CNOR Managing Emergency Situations 2

Question 1

During a malignant hyperthermia (MH) crisis, which medication is the FIRST-LINE treatment?

Accepted Answer

Dantrolene sodium

Answer

Dantrolene sodium is the specific antidote for malignant hyperthermia and must be administered immediately upon recognition of MH crisis.

Question 2

A patient undergoing general anesthesia develops masseter muscle rigidity after succinylcholine administration. The perioperative nurse should FIRST:

Accepted Answer

Alert the team to potential malignant hyperthermia

Answer

Masseter muscle rigidity after succinylcholine is a classic early warning sign of malignant hyperthermia and the entire team must be alerted immediately.

Question 3

When managing a malignant hyperthermia crisis, which cooling measure is appropriate?

Accepted Answer

Iced saline lavage of open body cavities and IV cold saline

Answer

Active cooling in MH includes iced saline lavage of accessible body cavities, cold IV saline infusion, and surface cooling to rapidly lower core temperature.

Question 4

A scrub technician reports the electrosurgical unit (ESU) is not functioning during a procedure. The IMMEDIATE priority of the circulating nurse is to:

Accepted Answer

Alert the surgeon and prepare for manual hemostasis alternatives

Answer

Patient safety requires alerting the surgeon immediately so hemostasis can be maintained via alternative methods while the equipment issue is resolved.

Question 5

During a laparotomy, the surgeon inadvertently enters the aorta. Which nursing action is HIGHEST priority?

Accepted Answer

Obtain additional suture and prepare for vascular repair

Answer

Life-threatening hemorrhage requires immediate preparation of vascular repair supplies to support the surgeon in controlling bleeding.

CNOR - Certification Exam Practice Test

CNOR - Certification Exam Practice Test

CNOR Managing Emergency Situations 2