace, with standardized sections covering hazards, handling, exposure controls, first aid, and spill response, kept accessible to workers at all times. Containers must also be labeled with the product identifier and hazard information. Invoices, device instructions, and equipment manuals do not carry this required chemical hazard information.OSHA 29 CFR 1910.1200

Which workstation adjustment best applies ergonomic principles in the decontamination area?

• a.Encouraging technicians to lean over the sink to see instruments more clearly
• b.Requiring technicians to lift full instrument trays with the arms fully extended
• c.Setting sink height so the working level is at or slightly below the technician's elbow, with anti-fatigue mats and adjustable work surfaces✓
• d.Setting all sinks to a single fixed height so every station is identical

Ergonomic design matches the workstation to the worker, and a sink whose working level sits at or just below elbow height keeps shoulders and wrists in neutral positions during long cleaning tasks. Anti-fatigue mats and height-adjustable surfaces accommodate staff of different statures. Fixed heights, sustained forward leaning, and lifting with extended arms all increase the risk of cumulative musculoskeletal injury.OSHA

A consultant tells the department it must hold 10 air changes per hour in decontamination. Where do the air exchange requirements for that room actually come from?

• a.The sterilizer manufacturer's instructions for use for the equipment room air
• b.The OSHA general industry ventilation standard for health care support departments
• c.ANSI/ASHRAE/ASHE 170, in the edition in force when the system was last upgraded✓
• d.AAMI ST79, which publishes its own air change rate for each of the work areas

ST79 deleted its own HVAC numbers in the 2017 revision and now defers to ANSI/ASHRAE/ASHE 170, applied in the edition that was in force when the ventilation system was installed or last upgraded. Under ASHRAE the decontamination figure is 6 air changes per hour; the familiar 10 figure is pre-2017 AAMI legacy and belonged to the sterilizer equipment room, not to decontamination. That is why AAMI ST79 no longer publishes its own rates for each work area. OSHA regulates employee exposure and hazard communication, not room air change rates for processing areas. A sterilizer instruction manual governs the machine and its utilities, not the ventilation design of the room it sits in.ANSI/ASHRAE/ASHE 170

Which air pressure relationship applies to the preparation and packaging area and to sterile storage?

• a.Neutral, with pressure equalized against the surrounding corridors
• b.Positive relative to adjacent spaces, so air moves out of these rooms✓
• c.Negative relative to adjacent spaces, so airborne soil stays contained
• d.Positive by day and negative overnight when the rooms are unoccupied

Clean work areas are kept under positive pressure so filtered air moves out of them and unfiltered air from corridors and soiled spaces cannot drift in over open packaging or sterile stock. Negative pressure is correct for decontamination, where the goal is the opposite: hold contaminated air inside the room. A neutral or equalized relationship gives no directional control at all, so air moves with any door swing or corridor draft. Switching the relationship between day and night is not a recognized practice; the pressure differential is a designed feature of the ventilation system and is monitored continuously, not scheduled.ANSI/ASHRAE/ASHE 170

The wall gauge in the preparation and packaging area reads 78 degrees F. What is the recommended temperature range for that area?

• a.60 to 65 degrees F (16 to 18 degrees C)
• b.68 to 73 degrees F (20 to 23 degrees C)✓
• c.75 to 80 degrees F (24 to 27 degrees C)
• d.55 to 60 degrees F (13 to 16 degrees C)

Preparation and packaging, along with the sterilization work area, is maintained at roughly 68 to 73 degrees F, a range that is comfortable for staff wearing full attire and that keeps packaging materials stable. The 60 to 65 degrees F range belongs to decontamination, where heavier personal protective equipment is worn and cooler air is deliberate. A 75 to 80 degrees F range is above every published work area limit; even sterile storage is capped near 75 degrees F. A 55 to 60 degrees F range is colder than any published sterile processing figure and would cause condensation problems as well as staff discomfort. At 78 degrees the reading is out of range and requires corrective action.AAMI ST79

A technician is told the humidity log must stay between 30 and 60 percent, but the facility's newer design documents list a lower floor. What is accurate?

• a.ASHRAE 170 lowered the floor to 20 percent; 60 percent remains the ceiling✓
• b.Humidity limits apply to sterile storage only, not to the other work areas
• c.The floor was raised to 35 percent and the ceiling lowered to 55 percent
• d.OSHA fixes a 30 to 60 percent range for every health care work area

The older AAMI text carried a 30 to 60 percent range, but ANSI/ASHRAE/ASHE 170 lowered the acceptable floor to 20 percent while leaving the upper limit at 60 percent, so a facility designed to the newer document may legitimately log readings in the twenties. Nothing raised the floor to 35 percent or pulled the ceiling down to 55 percent. Humidity is controlled in every processing area, not just storage: excessive moisture affects packaging, wrappers and stored packages alike. OSHA does not publish a numeric humidity range for health care work areas; its role is worker safety, and the applicable numbers come from the ventilation standard the facility was built or upgraded to.ANSI/ASHRAE/ASHE 170

The morning relative humidity reading in the preparation and packaging area is 64 percent. What should the technician do?

• a.Record the reading and report it through the established procedure to engineering✓
• b.Rewrap the trays assembled that morning once the reading has come back into range
• c.Tell the supervisor at week's end, since environmental logs are a management duty
• d.Leave the log blank until the reading returns to range so the record stays clean

An out-of-range reading is exactly what the log exists to capture. The technician documents the actual value and triggers the department's written corrective action pathway so facilities engineering can bring the system back into range, and the excursion, its duration and its resolution become part of the record. Leaving the log blank falsifies the record and destroys the trail an investigator or surveyor would follow. Holding the report until the end of the week lets a correctable problem run for days and is not what the procedure asks of the person taking the reading. Rewrapping the morning's trays is a reaction with no basis: a brief humidity excursion in an assembly area does not by itself compromise packages that are not yet sterilized, and the decision about affected product is made through the corrective action process.AAMI ST79

Sterile storage humidity has logged above 70 percent for three straight days. What must happen to the stock held in that room?

• a.Nothing, because event-related sterility ignores the conditions in the room
• b.Move the packages to lower shelves and keep issuing them in date order
• c.Notify the supervisor and infection prevention so the stock is evaluated✓
• d.Reprocess every package in the room before the humidity has been corrected

A sustained excursion well above the 60 percent ceiling puts every package in the room in question, and deciding what happens to that inventory is not a call the technician makes alone. Reporting it so the supervisor and infection prevention can assess the stock, document the event and decide on reprocessing is the defined corrective action. Event-related sterility does not mean conditions are irrelevant: sustained high humidity is precisely the kind of event that can compromise a barrier. Shifting packages to lower shelves changes nothing about the moisture in the room and continues to issue suspect stock. Reprocessing everything before the humidity problem is fixed wastes the work, because the reprocessed packages return to the same out-of-range room.AAMI ST79

How often should the floors in the decontamination area be cleaned?

• a.Weekly, as part of the department's scheduled terminal cleaning routine
• b.After each case cart is unloaded, before the next cart is brought in
• c.Monthly, unless a chemical or fluid spill happens during a work shift
• d.At least daily, and again whenever they are visibly soiled or splashed✓

Decontamination floors are cleaned at least once every day the area is used, and immediately whenever a splash, spill or visible soil occurs, because the floor collects aerosolized fluid and dropped debris throughout the shift. Weekly cleaning leaves contamination in place for days and confuses terminal cleaning, which in sterile processing is itself a daily task rather than a weekly one. Monthly cleaning is far outside any published expectation for a room where blood and body fluids are handled. Cleaning after every unloaded cart sounds rigorous but is not the standard and is unworkable in a busy department; what matters is a scheduled daily clean plus prompt attention to spills.AAMI ST79

Why are horizontal surfaces and light fixtures in the clean assembly area damp dusted rather than dry dusted?

• a.Damp dusting is needed so the disinfectant can reach a 10 minute wet contact
• b.Damp dusting removes the water-soluble film that dry cloths leave behind
• c.Dry dusting throws lint and particles into air that settles on open packaging✓
• d.Dry dusting leaves a static charge that pulls bacteria onto packaging material

A dry cloth lifts dust and lint into the air, where it drifts and settles onto instruments, open wrappers and count sheets on the assembly tables. A damp cloth traps the particles instead of launching them, which is why damp dusting is done at the start of the day before any set is assembled. The static charge explanation is invented; the problem is airborne particulate, not electrostatic attraction of bacteria. No routine surface disinfectant in this setting requires a 10 minute wet contact time, and contact time is set by the product label rather than by the dusting method. Dry cloths do not deposit a water-soluble film; the residue concern runs the other way, from over-application of chemicals.AAMI ST79

What does terminal cleaning of a sterile processing work area involve?

• a.A daily thorough cleaning of floors, sinks, equipment exteriors and surfaces✓
• b.A cleaning of the sterilizer chamber and drain done after every failed load
• c.The wipe-down performed after each contaminated case cart has been unloaded
• d.A quarterly deep cleaning done by an outside environmental services vendor

Terminal cleaning in sterile processing is the thorough end-of-day clean of the whole work area, covering floors, sinks, counters, equipment exteriors, handles, doors and waste receptacles, and it is performed every day the area is used. Treating it as a quarterly contracted deep clean confuses it with periodic project cleaning of walls, vents and ceilings. The quick wipe-down after unloading a soiled cart is routine between-task cleaning, not terminal cleaning. Cleaning a sterilizer chamber and drain is scheduled equipment maintenance driven by the sterilizer instructions, and it is done on a routine schedule rather than only after a failure.AAMI ST79

A department is writing the cleaning schedule for its sterile storage shelving. Which practice is correct?

• a.Spray disinfectant onto the loaded shelves and let the packages dry in place
• b.Wipe shelving with alcohol and return the supplies while the shelf is wet
• c.Clean shelving only when a package on it is found damaged or contaminated
• d.Clean shelves on a schedule, removing supplies first and letting them dry✓

Storage shelving is cleaned on a defined routine schedule; supplies come off the shelf first, the shelf is cleaned and allowed to dry completely, and only then is the stock returned, so packages are never wetted and no moisture is trapped underneath them. Spraying a loaded shelf soaks the wrappers and pouches sitting on it, and a wet package is a contaminated package. Waiting until damage is discovered means dust and particulate accumulate for months in the room that holds sterile product. Returning stock to a still-wet shelf reintroduces the same moisture problem, and alcohol is a poor general surface cleaner because it evaporates before it can do much and does not remove soil.AAMI ST79

Which practice keeps cleaning equipment from carrying contamination between work areas?

• a.Dedicate mops, buckets and cloths to decontamination and keep them there✓
• b.Use one mop bucket for the whole department and change the solution weekly
• c.Clean the decontamination floor first, then carry the mop to the clean side
• d.Rinse the decontamination mop head in the assembly area sink between uses

Cleaning tools used in decontamination stay in decontamination. Dedicated, clearly identified mops, buckets, brushes and cloths mean the soil picked up in the dirty side is never carried across the barrier into assembly, sterilization or storage. Sharing one bucket across the whole department is the exact failure this rule prevents, and a weekly solution change leaves heavily loaded solution in service for days. Cleaning the dirty area first and then moving the same tool to the clean side reverses the correct direction of work, which runs clean to dirty for shared equipment and never dirty to clean. Rinsing a contaminated mop head in a clean area sink contaminates the sink and the room around it.AAMI ST79

An expired container of high-level disinfectant must be discarded. How is the disposal method determined?

• a.By emptying it into a sharps container, which the facility incinerates
• b.By placing the sealed container in the regulated medical waste red bag
• c.By pouring it down the utility sink with the water running to dilute it
• d.By the safety data sheet together with state and local disposal regulations✓

Disposal of a chemical is set by the product's safety data sheet, which carries the disposal considerations section, read together with the state and local rules governing what may enter the sanitary sewer or the hazardous waste stream. Some products may be drain disposed after neutralization and some may not, so pouring it down a utility sink on the assumption that dilution is sufficient can violate the discharge permit. Red bag waste is for material contaminated with blood or other potentially infectious material; a chemical container is a different waste stream. A sharps container is for sharp objects only, and adding liquid chemical to it creates a spill and inhalation hazard for whoever handles the container.AAMI ST58

A new enzymatic detergent arrives and a technician needs to know which gloves and eye protection to wear with it. Where is that stated?

• a.In the chemical inventory list posted beside the eyewash station
• b.In the exposure controls and protection section of the safety data sheet✓
• c.Ask the supervisor, who assigns personal protective equipment for each chemical
• d.On the shipping manifest that came with the case of detergent from the vendor

Every safety data sheet carries a standard set of numbered sections, and the exposure controls and personal protection section is where the manufacturer states the glove material, eye and face protection, respiratory protection and engineering controls needed for that specific product. The employer must keep those sheets readily accessible on every shift, so the information is available to the technician without waiting on anyone. A shipping manifest lists quantities and catalog numbers and carries no hazard information. Asking someone else to state the protective equipment is a way of avoiding a document written for exactly this purpose, and it produces no record. A chemical inventory list names what is stocked; it is not a hazard document.OSHA 29 CFR 1910.1200

A gallon container of high-level disinfectant breaks on the decontamination floor and vapor is noticeable. What comes first?

• a.Evacuate and restrict the area, then follow the spill plan in the safety data sheet✓
• b.Mop the spill toward the floor drain and flush it with large amounts of cold water
• c.Pour a neutralizing agent on the spill and ventilate the room by propping the door
• d.Cover the spill with absorbent pads and finish the sets that are already in process

With a large spill of a vapor-producing chemical the first move is to get people out and keep them out, because inhalation exposure begins immediately. The accidental release measures section of the safety data sheet then drives the response, including the protective equipment, absorbent and neutralizer to use and whether the facility's hazardous materials team must be called. Mopping toward the drain spreads the chemical, exposes the person mopping and may violate the facility's discharge rules. Continuing to process sets keeps staff in a room with a rising vapor concentration. Propping the door pushes contaminated air into adjacent areas and defeats the room's designed negative pressure, and neutralizing should only follow the written procedure and proper protection.OSHA 29 CFR 1910.1200

During the weekly activation of the eyewash station the water runs rusty and the flow is weak. What should the technician do?

• a.Flush the unit until the water runs clear and record the weekly check as a pass
• b.Document the check, report the defect to the supervisor, and have it repaired✓
• c.Use the hand sink as the emergency eyewash until the station is serviced
• d.Skip the check next week, since a weekly activation has already been performed

The weekly activation exists to find exactly this kind of fault, and a rusty, low-flow unit has failed the check. The technician records what was actually observed and reports the defect so it is repaired and, if needed, an alternate arrangement is put in place; a station that cannot deliver the required flow is not available for an emergency. Flushing until the water clears and recording a pass hides a real defect and falsifies the record. Skipping next week's activation on the grounds that one was already done abandons the weekly requirement that keeps the line from stagnating. A hand sink is not an eyewash: it cannot deliver tepid, hands-free flow to both eyes for the required time.OSHA 29 CFR 1910.151

How long must the eyes be flushed at an emergency eyewash station after a chemical splash?

• a.Until the safety data sheet has been located and its first aid section read
• b.At least 5 minutes, or until the burning sensation in the eye has stopped
• c.At least 15 minutes, holding the eyelids open, then seek medical evaluation✓
• d.About 30 seconds, then cover the eye and walk to the employee health office

The accepted flush is a continuous 15 minutes with the eyelids held open so the water reaches the whole surface of the eye, followed by medical evaluation; the eyewash must be within about a ten second unobstructed walk of the hazard and must run hands-free so both eyes can be held open. Stopping at 5 minutes, or when the burning eases, leaves chemical in contact with the cornea, and pain is an unreliable endpoint because some agents anesthetize the surface. Half a minute is nowhere near enough to dilute and remove a chemical splash. Retrieving and reading the safety data sheet before flushing wastes the seconds that matter most; someone else can look up the product while the flush is underway.OSHA 29 CFR 1910.151

Why must hands be washed after gloves are removed, even when the gloves were intact?

• a.Glove powder neutralizes the disinfectant used on decontamination surfaces
• b.Hand washing after glove removal is needed only when the gloves were torn
• c.An alcohol rub replaces washing because the gloves keep the hands soil-free
• d.Gloves can have unseen defects, and moist hands support microbial growth✓

Gloves are a barrier, not a seal. Pinholes and small tears that cannot be seen are common, contamination transfers to the hands during removal, and the warm moist environment inside a glove lets resident organisms multiply, so hand hygiene after doffing is required every time. Restricting hand washing to occasions when a tear was noticed misses every defect that was not visible. The powder explanation is invented and, in any case, powdered gloves have largely been removed from health care. An alcohol rub is a useful adjunct but does not substitute here: hands in decontamination are likely to carry visible soil and protein residue, and visibly soiled hands must be washed with soap and running water.CDC

A technician wants to wear scrubs laundered at home into the decontamination area. What applies?

• a.Home laundering is acceptable when the scrubs are washed hot and bleached
• b.Home laundered scrubs are acceptable if cover apparel is worn over them at work
• c.Personal scrubs are acceptable if they are changed after each soiled cart
• d.Attire worn in the work areas should be facility laundered and changed daily✓

Surgical attire worn in sterile processing work areas should be supplied and laundered by the facility or by an accredited laundry and put on fresh each day at work, because home washing machines cannot be validated or monitored and the soiled attire would travel home with the employee. Home washing with hot water and bleach still cannot be verified, and many home machines never reach the required temperature. Cover apparel is worn to protect clean attire when leaving the department, and it does not turn home-laundered clothing into acceptable work attire. Changing personal scrubs after each soiled cart addresses gross contamination but leaves the laundering problem untouched.AAMI ST79

A technician with a full beard is assigned to preparation and packaging. What head covering applies to him?

• a.Head hair, ears, sideburns and facial hair are covered before entering✓
• b.A bouffant cap alone is enough, since facial hair sheds very little skin
• c.A surgical mask worn over the beard takes the place of a head covering
• d.Head covering is required in decontamination only, where splashing occurs

Hair and the skin scale it carries are a source of particulate that can settle on instruments and open packaging, so all head and facial hair, including sideburns and the nape of the neck, is covered before entering any processing area. A bouffant cap alone leaves the beard exposed, and beards shed heavily; a hood-style cover is used instead. Restricting head covering to decontamination misunderstands the reason for it: in decontamination it also protects the worker from splash, but in assembly it protects the product. A surgical mask is worn for splash and droplet protection and does not contain hair the way a designed hood or beard cover does.AAMI ST79

A technician returns from vacation wearing gel nail extensions. What applies to her?

• a.Extensions are acceptable if fresh polish is applied at least every four days
• b.Extensions are acceptable in assembly because gloves are worn for handling
• c.Consult the supervisor about whether the extensions may be worn this week
• d.Artificial nails are prohibited, and natural nails stay short and unpolished✓

Artificial nails, extensions, wraps and gel overlays are prohibited for personnel who handle instruments or sterile supplies, because higher microbial counts are recovered from them, they resist hand hygiene, and they tear gloves. Natural nails are kept short, smooth and free of chipped polish. Wearing gloves does not solve the problem, since organisms survive under the nail and gloves fail more often against a rigid extension. This is a written standard the technician simply follows, so treating it as a question for management is a way of avoiding a rule that is already settled. The four-day polish rule is a misremembered version of guidance about chipped polish and does not make an extension acceptable.CDC

What do dress code standards say about jewelry in sterile processing work areas?

• a.Jewelry may be worn in assembly but comes off in the decontamination area
• b.A plain band ring may be worn when the technician double gloves that hand
• c.Necklaces and earrings are acceptable while they stay covered by attire
• d.Rings, bracelets and watches come off, because they harbor microorganisms✓

Hand and wrist jewelry is removed before entering the work areas. Rings, bracelets and watches trap moisture and organic soil, interfere with hand hygiene, tear gloves, and can scratch or be dropped into an instrument set. Double gloving does not fix the contamination held under a band or the increased risk of a glove tear. Removing jewelry only for decontamination misses the assembly side, where a dropped stone or a loose earring can end up inside a tray that is then sterilized and opened on a sterile field. Necklaces and dangling earrings under attire are still a foreign-object and contamination risk and are not made acceptable by being covered.AAMI ST79

When are shoe covers indicated for a sterile processing technician?

• a.When gross contamination or splashing of the shoes can be anticipated✓
• b.On entry to sterile storage, to keep floor soil off sterile packages
• c.Only while transporting case carts through the surgical suite corridor
• d.On every entry to the department, as a routine part of daily attire

Shoe covers are personal protective equipment worn when splashing or gross contamination of the shoes is expected, which in practice means the decontamination area, and they are removed with the rest of the protective equipment before leaving that area. Wearing them routinely on every entry adds cost and creates a contamination risk, since covers picked up in one area are then walked into another. Limiting them to surgical suite transport confuses sterile processing attire with the surgical suite's own rules. Wearing them into sterile storage does not protect packages, which are stored well off the floor; it is contact with wet or soiled floors that drives the requirement.AAMI ST79

A hospital volunteer asks to cut through the decontamination area to reach the staff elevator. What is correct?

• a.She may pass through as long as she stays on the marked path and touches nothing
• b.She may pass through once she has put on a bouffant cap and shoe covers
• c.Access is fine because a through-walkway counts as an unrestricted zone
• d.Access is limited to trained staff in proper attire, so the request is refused✓

Decontamination is a restricted area. Entry is limited to personnel who have been trained in the hazards, are covered by the exposure control plan, and are wearing the required protective equipment, so a volunteer walking through to reach an elevator is turned away and directed to another route. Staying on a marked path does not change the fact that she is unprotected in a room where blood-borne pathogens and chemicals are aerosolized. Adding a cap and shoe covers does not supply the gown, gloves and face protection required there, nor the training. Calling a walkway unrestricted misstates the classification: the office and receiving corridor are unrestricted, and the processing areas are restricted.AAMI ST79

How are sterile processing work areas classified for traffic control purposes?

• a.Unrestricted areas such as the office, and restricted processing areas✓
• b.Public, staff and sterile, with attire adding a layer at each step
• c.Unrestricted, semi-restricted and restricted, as in the surgical suite
• d.Clean and dirty, with the sterilizer access aisle treated as neutral

Sterile processing works with two classifications: unrestricted areas, such as the department office, break room and soiled receiving corridor, where street clothes are acceptable, and restricted areas, which include decontamination, preparation and packaging, sterilization and sterile storage, and which require full attire and controlled entry. The three-tier unrestricted, semi-restricted and restricted scheme is the surgical suite's language and is not applied to the processing department. A simple clean and dirty split describes workflow but sets no attire or entry rules and invents a neutral aisle that does not exist. Public, staff and sterile is not a recognized classification anywhere in the standards.AAMI ST79

A vendor representative arrives with a loaner tray and wants to walk into the assembly area to inspect it. What should the technician do?

• a.Refuse the tray outright, because vendors cannot bring instruments on site
• b.Escort him in, since the loaner tray remains the vendor's responsibility
• c.Ask the supervisor to check the representative in under the vendor policy✓
• d.Allow entry once he has put on a bouffant cap, a mask and a cover gown

Vendor access is a credentialing matter, not a floor decision. Facilities require representatives to be registered, screened for immunization and training, badged and signed in before entering restricted areas, and confirming that status is beyond what a technician can verify at the door, so the request goes to the person who administers the policy. Escorting him in on the theory that the tray belongs to him bypasses that entire process. Handing him attire addresses appearance only and leaves the credentialing question unanswered. Refusing the loaner tray outright is wrong in the other direction: loaner instrumentation is routine, and the tray is received, documented and reprocessed to the manufacturer's instructions before use.AAMI ST79

A technician must move a heavy case of wrapped basin sets from the floor onto a cart. Which technique is correct?

• a.Lift with the arms extended so the load clears the knees on the way up
• b.Keep the legs straight, bend at the waist, and lift in one smooth pull
• c.Bend the knees, hold the load close, and lift using the leg muscles✓
• d.Twist at the waist toward the cart while holding the load out in front

Safe lifting means getting close to the load, setting the feet apart for a stable base, bending at the knees and hips rather than the spine, keeping the load close to the body, and driving up with the large muscles of the legs while the back stays straight. Bending at the waist with straight legs loads the lumbar discs at their weakest and is the classic mechanism for a back injury. Twisting under load combines rotation with compression and is a common cause of disc injury, so the feet are repositioned instead. Holding the load out at arm's length multiplies the effective weight on the spine, which is the opposite of keeping it close.AAMI ST79

Which measure best reduces repetitive motion injury for a technician who assembles trays for an entire shift?

• a.Work faster so that fewer total hours are spent at the assembly station
• b.Rotate tasks through the shift and take short stretch breaks between sets✓
• c.Raise the workstation so the elbows stay above shoulder height when working
• d.Wear compression gloves so the wrists stay supported for the whole shift

Repetitive strain comes from doing the same motion, in the same posture, for long uninterrupted stretches, so the effective controls are task rotation, micro-breaks and stretching, together with an adjustable work surface and a sit-stand option. Working faster increases the number of repetitions per minute and makes the exposure worse, not better. Compression gloves may ease symptoms for some people but do nothing about the underlying repetition and can encourage working through pain. Raising the work surface so the elbows sit above shoulder height forces sustained shoulder elevation, which is itself a recognized risk; the working height should put the hands at or slightly below elbow level.AAMI ST79

Which body clears a reusable medical device for market and reviews the reprocessing instructions that ship with it?

• a.The Occupational Safety and Health Administration, by inspection
• b.The Centers for Medicare and Medicaid Services, through its surveys
• c.The Association for the Advancement of Medical Instrumentation
• d.The Food and Drug Administration, which regulates medical devices✓

The Food and Drug Administration regulates medical devices, and part of clearing a reusable device is reviewing the validated cleaning, disinfection and sterilization instructions the manufacturer supplies with it. That is why the instructions for use are treated as binding in the department. The Centers for Medicare and Medicaid Services set the conditions hospitals must meet to be reimbursed and survey against them, but they do not evaluate devices. The Association for the Advancement of Medical Instrumentation writes voluntary consensus standards through committees and has no clearance authority. The Occupational Safety and Health Administration regulates the safety of the worker handling the device, not the device itself.FDA

A hospital is told its Medicare participation is at risk after a survey finds reprocessing deficiencies. Which body is acting?

• a.The FDA, which sets conditions of participation for device end users
• b.CMS, which sets the conditions of participation tied to reimbursement✓
• c.AAMI, which withdraws recognition of the facility's standards status
• d.The CDC, which issues citations when its guidelines are not followed

The Centers for Medicare and Medicaid Services publish the conditions of participation that a facility must satisfy to bill Medicare and Medicaid, and infection control and device reprocessing findings are surveyed against them, so the financial consequence of a deficiency runs through this agency. The Food and Drug Administration regulates the devices and their labeling and does not write conditions of participation. The Association for the Advancement of Medical Instrumentation publishes standards; it does not accredit or certify facilities and has nothing to withdraw. The Centers for Disease Control and Prevention publish guidelines and surveillance data but hold no citation authority; their recommendations gain force when a regulator or accreditor adopts them.CMS

What is the practical difference between an OSHA standard and a CDC guideline?

• a.Both are enforceable, but OSHA rules apply only inside hospital buildings
• b.The OSHA standard is enforceable law; the CDC guideline is a recommendation✓
• c.Neither binds a facility until the facility adopts it into its own policy
• d.The CDC guideline is enforceable law; the OSHA standard is a recommendation

An OSHA standard is a federal regulation published in the Code of Federal Regulations; inspectors can cite a facility and levy penalties for failing to meet it, as with the bloodborne pathogens standard. A CDC document is a guideline, built on evidence and expert consensus, that carries no penalty of its own, although accreditors and regulators frequently adopt it as the measure of acceptable practice. Reversing the two inverts the entire regulatory picture. OSHA's reach is not limited to hospital buildings; it covers covered employers wherever the work is done. And a regulation binds regardless of whether the facility has written it into policy, which is what makes it different from a guideline or a voluntary standard.OSHA 29 CFR 1910.1030

How is a document such as ANSI/AAMI ST79 best described?

• a.A voluntary consensus standard that regulators and accreditors may cite✓
• b.An internal hospital policy drafted by the infection prevention committee
• c.A federal regulation carrying civil penalties when a facility departs
• d.A device manufacturer instruction set that overrides written facility policy

ST79 is a voluntary consensus standard developed through a committee process and approved by the American National Standards Institute. It is not law in itself, but accrediting organizations and surveyors routinely cite it as the recognized standard of practice, and departing from it without justification is difficult to defend. It is not a federal regulation and carries no civil penalty of its own; that description belongs to an OSHA standard. It is not a manufacturer's instruction set, although it repeatedly directs the user back to the device instructions for use. And it is written by a national committee of industry, clinical and regulatory representatives, not by any one hospital's committee.AAMI ST79

Which organization publishes the guidelines for perioperative nursing practice?

• a.AAMI, the Association for the Advancement of Medical Instrumentation
• b.HSPA, the Healthcare Sterile Processing Association
• c.AORN, the Association of periOperative Registered Nurses✓
• d.AHRQ, the Agency for Healthcare Research and Quality

The Association of periOperative Registered Nurses publishes the guidelines for perioperative practice, which cover surgical attire, traffic patterns in the surgical suite, and the handling of instruments at the point of use, and which sterile processing frequently works alongside. The Association for the Advancement of Medical Instrumentation publishes the consensus standards for sterilization and reprocessing, including ST79 and ST91. The Healthcare Sterile Processing Association is the professional society for central service personnel; it certifies technicians and publishes education, not perioperative nursing guidelines. The Agency for Healthcare Research and Quality funds and publishes health services research and does not write practice guidelines for the operating room.AORN

A survey team from The Joint Commission tours the department. What authority do they carry?

• a.They accredit the facility, and CMS accepts that accreditation for participation✓
• b.They license individual sterile processing technicians in the states they survey
• c.They approve the chemical sterilants a department is permitted to purchase
• d.They write the federal regulations that govern device reprocessing in hospitals

The Joint Commission is an accrediting organization. Its standards are not law, but the Centers for Medicare and Medicaid Services grant it deeming authority, so its accreditation is accepted in place of a direct government survey, which gives its findings real financial weight. It does not write federal regulations; that is done by agencies such as OSHA and the FDA through rulemaking. It does not license individuals, since technician licensure or registration is a matter of state law and exists in only a few states. And it does not approve chemical sterilants, which are cleared by the FDA as devices or registered by the EPA as pesticides depending on how they are used.CMS

Which agency registers the disinfectant a department uses on its environmental surfaces?

• a.The Food and Drug Administration, which registers surface disinfectants
• b.The Centers for Disease Control and Prevention, through its guidelines
• c.The Environmental Protection Agency, which registers surface disinfectants✓
• d.The Occupational Safety and Health Administration, through its own standards

Disinfectants used on environmental surfaces such as counters, carts and floors are pesticides under federal law and are registered by the Environmental Protection Agency, which is why every such product carries an EPA registration number and label claims that are legally binding directions. The Food and Drug Administration takes over when the chemical is a liquid chemical sterilant or high-level disinfectant used on a medical device, which is a different regulatory path with different labeling. The Occupational Safety and Health Administration governs how the worker is protected while using the product, not whether the product may be sold. The Centers for Disease Control and Prevention recommend how and when to disinfect but register nothing.EPA

Contaminated instruments are shipped by truck to an off-site reprocessing center. Whose rules govern that shipment?

• a.The Environmental Protection Agency, which regulates medical waste incineration
• b.The Centers for Medicare and Medicaid Services, through conditions of coverage
• c.The Department of Transportation, which regulates hazardous material in transit✓
• d.The Food and Drug Administration, which regulates devices in interstate commerce

Once contaminated items leave the building on a public road, the Department of Transportation's hazardous materials rules apply, governing packaging, marking, labeling and shipping papers for infectious substances and regulated medical waste. The Food and Drug Administration regulates the devices themselves and their reprocessing instructions, but not how a truck is loaded and placarded. The Environmental Protection Agency regulates disposal and incineration of waste and the registration of disinfectants, which is a different question from transporting instruments intended for reuse. The Centers for Medicare and Medicaid Services set conditions of participation for facilities and have no role in transport rules.DOT 49 CFR

A state health department rule on instrument reprocessing is stricter than the national standard. Which one governs?

• a.The national standard, because federal recognition supersedes a state agency rule
• b.Either one, since the facility may adopt whichever requirement it prefers
• c.The state rule, because the facility must meet the more stringent requirement✓
• d.Neither, since accreditation survey findings replace both sets of rules

When several requirements apply to the same practice, the facility must satisfy all of them, which in practice means following the most stringent. A state rule that goes beyond the national consensus standard is enforceable in that state, so the department writes its policy to the state requirement. The claim that a national standard supersedes state law is backwards: a voluntary consensus standard has no power to displace a state regulation, and federal law generally sets a floor rather than a ceiling in this area. Picking whichever requirement is preferred would leave the facility out of compliance with the other. Accreditation does not replace state or federal requirements; accreditors expect facilities to meet them.HSPA CRCST Content Outline

How long must the department keep its sterilization load records?

• a.For the shelf life printed on the wrapper of the longest-dated item
• b.For one year from the date the load in question was processed
• c.For seven years, a period the FDA fixes for every device user
• d.For the period set by facility policy and by applicable state law✓

There is no single national retention period for sterilization records. The retention time is established by the facility's own written policy, informed by applicable state law, the statute of limitations for claims in that state, and accreditation requirements, so the correct instruction is to follow the policy that applies where the department operates. A flat one-year period is shorter than most facilities use and would defeat a late recall or claim. Wrapper shelf life is irrelevant, both because most facilities practice event-related sterility and because the record must survive far longer than the package. The FDA does not impose a seven-year retention period on device users; retention rules for users come from state law and facility policy.AAMI ST79

Why must archived processing records stay retrievable rather than merely stored?

• a.Retrieval time is what sets how long the records have to be retained
• b.A recall requires pulling every load record back to the last negative test✓
• c.Auditors require records to be stored in the area where they were created
• d.The operator must re-sign each record for every year it stays in storage

Records exist to be used. When a sterilizer fails a biological indicator, when a device is recalled, or when a patient infection is investigated, the department must identify every item processed in the affected cycles and trace where each one went, and that is possible only if the records can be located and read quickly, whether they are on paper or in a tracking system. Storing records in the area where they were made is a convenience, not a requirement, and off-site archiving is common. Re-signing a stored record annually is not a practice anywhere and would undermine the integrity of the original entry. Retrieval speed does not determine the retention period, which is set by policy and state law.AAMI ST79

A claim is filed years after a surgery and the load record for that day is subpoenaed. What does this illustrate?

• a.The processing record is a legal document and can be entered as evidence✓
• b.Only the operating room record, not the processing record, is discoverable
• c.Records may be reconstructed from memory when the original is missing
• d.A record older than the tray's shelf life carries no legal weight at all

Sterilization and processing records are part of the permanent record of care and can be subpoenaed and entered as evidence, which is a large part of why retention periods are long, entries are made at the time of processing, and each load record carries the operator's identification. Reconstructing a missing record from memory is falsification and destroys the credibility of every other record in the file. Shelf life describes when a package may be used and says nothing about the legal standing of a document. Discovery is not limited to the operating room record; anything relevant to how the instruments were processed, including cycle printouts, indicator results and cleaning verification logs, can be requested.AAMI ST79

A technician cuts a hand on a sharp instrument in the decontamination area. Beyond first aid, what does the event require?

• a.Complete an incident report only if the cut needs stitches or lost time
• b.Enter it on the load record for the set being processed at that moment
• c.Note it in the shift communication book so the next shift is made aware
• d.Report it to the supervisor and complete an incident report the same day✓

A sharps injury in decontamination is an occupational exposure incident. It is reported immediately so the exposure evaluation, source testing where permitted, post-exposure prophylaxis and confidential medical follow-up can begin within the window when they are effective, and the incident report and sharps injury log are completed the same day. Adding the injury to a load record confuses a product record with a personnel record and puts employee health information in the wrong file. Waiting to see whether stitches or lost time result misreads the requirement, which is triggered by the exposure itself and not by the severity of the wound. A communication book is informal, is not confidential, and is not a reportable record.OSHA 29 CFR 1910.1030

What does an orientation record for a newly hired technician document?

• a.That policies, safety practices and job duties were reviewed with the hire✓
• b.That the annual performance evaluation was completed on its due date
• c.That the technician has passed a national certification examination for the role
• d.That the technician met the continuing education requirement this year

The orientation record captures what a new employee was taught at the start of employment: department policies and procedures, safety and hazard communication, the exposure control plan, emergency procedures, the physical layout, and the specific duties of the position, signed and dated by both the employee and the person who provided it. It is separate from certification, which is documented by the credentialing body's own record. It is also separate from the annual performance evaluation, which measures how the employee performs after orientation is long finished. And it is distinct from the continuing education record, which accumulates contact hours over a career to maintain a credential.HSPA CRCST Content Outline

What distinguishes a competency record from a continuing education record?

• a.Competency is required yearly, and education records only at the time of hire
• b.Competency shows the person was observed performing the task correctly✓
• c.Competency records the contact hours earned at an outside conference
• d.Competency records belong to the technician, education to the facility

A competency record documents that a specific person was directly observed performing a specific task to a defined standard, such as operating the washer-disinfector or assembling a particular tray, and it is signed by the person who observed the performance. Contact hours earned at a conference belong on the continuing education record; attending a class shows exposure to information, not demonstrated skill. Both types of record are maintained by the employer in the personnel or education file, even though the technician also keeps copies for recertification. Competency is verified at hire, when a new process or piece of equipment is introduced, and on the schedule policy sets, while education accrues continuously rather than only at hire.AAMI ST79

Which quality test results belong in the department's permanent record set?

• a.Cleaning verification, biological and air removal results, plus load records✓
• b.The biological indicator results alone, since they are the definitive test
• c.Only the results that failed, because passing results need no follow-up
• d.Only the cycle printouts, because indicator strips fade and cannot be archived

The permanent record covers the whole process: cleaning verification testing of washers and ultrasonic units, daily air removal testing of dynamic-air-removal sterilizers, biological indicator results with their controls, chemical indicator and integrator results, and the load records that tie contents, cycle parameters and operator to each cycle. Keeping biological results alone leaves a recall unable to show that the load was properly cleaned or that air removal was verified. Keeping only failures destroys the baseline that makes a failure interpretable and hides trends. Cycle printouts are essential but incomplete on their own, and fading indicator strips are handled by policy on storage and by recording the result, not by discarding the record.AAMI ST79

A monthly audit finds operator initials missing from 30 percent of load records. What is the technician's part in correcting this?

• a.Go back through the month and add initials to the records left blank
• b.Ask the supervisor whether initialing the load records is still a requirement
• c.List the missing initials on a separate sheet filed with the monthly report
• d.Initial each load record at the time of processing, as the procedure requires✓

Operator identification on the load record is what makes a cycle traceable to a person, and the existing procedure already requires it, so the fix is for each technician to complete the entry at the time of processing rather than treating it as an open question. Asking whether the requirement still stands is a way of avoiding a duty that is already written down and documented in competency records. Going back and initialing records after the fact is retroactive documentation: the person cannot honestly attest to a cycle that may have been run days ago by someone else. Listing the gaps on a separate sheet measures the problem again without fixing it and leaves the original records incomplete.AAMI ST79

How do quality assurance and quality control differ in a sterile processing department?

• a.Assurance covers instruments, and control covers staffing and productivity
• b.Control builds and monitors the process; assurance checks the finished product
• c.Assurance builds and monitors the process; control checks the finished product✓
• d.Assurance is done in house, and control is done by an outside surveyor only

Quality assurance is proactive and process-oriented: written procedures, competency verification, preventive maintenance, monitoring and continuous improvement, all aimed at building a process that produces a reliable result. Quality control is the inspection side, checking the specific output against a specification, as when an integrator inside a tray or a cleaning verification test tells you whether that particular item met the requirement. Reversing the two inverts the definitions. Neither term is divided by subject matter, so splitting them between instruments and staffing is invented. And both are performed inside the department; an outside surveyor evaluates the program but does not constitute the quality control function.HSPA CRCST Content Outline

Why does a department track its immediate-use steam sterilization rate as a benchmark?

• a.A climbing rate points to thin instrument inventory or scheduling problems✓
• b.The rate determines the shelf life assigned to trays run in those cycles
• c.A climbing rate shows the department is meeting operating room turnover goals
• d.The rate sets how many biological indicators must be purchased each month

Immediate-use sterilization is meant for genuinely urgent situations, so the rate is watched as an indicator of underlying problems: too few instrument sets for the case schedule, sets held up in processing, dropped or contaminated instruments, or poor communication about add-on cases. A rising rate is a warning, not an achievement, because it means more items are released without full monitoring and without the protection of packaging, so reading it as evidence of good turnover misses the point. Indicator purchasing follows the monitoring policy for every cycle type, not the immediate-use rate. And items processed this way are transported immediately and used at once, so no shelf life is assigned to them at all.AAMI ST79

What does a tray audit measure?

• a.Whether the wrapper on a stored set is intact before the set is issued
• b.Whether assembled sets match the count sheet and hold functional instruments✓
• c.Whether the sterilizer reached the temperature and pressure shown on the printout
• d.Whether storage shelves are stocked to the periodic replenishment level

A tray audit is a scheduled inspection of assembled sets against their count sheets, checking that every listed instrument is present, that it is the right item, that it is clean and functional, and that indicators, protectors and labeling are correct. It measures the accuracy of the assembly process and feeds errors back to the technicians and to the count sheet itself. Verifying that the chamber reached temperature is physical monitoring of the sterilizer, read from the printout at the end of the cycle. Checking stock against the replenishment level is an inventory count. Inspecting a wrapper before issue is package integrity inspection, which every user performs, but it says nothing about what is inside the set.HSPA CRCST Content Outline

A department reports instrument set turnaround time. What is being measured?

• a.The number of sets one technician assembles during an eight hour shift
• b.Elapsed time of the sterilizer cycle from the start of exposure through drying
• c.Elapsed time from receipt of the soiled set to its release as a sterile set✓
• d.The time a case cart waits in the operating room before it is picked up

Turnaround time is the full elapsed time a set spends in the department, from the moment the soiled set is received through decontamination, assembly, sterilization and cooling, until it is released and available for the next case. It is tracked because it drives how much instrumentation the facility must own and how often immediate-use sterilization gets requested. The sterilizer cycle time is only one segment of that interval and is set by the cycle parameters. Sets assembled per technician per shift is a productivity measure. The wait before a soiled cart is picked up is a pickup interval, useful for point-of-use compliance but a different metric from turnaround.HSPA CRCST Content Outline

What does an inventory fill rate tell a department?

• a.The share of shelf space in sterile storage currently holding stock
• b.The share of case carts delivered to the operating room on schedule
• c.The share of requested items supplied from stock without a backorder✓
• d.The share of items on a case cart returned unused after the case ends

Fill rate measures service to the customer: of everything requested during a period, what proportion was supplied immediately from stock on hand rather than backordered, substituted or borrowed. A falling fill rate points to par levels that are set too low, unreliable ordering, or demand that has shifted. Shelf space occupancy describes how full the room looks and can be high while the right items are missing. On-time case cart delivery is a separate timeliness measure. Items returned unused indicate picking accuracy and preference card drift, which matters for cost and for reprocessing workload but is not a measure of whether requests could be filled.HSPA CRCST Content Outline

A department uses the Plan-Do-Check-Act cycle to reduce wet packs. What happens in the check step?

• a.The problem is defined, data are gathered and a corrective change is designed
• b.The trial change is run on one sterilizer for a defined trial period
• c.The change that worked is written into policy and spread department wide
• d.The results of the trial change are measured against the baseline data✓

The check step is the measurement step: the wet pack rate observed after the trial is compared against the baseline collected beforehand, which is what tells the team whether the change actually helped or whether the numbers simply moved. Running the trial on one sterilizer for a defined period is the do step. Writing a successful change into policy and spreading it across the department is the act step, and if the check showed no improvement the act step instead returns the team to planning. Defining the problem, gathering the initial data and designing the change is the plan step, which is what supplies the baseline that the check step later measures against.HSPA CRCST Content Outline

A department maps every step of tray assembly and removes the steps that add no value. Which method is this?

• a.Six Sigma, which targets variation and defects through statistical tools
• b.LEAN, which targets waste and non-value-added steps within a process✓
• c.Benchmarking, which compares department results against peer facilities
• d.Root cause analysis, which traces a single adverse event to its origin

Mapping a process and stripping out steps that add no value for the customer is the core of LEAN, whose targets are waste in the form of waiting, motion, transport, overprocessing and excess inventory. Six Sigma is a different discipline aimed at reducing variation and defects, and it leans on statistical measurement and a define, measure, analyze, improve and control structure. Root cause analysis is a retrospective investigation of one adverse event, asking why until the underlying system failure is exposed, rather than a redesign of a routine workflow. Benchmarking compares a department's measured results with peers or with internal history and identifies where to improve without describing how to redesign the work.HSPA CRCST Content Outline