CSLB General Building (B) — All Questions

A technician is inspecting instruments at the assembly workstation. Which tool and technique should be used?

• a.Lighted magnification, examining each instrument for cleanliness, cracks, pitting, alignment, and proper function before assembly✓
• b.A quick visual scan under overhead lighting, since the washer verifies cleanliness
• c.Testing only the instruments that were flagged by the operating room on the count sheet
• d.Wiping instruments with alcohol to reveal residual soil

Every instrument is individually inspected under lighted magnification because fine cracks, residual soil in serrations, worn tips, and misaligned jaws are not visible to the unaided eye. Mechanical cleaning reduces bioburden but does not guarantee that a specific device is clean or functional. Selective inspection and alcohol wiping are not substitutes for full item-by-item inspection and functional testing.AAMI ST79

How should the cutting performance of surgical scissors be verified during inspection?

• a.By running a fingernail along the blade edge
• b.By cutting through the appropriate test material, such as several layers of gauze or a test material specified by the manufacturer, using the distal third of the blades✓
• c.By holding the blades up to the light to check for gaps
• d.By opening and closing the scissors to check the pivot screw only

Scissors are tested by cutting a standardized material with the tips, because the distal portion of the blades is where dullness first appears and where clinical cutting failures occur. Feeling the edge is subjective and creates a sharps injury risk. Light inspection and pivot checks are useful additional steps but do not confirm cutting performance.AAMI ST79

A technician notices that a hinged instrument is stiff during inspection and asks which lubricant to apply before packaging. What is correct?

• a.A petroleum-based penetrating oil applied to hinges
• b.Silicone spray intended for industrial equipment
• c.A water-soluble, steam-penetrable instrument lubricant applied per manufacturer instructions✓
• d.No lubricant should ever be applied to instruments

Instrument lubricant, sometimes called instrument milk, is water soluble so steam can penetrate it and reach the metal surface, and it protects hinges and box locks from stiffness and corrosion. Petroleum-based oils and industrial sprays form a barrier that blocks sterilant contact and can leave toxic residues. Lubrication is a normal step for hinged instruments when the manufacturer directs it.AAMI ST79

An instrument set is being assembled. Which practice supports effective sterilization and safe handling?

• a.Lock all ratcheted instruments closed so they do not shift in the tray
• b.Nest all concave items facing upward so they hold their position
• c.Stack heavy retractors on top of delicate microsurgical instruments to keep them from moving
• d.Place hinged instruments open on a stringer, put heavy items on the bottom, protect delicate tips, and keep total set weight within recommended limits, commonly about 25 pounds✓

Correct assembly keeps hinged instruments open so steam reaches mating surfaces, distributes weight so delicate items are not crushed, and limits set weight to reduce wet packs and ergonomic injury. Concave items are positioned so condensate can drain rather than pool. Closed ratchets shield surfaces from sterilant, and stacking heavy instruments over delicate ones damages them and blocks steam.AAMI ST79

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

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.AAMI ST79

What must be verified about a rigid sterilization container each time it is used?

• a.That the container has been polished and is free of fingerprints
• b.That filters are correct, unused, and properly seated; that valves, gaskets, latches, and the lid seal are intact; and that a tamper-evident lock is applied after assembly✓
• c.That the container is completely airtight so no organisms can enter
• d.That the container weighs less than 5 pounds when empty

Rigid containers depend on intact filters, gaskets, and valves to allow sterilant in and keep contaminants out, so each of these is inspected before every use and single-use filters are replaced. A tamper-evident lock shows at the point of use that the container has not been opened since processing. Containers are deliberately not airtight, since steam must enter, and empty weight is not a use criterion.AAMI ST79

A technician is applying labels to packages as they are assembled for sterilization. What information belongs on the label of a sterilized package?

• a.The patient name and procedure date only
• b.The technician name only
• c.A lot control number identifying the sterilizer, cycle number, and date, plus a description of the contents and the identity of the person who assembled the package✓
• d.The expiration date only, with no other information

Lot control labeling is what makes recall possible, because it links a specific package back to a specific sterilizer and cycle in the load records. A contents description lets users select the right package without opening it, and assembler identification supports quality follow-up. Patient names are not applied to inventory packages, and an expiration date alone provides no traceability.AAMI ST79

A facility uses event-related sterility. What does this mean?

• a.Packages expire exactly 30 days after the sterilization date
• b.Packages must be reprocessed at the end of each month regardless of condition
• c.Packages remain sterile only while stored in a closed cabinet, and become nonsterile once moved to open shelving
• d.A package is considered sterile until an event such as moisture, a tear, a broken seal, or contaminated handling compromises the barrier, regardless of elapsed time✓

Event-related sterility recognizes that packaging integrity, handling, and storage conditions determine sterility rather than the passage of time, so staff inspect each package before use for wetness, holes, broken seals, and soiling. Time-related shelf life assigns an arbitrary expiration date and is now used mainly for products whose manufacturer specifies one. Storage furniture type affects risk and handling practice but does not by itself define the sterility approach.AAMI ST79

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

• a.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✓
• b.Temperature of 60 to 65 degrees F and 10 air exchanges per hour under negative pressure
• c.Any temperature, as long as humidity stays above 70 percent
• d.Temperature above 80 degrees F to keep packages thoroughly dry

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

Sterile packages are being placed on open shelving. What clearances should be maintained?

• a.At least 2 inches from the floor, 8 inches from the ceiling, and 18 inches from outside walls
• b.At least 8 to 10 inches from the floor, 18 inches from sprinkler heads, and about 2 inches from outside walls✓
• c.Flush to the wall to maximize usable shelf depth, with no floor clearance requirement
• d.At least 24 inches from the floor and 24 inches from the ceiling

Bottom shelves are raised 8 to 10 inches off the floor so wet mopping and floor contamination do not reach packages, 18 inches of clearance below sprinkler heads preserves fire suppression coverage, and roughly 2 inches from outside walls prevents condensation from wall surfaces reaching the packaging. The reversed and oversized figures in the other options do not match recognized practice and would either compromise fire protection or waste storage capacity without benefit.AAMI ST79

Why are corrugated cardboard shipping boxes prohibited in sterile storage areas?

• a.Cardboard absorbs the humidity needed to keep packaging pliable
• b.Cardboard blocks the airflow needed for positive pressure
• c.Cardboard sheds particulate, can harbor insects and moisture, and comes from uncontrolled outside environments✓
• d.Cardboard cannot be labeled with a lot control number

External shipping cartons travel through warehouses and loading docks, so they carry dust, pests, and moisture into a clean environment and they generate fiber particulate when handled. Supplies are removed from shipping containers in a separate breakout area before entering sterile storage. Airflow, humidity balance, and labeling are not the reasons behind the prohibition.AAMI ST79

A case cart of sterile packages must travel across the facility to an ambulatory procedure area. How should it be transported?

• a.Uncovered, so staff can verify the contents during transit
• b.Covered with a reusable cloth sheet that is laundered weekly
• c.In an open wire cart pushed quickly through public corridors
• d.In a closed or covered cart that protects packages from moisture, dust, and physical damage, handled to avoid crushing or compression✓

Sterile packages must be shielded from environmental contamination and mechanical damage during transport, and closed or covered carts accomplish both while keeping the load contained. Handling matters as much as covering, because compression, dropping, and dragging can breach a barrier without visible damage. Uncovered transport through corridors and infrequently laundered cloth covers do not provide reliable protection.AAMI ST79

A technician is restocking sterile storage with trays that were processed this morning. What inventory practice should be used?

• a.Last in, first out, so the newest and cleanest packages are used first
• b.Random selection, since event-related sterility makes rotation unnecessary
• c.First in, first out, placing newly processed packages behind existing stock so older packages are used first✓
• d.Rotate only implants and specialty trays; routine sets do not need rotation

First in, first out limits how long any package sits on the shelf, which reduces handling wear and the chance of an unnoticed barrier breach, and it keeps stock moving even under an event-related sterility policy. Event-related sterility means packages do not expire by date alone, but it does not eliminate the value of rotation and routine package inspection. Rotation applies to all sterile inventory, not only high-value items.AAMI ST79

A technician notices that a wrapped tray on the sterile storage shelf has a small tear in the outer wrapper. What should be done?

• a.Apply a patch of sterilization tape over the tear and return the tray to the shelf
• b.Remove the outer wrapper and use the tray, since the inner wrapper is intact
• c.Place the tray at the back of the shelf and use it only for non-sterile procedures
• d.Consider the package contaminated, return it to the department, and fully reprocess the contents including cleaning, inspection, repackaging, and sterilization✓

Any breach in packaging integrity is an event that ends sterility, so the package is removed from inventory and reprocessed from the beginning rather than salvaged. Taping a tear does not restore a sterile barrier and hides the defect from the next user. Assuming the inner wrapper stayed sterile is not defensible, and there is no lower-risk shelf on which a compromised sterile package may be kept.AAMI ST79