CNOR Intraoperative Care and Safety 2

Question 1

Which electrosurgical unit (ESU) setting requires the dispersive electrode to be placed as close as possible to the operative site?

Accepted Answer

Monopolar mode

Answer

In monopolar mode, current travels from the active electrode through the patient to the dispersive electrode, so placement near the operative site minimizes current path length and tissue damage.

Question 2

During a laparoscopic procedure, the patient develops sudden onset of hypotension, tachycardia, and decreased oxygen saturation. The surgeon notices a frothy appearance in the suction tubing. What complication is most likely?

Accepted Answer

Venous gas embolism

Answer

Frothy blood in suction tubing combined with hemodynamic instability during insufflation is classic for venous gas embolism, where CO2 enters a venous vessel.

Question 3

The scrub person notes that a sponge count is incorrect before closing a body cavity. What is the immediate first action?

Accepted Answer

Inform the surgeon immediately and search the wound

Answer

An incorrect count must be immediately communicated to the surgeon so the wound can be explored before closure to locate any retained item.

Question 4

Which action best prevents surgical site infections related to instrument handling during a procedure?

Accepted Answer

Confining instruments to the sterile field until needed

Answer

Keeping instruments on the sterile field and passing them back promptly maintains aseptic technique and reduces contamination risk.

Question 5

A patient with a pacemaker is about to undergo monopolar electrosurgery. What precaution is most important?

Accepted Answer

Place the dispersive electrode as far as possible from the pacemaker

Answer

Placing the dispersive electrode away from the pacemaker directs current away from the device and reduces the risk of pacemaker interference or damage.

CNOR - Certification Exam Practice Test

CNOR - Certification Exam Practice Test

CNOR Intraoperative Care and Safety 2