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

The cut mode delivers a continuous, unmodulated waveform that rapidly vaporizes tissue, producing a clean cut with minimal lateral thermal spread.

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

Trocar sizes are designated by the outer diameter of the cannula, which determines the largest instrument that can be passed through it.

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

AORN and OSHA standards recommend a neutral zone (hands-free passing technique) for all sharps to reduce percutaneous injury risk in the OR.

Question 4

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

Accepted Answer

The liver during upper abdominal surgery

Answer

The Harrington retractor, named for its heart-shaped blade, is designed to lift and retract the liver and spleen during upper abdominal procedures.

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

LigaSure uses bipolar radiofrequency energy and mechanical pressure to denature collagen and elastin, creating a permanent seal on vessels up to 7 mm.

CRNFA - Certified Registered Nurse First Assistant Practice Test

CRNFA - Certified Registered Nurse First Assistant Practice Test

CRNFA Surgical Instrumentation and Equipment 2