CNOR - Certification Managing Emergency Situations Questions and Answers — 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?
- Administer 100% oxygen as directed.
- Assist in placing the patient in the left lateral Trendelenburg position. (Correct answer)
- Prepare a central line kit for aspiration of air.
- Notify the blood bank of a potential emergency.
Correct answer: Assist in placing the patient in the left lateral Trendelenburg position.
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?
- Administer intravenous dantrolene sodium.
- Begin active cooling with ice packs and chilled saline.
- Discontinue all volatile anesthetic agents and succinylcholine. (Correct answer)
- Draw an arterial blood gas to assess for metabolic acidosis.
Correct answer: Discontinue all volatile anesthetic agents and succinylcholine.
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?
- Leading the resuscitation efforts and calling out orders.
- Maintaining the sterility of the surgical field.
- Performing chest compressions.
- Activating the emergency response system and managing personnel and equipment. (Correct answer)
Correct answer: Activating the emergency response system and managing personnel and equipment.
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?
- Intravenous epinephrine. (Correct answer)
- Intravenous diphenhydramine.
- Intravenous hydrocortisone.
- Inhaled albuterol.
Correct answer: Intravenous epinephrine.
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?
- Locate the manual crank for the operating room bed.
- Notify the hospital's engineering department of the failure.
- Illuminate the surgical field and immediate patient area with emergency flashlights. (Correct answer)
- Begin manually ventilating the patient with an Ambu bag.
Correct answer: Illuminate the surgical field and immediate patient area with emergency flashlights.
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.
Question 6: A trauma patient in the operating room is experiencing massive hemorrhage. The surgeon calls for the activation of the Massive Transfusion Protocol (MTP). The perioperative nurse's role in activating the MTP includes which critical communication step?
- Ordering 10 units of O-negative packed red blood cells STAT.
- Requesting a hematology consult to guide component therapy.
- Performing a point-of-care hemoglobin test before calling the blood bank.
- Clearly stating "Activate the Massive Transfusion Protocol" to the blood bank and specifying the OR location. (Correct answer)
Correct answer: Clearly stating "Activate the Massive Transfusion Protocol" to the blood bank and specifying the OR location.
Activating a Massive Transfusion Protocol (MTP) requires clear, direct, and unambiguous communication. The nurse's critical role is to contact the blood bank and explicitly state the need to "Activate the Massive Transfusion Protocol" for a specific patient in a specific location (e.g., OR 5). This specific phrase triggers a pre-defined emergency response from the blood bank to send coolers of blood products in a fixed ratio (e.g., 1:1:1 of PRBCs, plasma, and platelets) without needing individual orders for each component. Ordering a specific number of units or waiting for lab results would delay this life-saving intervention.
CNOR - Certification Managing Emergency Situations Questions and Answers
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?