Test Bank Emergency Management in Anesthesia and Critical Care, 1st Edition Authors Jeremy S. Heiner & Mark Gabot & Sassoon Michael Elisha.

Chapter 1: Airway and Surgical Fire 1. Which of the following is the most common cause of airway obstruction in an unconscious patient? A) Foreign body aspiration B) Laryngeal edema C) Tongue displacement D) Bronchospasm Answer: C) Tongue displacement Rationale: In unconscious patients, the tongue often relaxes and obstructs the airway, making tongue displacement the most common cause of airway obstruction. DIF: Moderate TOP: Airway management MSC: Respiratory 2. During a surgical procedure, the anesthesia provider notices a sudden rise in airway pressure with absent breath sounds. What is the most appropriate immediate action? A) Administer a bronchodilator B) Check for endotracheal tube displacement C) Increase the oxygen flow rate D) Suction the airway Answer: B) Check for endotracheal tube displacement Rationale: The most likely cause of a sudden rise in airway pressure with absent breath sounds is endotracheal tube displacement or obstruction. Immediate assessment and repositioning of the tube are necessary. DIF: Moderate TOP: Airway management MSC: Respiratory 3. What is the most appropriate method to confirm proper placement of an endotracheal tube during intubation? A) Monitoring the patient's pulse oximetry B) Visualizing tube placement with a bronchoscope C) Checking for bilateral breath sounds D) Observing chest rise and fall Answer: C) Checking for bilateral breath sounds Rationale: Confirming proper placement of the endotracheal tube is most commonly done by auscultating bilateral breath sounds to ensure the tube is correctly positioned in the trachea and not in the esophagus. DIF: Easy TOP: Airway management MSC: Respiratory 4. Which of the following is the most important prevention strategy for surgical fires during anesthesia? A) Using non-flammable drapes B) Adequately positioning the patient C) Maintaining adequate oxygen levels D) Ensuring proper grounding of electrical equipment Answer: D) Ensuring proper grounding of electrical equipment Rationale: Electrical fires are a common cause of surgical fires, and ensuring proper grounding of electrical equipment helps reduce the risk of sparks that could ignite flammable materials in the operating room. DIF: Hard TOP: Surgical fire prevention MSC: Safety 5. In the event of a surgical fire, what is the first priority action? A) Extinguish the fire B) Remove the patient from the operating room C) Shut off the oxygen supply D) Alert the surgical team Answer: C) Shut off the oxygen supply Rationale: Oxygen can fuel the fire and exacerbate the situation. Shutting off the oxygen supply should be the first priority to prevent further escalation of the fire. DIF: Moderate TOP: Surgical fire management MSC: Safety 6. A patient undergoing surgery has a sudden loss of consciousness. What is the first step in managing a potential airway obstruction? A) Administer oxygen B) Perform a jaw-thrust maneuver C) Insert a nasopharyngeal airway D) Position the patient in a lateral position Answer: B) Perform a jaw-thrust maneuver Rationale: The jaw-thrust maneuver is the most effective first step to open the airway in an unconscious patient. This technique should be used before other interventions like inserting an airway. DIF: Easy TOP: Airway management MSC: Respiratory 7. What is the primary risk factor for airway fire during laser surgery? A) High oxygen concentrations B) Poor ventilation C) Excessive fluid infusion D) Hypothermia Answer: A) High oxygen concentrations Rationale: High oxygen concentrations are a primary risk factor for surgical fires, particularly during laser surgery, as oxygen can act as an accelerant when exposed to sparks or heat. DIF: Moderate TOP: Surgical fire prevention MSC: Safety 8. During intubation, what is the purpose of the rapid-sequence induction (RSI) technique? A) To reduce the risk of aspiration B) To induce anesthesia more quickly C) To ensure faster intubation D) To improve airway ventilation Answer: A) To reduce the risk of aspiration Rationale: Rapid-sequence induction (RSI) is used to minimize the risk of aspiration by rapidly inducing anesthesia and securing the airway in patients at high risk for aspiration. DIF: Moderate TOP: Airway management MSC: Respiratory 9. Which of the following is the most common cause of post-intubation hypoxia? A) Pulmonary embolism B) Endotracheal tube displacement C) Bronchospasm D) Airway obstruction Answer: B) Endotracheal tube displacement Rationale: Post-intubation hypoxia is most often caused by endotracheal tube displacement, which can lead to inadequate ventilation and oxygenation. DIF: Moderate TOP: Airway management MSC: Respiratory 10. In the case of a surgical fire, which of the following should be removed from the operating room immediately? A) The patient’s clothing B) The surgical drapes C) Any alcohol-based prep solutions D) The surgical instruments Answer: C) Any alcohol-based prep solutions Rationale: Alcohol-based prep solutions are flammable and should be removed from the area during a surgical fire to prevent the fire from spreading. DIF: Hard TOP: Surgical fire management MSC: Safety 11. What is the most appropriate method to assess the depth of anesthesia during surgery? A) Monitoring the heart rate B) Using a Bispectral Index (BIS) monitor C) Observing the patient's reflexes D) Measuring blood pressure Answer: B) Using a Bispectral Index (BIS) monitor Rationale: The BIS monitor provides a reliable measurement of the depth of anesthesia by analyzing the brain’s electrical activity, helping to adjust anesthetic levels appropriately. DIF: Moderate TOP: Anesthesia monitoring MSC: Respiratory 12. Which action should be taken first if an airway fire is suspected during surgery? A) Extinguish the fire with a wet towel B) Turn off the oxygen supply C) Evacuate the operating room D) Administer a fire extinguisher Answer: B) Turn off the oxygen supply Rationale: Oxygen is a key accelerant for airway fires. Turning off the oxygen supply is the most critical first step to prevent the fire from worsening. DIF: Hard TOP: Surgical fire management MSC: Safety 13. What is the primary concern when using laser surgery in an oxygen-rich environment? A) Equipment malfunction B) Airway fire C) Infection D) Excessive bleeding Answer: B) Airway fire Rationale: Laser surgery in an oxygen-rich environment increases the risk of an airway fire due to the flammability of oxygen and other materials used in the operating room. DIF: Moderate TOP: Surgical fire prevention MSC: Safety 14. A patient undergoing anesthesia for a minor procedure begins to show signs of airway obstruction. What is the most immediate intervention? A) Administer epinephrine B) Position the head to open the airway C) Increase oxygen concentration D) Perform a cricothyrotomy Answer: B) Position the head to open the airway Rationale: The first and most immediate intervention in a patient showing signs of airway obstruction is to reposition the head to open the airway and restore normal breathing. DIF: Easy TOP: Airway management MSC: Respiratory 15. What is the leading cause of intraoperative hypoxia? A) Obstructed airway B) Cardiac arrhythmias C) Hemorrhage D) Pulmonary embolism Answer: A) Obstructed airway Rationale: The most common cause of intraoperative hypoxia is an obstructed airway, which can lead to inadequate oxygen delivery during surgery. DIF: Easy TOP: Airway management MSC: Respiratory 16. prevent airway fires? A) Water-soluble lubricant B) Non-flammable drapes C) Suction equipment D) Fire extinguisher Answer: B) Non-flammable drapes Rationale: Non-flammable drapes are essential in preventing fire during laser surgery. These drapes reduce the likelihood of combustible materials igniting due to sparks or high heat. DIF: Moderate TOP: Surgical fire prevention MSC: Safety 17. What is the most likely cause of airway obstruction during intubation in a patient with a known history of cervical spine injury? A) Tracheal stenosis B) Laryngospasm C) Neck movement D) Foreign body aspiration Answer: C) Neck movement Rationale: In patients with cervical spine injury, neck movement should be minimized to prevent exacerbating the injury or causing airway obstruction. Intubation in these patients requires careful positioning to avoid such movement. DIF: Hard TOP: Airway management MSC: Respiratory 18. What should be done if an endotracheal tube becomes occluded during mechanical ventilation? A) Increase ventilation pressure B) Attempt to clear the tube by suctioning C) Administer a bronchodilator D) Replace the tube immediately Answer: B) Attempt to clear the tube by suctioning Rationale: If the tube is occluded, suctioning is the first step in clearing any obstruction, such as mucus or blood, before considering tube replacement. DIF: Moderate TOP: Airway management MSC: Respiratory 19. Which of the following is a key strategy to reduce the risk of surgical fire when using an electrosurgical unit (ESU)? A) Increase the oxygen concentration in the operating room B) Ensure proper grounding of the ESU C) Avoid using laser devices simultaneously D) Use alcohol-based antiseptics for skin preparation Answer: B) Ensure proper grounding of the ESU Rationale: Proper grounding of the electrosurgical unit (ESU) helps prevent electrical burns and fires by ensuring the electrical current is safely directed away from the patient and surrounding materials. DIF: Hard TOP: Surgical fire prevention MSC: Safety 20. In the event of a fire during surgery, what should be done to extinguish the fire? A) Use a water-based fire extinguisher B) Apply a dry powder extinguisher C) Douse the fire with saline solution D) Smother the fire with a sterile drape Answer: B) Apply a dry powder extinguisher Rationale: A dry powder fire extinguisher is the most effective for putting out fires in the operating room, especially those involving electrical equipment or flammable materials. DIF: Hard TOP: Surgical fire management MSC: Safety