CRNFA Surgical Instrumentation and Equipment 2

Question 1

Which electrosurgical mode uses a continuous waveform to achieve tissue cutting with minimal hemostasis?

Accepted Answer

Cut mode

Answer

Blend mode

Answer

Coagulation mode

Answer

Bipolar mode

Question 2

The CRNFA notes that a laparoscopic trocar is labeled '12 mm.' This measurement refers to the:

Accepted Answer

Outer diameter of the trocar cannula

Answer

Length of the trocar sleeve

Answer

Inner diameter of the trocar cannula

Answer

Diameter of the insufflation port

Question 3

Which of the following describes the correct technique when passing a sharp instrument to the surgeon?

Accepted Answer

Use a neutral zone or hands-free technique to avoid percutaneous injuries

Answer

Place it directly into the surgeon's palm handle-first while maintaining eye contact

Answer

Verbally announce the instrument and hand it tip-first for speed

Answer

Pass it any way that is most convenient given the operative situation

Question 4

A Harrington ('sweetheart') retractor is most commonly used to retract which structure?

Accepted Answer

The liver during upper abdominal surgery

Answer

Brain tissue during craniotomy

Answer

The bladder during pelvic surgery

Answer

The lung during thoracotomy

Question 5

Which vessel-sealing device uses bipolar energy combined with pressure to create a permanent seal on vessels up to 7 mm in diameter?

Accepted Answer

LigaSure

Answer

Harmonic scalpel

Answer

Monopolar ESU pencil

Answer

Argon beam coagulator

Question 6

The Harmonic scalpel achieves hemostasis primarily through which mechanism?

Accepted Answer

Ultrasonic vibration causing protein coagulation at low temperatures

Answer

Electrical current generating heat via resistance

Answer

Argon gas–enhanced coagulation

Answer

Mechanical compression of vessel walls only

Question 7

When handling instruments that have been exposed to Creutzfeldt-Jakob disease (CJD) prions, standard sterilization with steam autoclave is:

Accepted Answer

Insufficient; prions require specialized decontamination protocols

Answer

Sufficient if a full prevacuum cycle is used

Answer

Sufficient when combined with glutaraldehyde soaking

Answer

Sufficient only if high-temperature 273°F (134°C) cycles are doubled