CNOR - Certification Surgical Instrumentation and Equipment Flashcards
6 cards from real CNOR practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CNOR - Certification Surgical Instrumentation and Equipment flashcards as text
Which power tool requires nitrogen or compressed air as its energy source?
Answer: Pneumatic drill or saw
Pneumatic-powered surgical tools such as drills and saws use compressed nitrogen or air to drive their cutting mechanisms.
The harmonic scalpel differs from conventional electrosurgery because it:
Answer: Uses ultrasonic vibration to cut and coagulate simultaneously with minimal thermal spread
The harmonic scalpel converts electrical energy into ultrasonic mechanical vibration, producing less lateral thermal damage than monopolar ESU.
Which retractor type is self-retaining and does not require a team member to hold it?
Answer: Balfour retractor
The Balfour retractor is a self-retaining abdominal retractor that locks in place, freeing team members for other tasks.
When is the final instrument, sponge, and sharp count performed?
Answer: At the beginning of wound closure and before the patient leaves the OR
Final counts are performed before wound closure begins and verified again before the patient leaves the OR to detect any discrepancy.
Which instrument is used to approximate wound edges during fascial closure?
Answer: Kocher or Allis clamp used to grasp fascia while placing sutures
Kocher or Allis clamps are used to grasp and approximate fascial edges while the surgeon places closure sutures.
A laser in the operating room requires all team members present to:
Answer: Wear appropriate optical density eyewear specific to the laser wavelength in use
Each laser wavelength requires eyewear with the correct optical density rating to protect team members from retinal or corneal injury.