CSLB General Building (B) — All Questions

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

• a.Prions, bacterial spores, mycobacteria, nonenveloped viruses, fungi, vegetative bacteria, enveloped viruses✓
• b.Enveloped viruses, vegetative bacteria, fungi, bacterial spores, prions
• c.Vegetative bacteria, bacterial spores, prions, fungi, mycobacteria
• d.Fungi, prions, enveloped viruses, bacterial spores, mycobacteria

Prions are the most resistant agents known and require special extended reprocessing protocols, followed by bacterial spores, which is why spores are used as the challenge organism in biological indicators. Enveloped viruses such as hepatitis B and HIV are among the easiest organisms to inactivate because their lipid envelope is fragile. The other sequences reverse or scramble this hierarchy.CDC

During orientation, a technician is asked to define the term bioburden. Which answer is correct?

• a.The amount of chemical residue remaining on an instrument after rinsing
• b.The number of viable microorganisms present on an item before sterilization✓
• c.The total weight of an assembled instrument set
• d.The concentration of endotoxin in the final rinse water

Bioburden is the microbial population on a device prior to sterilization, and reducing it through thorough cleaning is what makes the sterilization process reliable. Higher starting bioburden means more organisms must be killed to reach the same sterility assurance level. Chemical residue, set weight, and endotoxin levels are separate quality parameters with their own controls.CDC

A surgical instrument that will enter sterile tissue is being reprocessed. According to the Spaulding classification, how must it be processed?

• a.Low-level disinfection is sufficient
• b.High-level disinfection is sufficient
• c.It is a critical device and must be sterilized✓
• d.Cleaning alone is sufficient if the device is single patient use

Critical devices such as surgical instruments, implants, and needles contact sterile tissue or the bloodstream and must be sterilized, because any surviving organism is introduced directly past the body's defenses. Semicritical devices that touch mucous membranes or nonintact skin require at least high-level disinfection. Noncritical devices that contact intact skin need only low-level disinfection, and cleaning is a prerequisite for all three levels.CDC

A technician wants to break the chain of infection during instrument reprocessing. Which action most directly interrupts the mode of transmission link?

• a.Receiving the hepatitis B vaccination series
• b.Reporting to occupational health after an exposure
• c.Keeping the decontamination area under negative pressure
• d.Performing hand hygiene and using containment during handling and transport of contaminated items✓

Mode of transmission is the link describing how an organism moves from a reservoir to a new host, so hand hygiene and containment of soiled items during handling and transport target that link directly. Vaccination protects the susceptible host link. Post-exposure reporting is a response measure rather than a chain interruption, and negative pressure primarily controls the environmental reservoir and airborne spread within the room.CDC

Under the OSHA Bloodborne Pathogens standard, what must the employer provide to an employee with occupational exposure risk?

• a.The hepatitis B vaccination series at no cost, offered within 10 working days of initial assignment, plus free personal protective equipment, training, and an exposure control plan✓
• b.Reimbursement for the hepatitis B vaccine after the employee pays for it
• c.The vaccine only after an employee sustains a documented exposure incident
• d.The vaccine only for employees who work directly in the operating room

The standard requires employers to offer the hepatitis B vaccination series free of charge and at a reasonable time and place within 10 working days of initial assignment to a job with occupational exposure, and to supply personal protective equipment, annual training, and a written exposure control plan at no cost. Employees may decline in writing and may accept later. The protection is not limited to a single department and is not contingent on a prior exposure incident.OSHA 29 CFR 1910.1030

A technician receives a tray from a patient with no known infection and no isolation precautions. What principle of standard precautions applies?

• a.Precautions are applied only when a patient is known to have a bloodborne infection
• b.All blood, body fluids, secretions, excretions except sweat, nonintact skin, and mucous membranes are treated as potentially infectious regardless of the patient's known status✓
• c.Precautions apply only to items arriving from isolation rooms
• d.Precautions apply only to sharp instruments

Standard precautions assume that infectious status is often unknown at the time of contact, so the same protective practices apply to every patient and every contaminated item. This is why all instruments arriving in decontamination are handled as if infectious, whatever the source. Restricting precautions to known infections, isolation cases, or sharps leaves the largest share of undiagnosed exposures unprotected.CDC

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.In the device manufacturer instructions for use for the instruments
• c.On the Safety Data Sheet, which the employer must keep readily accessible to employees during every shift✓
• 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

A technician opens a case cart and finds loose scalpel blades and suture needles mixed in with the instruments. What is the correct action?

• a.Pick the sharps out by hand while wearing double gloves and place them in a basin
• b.Run the entire tray through the washer first so the sharps are disinfected before handling
• c.Return the tray to the operating room without touching it and take no further steps
• d.Use forceps or another mechanical means to transfer the sharps directly into a puncture-resistant sharps container, then report the practice so the procedural area can correct it✓

Sharps are never handled directly, so a mechanical device such as forceps is used to move them into a labeled puncture-resistant container located as close as practical to the point of use. Reporting the finding is essential because the root cause is a point-of-use practice failure that will recur. Processing sharps through a washer does not make them safe to handle, and simply returning the tray leaves the hazard in place for the next person.OSHA 29 CFR 1910.1030

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

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

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 surgeon asks a sterile processing technician to release an instrument set that has not completed its sterilization cycle because the next case is waiting. What is the professional and correct response?

• a.Release the set, because the surgeon holds clinical authority over the department
• b.Release the set and document the surgeon's name as the person responsible
• c.Release the set only if a Class 1 process indicator is attached
• d.Decline to release the set, explain that the process is incomplete, offer alternatives such as another available set or a validated cycle, and escalate to the supervisor if the request continues✓

A technician's professional scope includes refusing to release items that have not completed a validated process, because patient safety outcomes depend on process integrity rather than schedule pressure. The correct approach is to communicate respectfully, offer workable alternatives, and escalate through the chain of command when necessary. Documenting another person's name does not transfer accountability, and an external process indicator provides no evidence that a cycle was completed.