CNOR Operating Room 2

Question 1

Which zone of the operating room suite requires the highest level of air cleanliness and restricted access?

Accepted Answer

Restricted zone

Answer

The restricted zone includes the operating rooms and requires masks, surgical attire, and the highest level of access control.

Question 2

A surgeon requests that a bovie electrosurgical unit be used near a patient with a pacemaker. What is the perioperative nurse's priority action?

Accepted Answer

Use bipolar electrosurgery instead of monopolar when possible

Answer

Bipolar electrosurgery limits current flow to the tissue between the two tips, minimizing electromagnetic interference with the pacemaker.

Question 3

During a laparoscopic procedure, the patient's end-tidal CO2 suddenly rises to 65 mmHg. What should the perioperative nurse suspect first?

Accepted Answer

CO2 gas embolism

Answer

A sudden, severe rise in end-tidal CO2 during laparoscopy is a classic sign of CO2 gas embolism.

Question 4

What is the recommended minimum number of air exchanges per hour in an operating room?

Accepted Answer

15-20

Answer

AORN guidelines recommend a minimum of 15 air changes per hour in the OR, with at least 3 of those being fresh outside air.

Question 5

Which type of anesthesia is most appropriate for a patient undergoing a cesarean section who desires to remain awake?

Accepted Answer

Spinal or epidural anesthesia

Answer

Spinal or epidural (regional) anesthesia allows the patient to remain conscious and is the standard of care for cesarean sections.

CNOR - Certification Exam Practice Test