Prometric Exam Questions for Operation Theatre Technicians 2026: 15 Practice MCQs with Answers and Rationale for the OPE6112 and OPE6113 Papers

Operation theatre technicians (OPE6112) and technologists (OPE6113) keep the surgical team safe: a sterile field that stays sterile, the right instrument in the right hand, a correct count, a patient positioned without injury and a calm response when something goes wrong. The Prometric papers test exactly that. They are usually 100 to 150 single-best-answer questions in 2 to 3 hours, with pass marks around 50 to 55%.

The fifteen questions below follow the blueprint. Allow about 70 seconds each and read every rationale. Sterilisation parameters, instrument names and the count rules are pure recall and worth the most marks per minute of study.

For eligibility, titles and the syllabus, read the operation theatre and dialysis technician guide. For timed papers use the OT Technician bank or the OT Technologist bank.

Sterilisation and asepsis

Question 1

The parameters of a standard pre-vacuum steam sterilisation cycle for wrapped instruments are approximately:

1. 121 °C for 4 minutes
2. 134 °C for 3 to 4 minutes, or 121 °C for 15 to 20 minutes, under pressure
3. 100 °C for 30 minutes
4. 170 °C for 10 minutes

Answer: B. Both cycles are standard steam sterilisation; the 134 °C pre-vacuum cycle is used for most wrapped sets. Dry heat at 160 to 170 °C needs one to two hours and is for items steam would damage.

Question 2

Which indicator confirms that the sterilisation process actually killed spores in a load?

1. Chemical indicator tape on the outside of the pack
2. A biological indicator containing Geobacillus stearothermophilus spores, incubated after the cycle
3. The autoclave's printed cycle record
4. The colour of the wrap

Answer: B. Chemical indicators show exposure to the process; only a biological indicator proves lethality. The Bowie-Dick test checks air removal in pre-vacuum sterilisers each day.

Question 3

Which method is appropriate for sterilising heat-sensitive flexible endoscopes and some plastics?

1. Steam at 134 °C
2. Low-temperature methods such as hydrogen peroxide gas plasma or ethylene oxide, or high-level disinfection where sterilisation is not required
3. Boiling water
4. Alcohol wipe

Answer: B. Heat-sensitive devices use low-temperature sterilisation or validated high-level disinfection. Ethylene oxide needs long aeration; gas plasma is faster but cannot process long narrow lumens or cellulose.

Question 4

While scrubbed, your sterile gown is considered sterile:

1. From head to toe
2. In front from the chest to the level of the sterile field, and the sleeves from two inches above the elbow to the cuff
3. On the back as well as the front
4. Only on the gloves

Answer: B. The back, the area below the sterile field and the neckline are non-sterile. Hands are kept above the waist and in front of the body; cuffs are covered by gloves.

Instruments

Question 5

Which instrument is used to grasp and hold tissue during dissection with the least crushing?

1. Kocher forceps
2. Babcock forceps
3. Towel clip
4. Needle holder

Answer: B. Babcock forceps have a fenestrated, atraumatic jaw for bowel and delicate tissue. Kocher forceps have toothed, crushing jaws for tough tissue and vessel pedicles.

Question 6

A Metzenbaum scissor is used for:

1. Cutting sutures
2. Dissecting delicate tissue
3. Cutting bone
4. Cutting drapes

Answer: B. Metzenbaums are fine dissecting scissors and are damaged by suture or drape cutting; Mayo scissors cut sutures and heavy tissue.

Question 7

A scalpel blade number 15 is typically mounted on a handle number:

1. 3
2. 4
3. 7 only
4. Any handle

Answer: A. Blades 10, 11, 12 and 15 fit the number 3 (and 7) handle; blades 20 to 25 fit the number 4 handle. Blades are loaded and removed with a needle holder, never fingers.

Counts, specimens and electrosurgery

Question 8

Surgical counts of swabs, sharps and instruments are performed:

1. Only at the end of the operation
2. Before the procedure starts, before closure of a cavity, before wound closure, and at skin closure, by two people, one of them the scrub person
3. Once, by the surgeon
4. Only if a swab is missing

Answer: B. Counts are done aloud by two people at each stage and documented. An incorrect count means a search, an x-ray if unresolved, and an incident report before the patient leaves theatre.

Question 9

A specimen for frozen section should be sent:

1. In formalin
2. Fresh, unfixed, labelled, and taken to pathology immediately
3. In saline after an hour
4. In alcohol

Answer: B. Frozen sections are cut from fresh tissue; formalin fixation prevents them. Routine histology specimens go in 10% buffered formalin with the container labelled before leaving the sterile field area.

Question 10

The return electrode (patient plate) for monopolar diathermy should be placed:

1. Over a bony prominence
2. On a well-vascularised muscular area close to the operative site, away from metal implants and scar tissue
3. Over the heart
4. Anywhere convenient

Answer: B. Poor plate contact or placement causes burns at the pad. The whole pad must contact dry, shaved skin; alcohol prep must dry before diathermy is used.

Positioning and patient safety

Question 11

A patient in the lithotomy position is at particular risk of injury to the:

1. Common peroneal nerve, from pressure at the fibular head, and compartment syndrome in long cases
2. Brachial plexus only
3. Facial nerve
4. Optic nerve

Answer: A. Padded stirrups, avoiding pressure at the fibular head and limiting time in position protect the peroneal nerve. The brachial plexus is at risk with arms abducted beyond 90 degrees in supine or prone positions.

Question 12

The WHO Surgical Safety Checklist "sign in" is completed:

1. After the incision
2. Before induction of anaesthesia, confirming identity, site, consent, allergies, airway risk and blood availability
3. After the patient leaves theatre
4. Only for emergency cases

Answer: B. Sign in precedes induction, time out precedes incision, and sign out precedes the patient leaving. The technician confirms equipment sterility indicators at time out.

Question 13

Which gas cylinder colour identifies nitrous oxide under the ISO code used in most Gulf hospitals?

1. White
2. Blue
3. Grey
4. Black and white

Answer: B. Nitrous oxide is blue, oxygen white, carbon dioxide grey and medical air black and white. Always confirm the label as well as the colour.

Theatre emergencies

Question 14

During surgery the anaesthetist announces malignant hyperthermia. The technician's immediate contribution is to:

1. Leave the theatre
2. Fetch the malignant hyperthermia box with dantrolene, help prepare it, and bring cold saline and ice for cooling
3. Continue instrument counts only
4. Increase the room temperature

Answer: B. Every theatre complex keeps a dedicated MH kit. Dantrolene reconstitution is labour-intensive, so extra hands are vital, along with cooling measures and sending blood samples.

Question 15

A fire starts on the drapes during head and neck surgery with diathermy and oxygen in use. The immediate actions are:

1. Pour water over the patient and leave
2. Stop the flow of oxygen, remove burning drapes from the patient, extinguish with saline or water, and care for the patient while the alarm is raised
3. Use a dry powder extinguisher on the patient first
4. Continue surgery

Answer: B. Surgical fires need fuel (drapes, alcohol prep), oxidiser (oxygen) and ignition (diathermy, laser). Remove the oxidiser and fuel from the patient, extinguish, then assess for airway and skin burns.

How to use these questions

• Memorise sterilisation parameters and indicators; they are a reliable block of marks.
• Learn instruments by name, use and tray, with photographs where you can.
• Know the count rules, positioning injuries and emergency roles as sequences.
• Practise under time in the OT Technician bank or OT Technologist bank, using the error-log method.

Anaesthesia technicians sit a separate paper: anaesthesia technician sample questions. CSSD staff have their own banks (CSSD guide). Allied health pay by country is in the allied health banks guide, and the GCC talent pool lists theatres that are hiring.

Frequently asked questions

How many questions are in the OT technician Prometric exam?

Usually 100 to 150 in 2 to 3 hours. Your eligibility notice gives the exact format.

What is the pass mark?

Around 50% for the technician paper and about 55% for the technologist paper, depending on the authority.

Is the OT technologist exam different from the technician exam?

Same blueprint with more depth on equipment, electrosurgery, laparoscopy and troubleshooting for the technologist title.

Which topics come up most?

Sterilisation and asepsis, instruments, counts and specimen handling, positioning, and theatre emergencies.

Are these real exam questions?

No. They are original practice questions written to the published blueprint. Real exam content is confidential.