Primary FRCA Part 4: Physics & Equipment Exam 2026
2027 | Most Recent Exam Actual Complete Real Exam
217 Questions And Correct Answers (Verified Answers)
Already Graded A+ |Guaranteed Success!! Newest Exam
| Just Released!!
Apply principles of physics and measurement to anaesthesia, including pressure,
flow, gas laws, vaporizers, electrical safety, and monitoring. (217 cards)
1
Q
How are fibreoptic endoscopes decontaminated?
ANSWERS:
IMMEDIATELY AFTER USE
Manually clean external surfaces with enzymatic detergent
Suction enzymatic detergent through suction channel followed by sterile
water
AT STERILISING UNIT
Liquid immersion in peracetic acid
Vacuum pack and ready for reuse or stored in cabinet with dry, filtered air
2
Q
What is the maximum voltage, root mean squared voltage and frequency
of main electricity in the UK?
ANSWERS:
Max: 340 V
RMS: 240 V
Frequency: 50 Hz (each wave takes 0.02 s)
,3
Q
What are some aspects of mains electricity design in the theatre that protects
patients from electrocution?
ANSWERS:
INFRASTRUCTURE
Equipotential bonding
Isolation transformers
Circuit breakers
OTHER
Regular maintenance
Correct humidity
High impedance footwear
Antistatic flooring
4
Q
Define:
microshock
ANSWERS:
Electrical injury to the heart by a small electrical current which would normally
be considered safe (requires a conductor in contact with the heart such as a
pacing wire).
5
Q
Define:
radiation
,ANSWERS:
Emission and transfer of energy from a source in the form of waves or particles
through space or a medium.
ELECTROMAGNETIC (e.g. Gamma, X-Ray)
PARTICLE (e.g. alpha and beta particles)
6
Q
List different lasing mediums and their respective wavelengths and uses.
ANSWERS:
Argon (400-600 nm): used in ophthalmic surgery.
Nd:YAG (1060 nm): used for endoscopic surgery (e.g. GI bleeds)
CO2 (10,600 nm): used for superficial airway surgery
7
Q
How are the risks of laser to staff minimised?
ANSWERS:
Laser safety officer
Wearing protective goggles (specific to wavelength being used)
Laser signs
Blinds on doors and windows
8
Q
What are the advantages and disadvantages of a Cardiff aldasorber?
ANSWERS:
, ADVANTAGES
Small and portable
Cheap
DISADVANTAGES
Can only assess exhaustion by weighing it
Requires replacement every 12 hours
Nitrous is NOT absorbed
Heating canister releases volatiles
9
Q
How much dead space is in the epidural filter?
ANSWERS:
1 mL
10
Q
What are some key features of a pulmonary artery catheter?
ANSWERS:
110 cm, 7 Fr catheter
Distal port (tip)
Balloon
Thermistor (4 cm from tip)
Proximal port (30 cm from tip)
11
Q
What is the error on a pulse oximetry probe?
2027 | Most Recent Exam Actual Complete Real Exam
217 Questions And Correct Answers (Verified Answers)
Already Graded A+ |Guaranteed Success!! Newest Exam
| Just Released!!
Apply principles of physics and measurement to anaesthesia, including pressure,
flow, gas laws, vaporizers, electrical safety, and monitoring. (217 cards)
1
Q
How are fibreoptic endoscopes decontaminated?
ANSWERS:
IMMEDIATELY AFTER USE
Manually clean external surfaces with enzymatic detergent
Suction enzymatic detergent through suction channel followed by sterile
water
AT STERILISING UNIT
Liquid immersion in peracetic acid
Vacuum pack and ready for reuse or stored in cabinet with dry, filtered air
2
Q
What is the maximum voltage, root mean squared voltage and frequency
of main electricity in the UK?
ANSWERS:
Max: 340 V
RMS: 240 V
Frequency: 50 Hz (each wave takes 0.02 s)
,3
Q
What are some aspects of mains electricity design in the theatre that protects
patients from electrocution?
ANSWERS:
INFRASTRUCTURE
Equipotential bonding
Isolation transformers
Circuit breakers
OTHER
Regular maintenance
Correct humidity
High impedance footwear
Antistatic flooring
4
Q
Define:
microshock
ANSWERS:
Electrical injury to the heart by a small electrical current which would normally
be considered safe (requires a conductor in contact with the heart such as a
pacing wire).
5
Q
Define:
radiation
,ANSWERS:
Emission and transfer of energy from a source in the form of waves or particles
through space or a medium.
ELECTROMAGNETIC (e.g. Gamma, X-Ray)
PARTICLE (e.g. alpha and beta particles)
6
Q
List different lasing mediums and their respective wavelengths and uses.
ANSWERS:
Argon (400-600 nm): used in ophthalmic surgery.
Nd:YAG (1060 nm): used for endoscopic surgery (e.g. GI bleeds)
CO2 (10,600 nm): used for superficial airway surgery
7
Q
How are the risks of laser to staff minimised?
ANSWERS:
Laser safety officer
Wearing protective goggles (specific to wavelength being used)
Laser signs
Blinds on doors and windows
8
Q
What are the advantages and disadvantages of a Cardiff aldasorber?
ANSWERS:
, ADVANTAGES
Small and portable
Cheap
DISADVANTAGES
Can only assess exhaustion by weighing it
Requires replacement every 12 hours
Nitrous is NOT absorbed
Heating canister releases volatiles
9
Q
How much dead space is in the epidural filter?
ANSWERS:
1 mL
10
Q
What are some key features of a pulmonary artery catheter?
ANSWERS:
110 cm, 7 Fr catheter
Distal port (tip)
Balloon
Thermistor (4 cm from tip)
Proximal port (30 cm from tip)
11
Q
What is the error on a pulse oximetry probe?
