CNOR - Certification Managing Emergency Situations Questions and Answers

Question 1

During a laparoscopic procedure, the anesthesia provider announces a sudden, unexplained drop in end-tidal CO2, accompanied by hypotension and tachycardia. A venous air embolism is suspected. What is the perioperative nurse's IMMEDIATE priority action?

Accepted Answer

Assist in placing the patient in the left lateral Trendelenburg position.

Answer

The immediate priority is to reposition the patient into the left lateral Trendelenburg (Durant's maneuver). This position helps to trap the air in the apex of the right ventricle, preventing it from entering the pulmonary artery and causing a life-threatening right ventricular outflow obstruction or 'air lock'. While administering 100% oxygen and preparing for central line placement are also important interventions, repositioning is the most critical first step to mitigate the immediate danger.

Question 2

A patient under general anesthesia for a major abdominal surgery begins to exhibit muscle rigidity, a rapid rise in end-tidal CO2, and sinus tachycardia. The surgical team suspects malignant hyperthermia (MH). Which of the following is the first and most critical intervention?

Accepted Answer

Discontinue all volatile anesthetic agents and succinylcholine.

Answer

The absolute first step in managing a malignant hyperthermia crisis is to immediately stop all triggering agents, which include all volatile inhalation anesthetics (e.g., sevoflurane, desflurane) and the depolarizing muscle relaxant succinylcholine. This action removes the cause of the hypermetabolic state. While administering dantrolene, cooling the patient, and assessing blood gases are all crucial subsequent steps, they are performed only after the triggering agents have been discontinued.

Question 3

An intraoperative cardiac arrest (Code Blue) is called. As the circulating nurse, which of the following responsibilities is a primary part of your role in the initial response?

Accepted Answer

Activating the emergency response system and managing personnel and equipment.

Answer

The circulating nurse's primary role in a Code Blue is to manage the overall OR environment. This includes formally activating the hospital's emergency response system, ensuring the code cart and defibrillator are at the patient's side, directing additional responding personnel, and documenting the events of the code. The anesthesia provider typically leads the resuscitation, the scrub person maintains sterility, and chest compressions are performed by any available BLS/ACLS-certified team member.

Question 4

A patient receiving a prophylactic antibiotic at the start of a procedure suddenly develops hypotension, bronchospasm, and widespread urticaria. The perioperative team diagnoses anaphylaxis. Which medication should the nurse anticipate and prepare for immediate administration?

Accepted Answer

Intravenous epinephrine.

Answer

Epinephrine is the first-line and most critical treatment for anaphylaxis. It addresses the life-threatening manifestations of anaphylaxis by causing vasoconstriction (reversing hypotension), bronchodilation (relieving bronchospasm), and decreasing further mediator release from mast cells. Antihistamines (diphenhydramine) and corticosteroids (hydrocortisone) are considered second-line treatments that do not reverse the life-threatening symptoms as rapidly as epinephrine. Albuterol may be used as an adjunct for bronchospasm but does not treat the systemic effects.

Question 5

During a total hip arthroplasty, the OR experiences a complete power failure. The emergency generator fails to activate, resulting in a total loss of light and power to all equipment. Which of the following actions is the perioperative nurse's HIGHEST priority?

Accepted Answer

Illuminate the surgical field and immediate patient area with emergency flashlights.

Answer

In a complete power failure, the immediate priority for the entire team is patient safety, which begins with providing adequate lighting. The circulating nurse should immediately use battery-powered flashlights or headlamps to illuminate the surgical field so the surgeon can control any bleeding and the anesthesia provider can assess the patient and equipment. While other actions like notifying engineering are important, they are secondary to ensuring the team can see to provide immediate, life-sustaining care. Manual ventilation is the responsibility of the anesthesia provider.

CNOR - Certification Exam Practice Test

CNOR - Certification Exam Practice Test

CNOR - Certification Managing Emergency Situations Questions and Answers