CBET Surgical Equipment Technology 5

Question 1

A pneumatic tourniquet used in orthopedic surgery is displaying pressure that fluctuates ±30 mmHg during inflation. The MOST likely cause is:

Accepted Answer

Leak in the cuff bladder or connecting tubing

Answer

Incorrect limb occlusion pressure setting

Answer

Low wall gas supply pressure

Answer

Cuff applied over excessive padding

Question 2

Which safety feature prevents inadvertent activation of an electrosurgical unit when the active electrode is not in use?

Accepted Answer

Holster with passive safety switch

Answer

Footswitch interlock

Answer

Auto-off timer relay

Answer

Impedance monitoring circuit

Question 3

During arthroscopic surgery, the fluid pump pressure is set to 60 mmHg but the surgeon reports poor visualization. What should the BMET check FIRST?

Accepted Answer

Integrity of the arthroscope sheath seals and outflow cannula patency

Answer

Pump motor speed calibration

Answer

Fluid bag temperature

Answer

Light source cable connection

Question 4

What is the primary hazard associated with improper grounding of a surgical robot in the OR?

Accepted Answer

Leakage current could flow through the patient, causing burns or cardiac events

Answer

Robot positional accuracy will degrade

Answer

Instrument servo motors may stall

Answer

Vision system latency will increase

Question 5

A harmonic scalpel generates heat through which mechanism?

Accepted Answer

Ultrasonic vibration causing molecular friction within tissue

Answer

Radiofrequency current passed through tissue

Answer

Laser photon absorption by chromophores

Answer

Resistive heating of a metal blade

Question 6

When performing electrical safety testing on a powered surgical drill, which test is used to verify that current does not flow through the equipment's chassis to ground during normal operation?

Accepted Answer

Chassis leakage current test

Answer

Dielectric strength test

Answer

Insulation resistance test

Answer

Ground continuity test

Question 7

A surgical headlight powered by a fiber optic light source produces uneven illumination with a dark center spot. The MOST probable cause is:

Accepted Answer

Broken fiber bundles at the center of the light guide cable

Answer

Insufficient lamp wattage

Answer

Contaminated headlight lens

Answer

Incompatible light source coupling adapter