CNOR CNOR - Certification Surgical Instrumentation and Equipment 2

Question 1

Which power tool requires nitrogen or compressed air as its energy source?

Accepted Answer

Pneumatic drill or saw

Answer

Pneumatic-powered surgical tools such as drills and saws use compressed nitrogen or air to drive their cutting mechanisms.

Question 2

The harmonic scalpel differs from conventional electrosurgery because it:

Accepted Answer

Uses ultrasonic vibration to cut and coagulate simultaneously with minimal thermal spread

Answer

The harmonic scalpel converts electrical energy into ultrasonic mechanical vibration, producing less lateral thermal damage than monopolar ESU.

Question 3

Which retractor type is self-retaining and does not require a team member to hold it?

Accepted Answer

Balfour retractor

Answer

The Balfour retractor is a self-retaining abdominal retractor that locks in place, freeing team members for other tasks.

Question 4

When is the final instrument, sponge, and sharp count performed?

Accepted Answer

At the beginning of wound closure and before the patient leaves the OR

Answer

Final counts are performed before wound closure begins and verified again before the patient leaves the OR to detect any discrepancy.

Question 5

Which instrument is used to approximate wound edges during fascial closure?

Accepted Answer

Kocher or Allis clamp used to grasp fascia while placing sutures

Answer

Kocher or Allis clamps are used to grasp and approximate fascial edges while the surgeon places closure sutures.

CNOR - Certification Exam Practice Test