Airway Adjuncts and Supraglottic Airway Devices - NREMT AEMT Level

1. What is the most appropriate action regarding cuff inflation for this device?
   Answer: Inflate the cuffs with the specific volume of air recommended by the manufacturer for a size 4. Each size of the King LT airway has a specific, manufacturer-recommended inflation volume. It is critical to use this exact volume to ensure a proper seal without causing excessive pressure and potential tissue damage. For a size 4 (yellow) King LT, this is typically 60-70 mL. Inflating until the pilot balloon is firm is subjective and can lead to over-inflation. The King LT has a single inflation port for both cuffs. Saline is not used for cuff inflation in this device.
2. What is the AEMT's most appropriate course of action?
   Answer: Immediately deflate the cuff and remove the LMA while preparing to suction the airway. When a patient with a supraglottic airway regains consciousness and their protective reflexes (like coughing or gagging), the device must be removed to prevent vomiting and aspiration. The correct procedure is to fully deflate the cuff(s) before removal to minimize trauma to the airway structures. Suction must be immediately available. Holding the device in place or trying to override breathing is inappropriate and dangerous. Removing it with the cuff inflated can cause significant injury.
3. A 21-year-old postictal patient is unresponsive with snoring respirations, RR 8, SpO2 83% on room air, HR 100, BP 128/76. You position, suction, and insert an oropharyngeal airway due to absent gag reflex, then ventilate with BVM. What complication should be monitored for when using an oropharyngeal airway in this patient?
   Answer: Vomiting or aspiration if gag reflex returns This question tests AEMT-level knowledge of airway adjuncts and supraglottic airway devices, focusing on their indications and complications. Airway adjuncts like oropharyngeal and nasopharyngeal airways are used to maintain patency in patients with compromised airway reflexes. Supraglottic devices are used when endotracheal intubation is not feasible. In this scenario, the patient's postictal unresponsive state requires the use of an oropharyngeal airway to maintain airway patency and ensure adequate ventilation. Choice A is correct because it identifies the complication of vomiting or aspiration if gag reflex returns in this specific context. Choice B is incorrect due to a misunderstanding of insertion route, such as associating epistaxis with an oral device. To improve understanding, practice scenarios involving a variety of airway management situations and review the indications and contraindications for each device. Encourage students to focus on patient assessment findings to guide device selection.
4. A 35-year-old with severe asthma is alert and anxious, RR 32, HR 126, BP 144/88, SpO2 85% on room air. You place an NPA to maintain patency and apply CPAP. After CPAP starts, the patient becomes increasingly hypotensive and dizzy. What complication should be monitored for when using CPAP in this scenario?
   Answer: Decreased venous return causing hypotension This question tests AEMT-level knowledge of airway adjuncts and supraglottic airway devices, focusing on their indications and complications. Airway adjuncts like oropharyngeal and nasopharyngeal airways are used to maintain patency in patients with compromised airway reflexes. Supraglottic devices are used when endotracheal intubation is not feasible. In this scenario, the patient's severe asthma with hypotension after CPAP requires monitoring for complications to maintain airway patency and ensure adequate ventilation. Choice C is correct because it identifies the complication of decreased venous return causing hypotension in this specific context. Choice B is incorrect due to a misunderstanding of reflex effects, such as associating tongue obstruction with loss of airway reflexes in CPAP. To improve understanding, practice scenarios involving a variety of airway management situations and review the indications and contraindications for each device. Encourage students to focus on patient assessment findings to guide device selection.
5. At the AEMT level, what is your most important and appropriate action at this time?
   Answer: Insert a supraglottic airway to re-oxygenate the patient. After a failed intubation attempt, especially with falling oxygen saturation, the immediate priority is to re-oxygenate the patient using a rescue airway. The quickest and most reliable method for an AEMT in this situation is to insert a supraglottic airway. This allows for effective ventilation while preparations are made for another, more definitive attempt. Simply preparing for another attempt or applying cricoid pressure does not address the immediate, life-threatening hypoxia. Hyperventilating the patient is also incorrect.
6. Which of the following represents the most critical step when sizing the NPA for this patient?
   Answer: Ensure the length of the device does not exceed the distance from the nose to the earlobe. The most critical step in sizing an NPA is determining the correct length. It should be measured from the tip of the patient's nose to their earlobe. A device that is too long can stimulate the gag reflex or enter the esophagus, while one that is too short will be ineffective. The diameter is also important (it should fit without force), but incorrect length poses a greater immediate risk. Measuring to the angle of the jaw is the technique for sizing an OPA.
7. Which airway management strategy is most appropriate for this patient?
   Answer: Alternate 15 seconds of suctioning with 2 minutes of assisted ventilations. This patient requires both suctioning and ventilation. In cases of copious secretions that rapidly re-accumulate, the provider must alternate between suctioning and ventilating to prevent severe hypoxia. Suctioning should be limited to 15 seconds in an adult to avoid deoxygenation. Placing an SGA is contraindicated until the airway is reasonably clear, as it does not protect from aspiration and secretions can obstruct it. Placing the patient in the recovery position is insufficient for someone who is apneic or bradypneic and requires ventilation.
8. What is the most appropriate management for the nasopharyngeal airway at this time?
   Answer: Leave the NPA in place to maintain airway patency and apply a non-rebreather mask. Even though the patient is breathing spontaneously, their level of consciousness is likely to remain altered, and they are at risk of re-obstructing their airway if the naloxone wears off. The NPA is well-tolerated and should be left in place to ensure continued patency. The patient's spontaneous breathing is adequate, so supplemental oxygen via a non-rebreather mask is the appropriate next step. Removing the adjunct is premature, an OPA is unnecessary and may not be tolerated, and assisted ventilations are not indicated.
9. What is the most likely cause of this change in the EtCO2 reading?
   Answer: Return of spontaneous circulation (ROSC) has occurred. A sudden and significant rise in end-tidal CO2 to a normal or near-normal range (35-45 mmHg) during CPR is the most reliable indicator of Return of Spontaneous Circulation (ROSC). This occurs because restored circulation delivers a large amount of accumulated CO2 from the tissues to the lungs for exhalation. Dislodgement, hyperventilation, or cuff rupture would typically cause a decrease, not a sharp increase, in the EtCO2 reading.
10. What is the most likely cause of this change?
    Answer: The OPA has become dislodged, allowing the tongue to obstruct the airway. The most common reason for a sudden increase in difficulty when ventilating a patient with an OPA is that the device has become dislodged. Patient movement or improper securing can cause the OPA to slip out of position, allowing the tongue to fall back and obstruct the pharynx. The first step should always be to reassess and reposition the airway and the adjunct. While a tension pneumothorax is possible, it is less common and would likely present with other signs like unilateral breath sounds or tracheal deviation.
11. A 22-year-old driver is found after a collision, drowsy and intermittently obstructing: gurgling then snoring, RR 10, SpO2 84% on room air, HR 110, BP 104/70. There is facial swelling and bleeding in the mouth without graphic detail; you suction, maintain manual in-line stabilization, and choose a nasopharyngeal airway because he clenches his teeth and has a gag reflex. BVM ventilation remains difficult, so you place a supraglottic airway and ventilate with good chest rise. Which airway adjunct is most appropriate for this patient initially?
    Answer: Nasopharyngeal airway because mouth access is limited This question tests AEMT-level knowledge of airway adjuncts and supraglottic airway devices, focusing on their indications and complications. Airway adjuncts like oropharyngeal and nasopharyngeal airways are used to maintain patency in patients with compromised airway reflexes. Supraglottic devices are used when endotracheal intubation is not feasible. In this scenario, the patient's facial swelling and clenched teeth with gag reflex requires the use of a nasopharyngeal airway to maintain airway patency and ensure adequate ventilation. Choice B is correct because it identifies the appropriate initial adjunct when mouth access is limited in this specific context. Choice A is incorrect due to a misunderstanding of gag reflex implications, such as using an OPA despite the presence of a gag reflex. To improve understanding, practice scenarios involving a variety of airway management situations and review the indications and contraindications for each device. Encourage students to focus on patient assessment findings to guide device selection.
12. A 23-year-old is postictal with tongue obstruction and snoring, RR 9, SpO2 86% on room air, HR 104, BP 130/82. You attempt to insert an oropharyngeal airway but the patient gags and begins to resist. You instead insert a nasopharyngeal airway and continue assisted ventilation as needed. Which airway adjunct is most appropriate for this patient now?
    Answer: Nasopharyngeal airway because gag reflex is intact This question tests AEMT-level knowledge of airway adjuncts and supraglottic airway devices, focusing on their indications and complications. Airway adjuncts like oropharyngeal and nasopharyngeal airways are used to maintain patency in patients with compromised airway reflexes. Supraglottic devices are used when endotracheal intubation is not feasible. In this scenario, the patient's postictal state with gagging on OPA requires the use of a nasopharyngeal airway to maintain airway patency and ensure adequate ventilation. Choice B is correct because it identifies the most appropriate adjunct since the gag reflex is intact in this specific context. Choice A is incorrect due to a misunderstanding of indications, such as using OPA despite the presence of snoring and gag. To improve understanding, practice scenarios involving a variety of airway management situations and review the indications and contraindications for each device. Encourage students to focus on patient assessment findings to guide device selection.
13. A 24-year-old trauma patient is semi-conscious with intermittent snoring and clenched jaw. Vitals: RR 12 and shallow, HR 118, BP 110/72, SpO2 85% on room air. You suction, maintain C-spine precautions, and insert a nasopharyngeal airway because the gag reflex is present and mouth opening is limited. BVM ventilation is still poor, so you place a supraglottic airway for ventilation. What is the primary indication for using the nasopharyngeal airway here?
    Answer: To maintain patency when OPA is not tolerated This question tests AEMT-level knowledge of airway adjuncts and supraglottic airway devices, focusing on their indications and complications. Airway adjuncts like oropharyngeal and nasopharyngeal airways are used to maintain patency in patients with compromised airway reflexes. Supraglottic devices are used when endotracheal intubation is not feasible. In this scenario, the patient's semi-conscious state with clenched jaw requires the use of a nasopharyngeal airway to maintain airway patency and ensure adequate ventilation. Choice B is correct because it identifies the primary indication to maintain patency when OPA is not tolerated in this specific context. Choice D is incorrect due to a misunderstanding of airway control, such as assuming NPA provides definitive tracheal control. To improve understanding, practice scenarios involving a variety of airway management situations and review the indications and contraindications for each device. Encourage students to focus on patient assessment findings to guide device selection.
14. What is the most likely cause of this presentation, and what is the most appropriate action?
    Answer: The patient is experiencing severe bronchospasm; administer an in-line nebulized bronchodilator. The combination of high ventilation resistance and a "shark fin" capnography waveform in an asthmatic patient is the classic presentation of severe bronchospasm. The airway is correctly placed, but air has difficulty exiting the constricted lower airways. The most appropriate AEMT-level action is to treat the underlying cause by administering a nebulized bronchodilator (like albuterol) in-line with the ventilation circuit, per protocol. The other options do not fit the complete clinical picture.
15. Given the high likelihood of developing severe airway edema, which statement regarding airway management is most accurate?
    Answer: A supraglottic airway may be ineffective if laryngeal swelling becomes severe enough to prevent a proper seal. When you encounter a patient with signs of inhalation injury—soot around the mouth/nose, singed nasal hairs, hoarse voice, and stridor—you're dealing with a rapidly evolving airway emergency. The key concern is progressive swelling that can quickly compromise the airway at multiple levels. Answer D is correct because supraglottic airways (like LMAs or i-gels) rely on creating a seal around the laryngeal inlet. When severe laryngeal edema develops, the anatomy becomes distorted and swollen tissues prevent proper positioning and sealing. The device may not sit correctly, and even if inserted, it won't maintain ventilation if the swelling progresses beyond the device's ability to accommodate. Answer A is wrong because oropharyngeal airways only maintain tongue position—they don't address laryngeal or supraglottic swelling, which is the primary threat here. Answer B is incorrect because while early airway management is crucial, "prophylactic" supraglottic airway insertion isn't standard practice and may delay more definitive airway control when it's truly needed. Answer C misses the point entirely—nasopharyngeal airways aren't contraindicated due to tissue irritation, and this choice ignores the real issue of progressive airway compromise. For NREMT questions about inhalation injuries, remember that airway edema progresses rapidly and unpredictably. Focus on understanding how each airway device works and its limitations when anatomy is distorted. The exam often tests whether you understand that basic airway adjuncts become less effective as swelling worsens—preparing you to recognize when more advanced interventions are needed.
16. A 36-year-old with severe asthma is alert but exhausted, RR 30, HR 124, BP 142/86, SpO2 87% on room air. You insert a nasopharyngeal airway to help maintain patency and apply CPAP. What complication should be monitored for when using a nasopharyngeal airway in this scenario?
    Answer: Epistaxis or nasal mucosa trauma during insertion This question tests AEMT-level knowledge of airway adjuncts and supraglottic airway devices, focusing on their indications and complications. Airway adjuncts like oropharyngeal and nasopharyngeal airways are used to maintain patency in patients with compromised airway reflexes. Supraglottic devices are used when endotracheal intubation is not feasible. In this scenario, the patient's severe asthma with exhaustion requires the use of a nasopharyngeal airway to maintain airway patency and ensure adequate ventilation. Choice A is correct because it identifies the complication of epistaxis or nasal mucosa trauma during insertion in this specific context. Choice B is incorrect due to a misunderstanding of device features, such as associating tracheal perforation with cuff overinflation in an NPA. To improve understanding, practice scenarios involving a variety of airway management situations and review the indications and contraindications for each device. Encourage students to focus on patient assessment findings to guide device selection.
17. A 28-year-old is found unresponsive after suspected opioid overdose with snoring respirations, GCS 6, RR 6 and shallow, SpO2 82% on room air, pulse 52, BP 98/60, pinpoint pupils. You suction, open the airway, and insert an oropharyngeal airway due to absent gag reflex, then attempt BVM ventilation but chest rise is poor and air leaks around the mask. You place a supraglottic device for ventilation and note improved chest rise and SpO2 to 92%. What is the primary indication for using a supraglottic airway in this scenario?
    Answer: To improve ventilation when BVM seal is inadequate This question tests AEMT-level knowledge of airway adjuncts and supraglottic airway devices, focusing on their indications and complications. Airway adjuncts like oropharyngeal and nasopharyngeal airways are used to maintain patency in patients with compromised airway reflexes. Supraglottic devices are used when endotracheal intubation is not feasible. In this scenario, the patient's unresponsive state with poor BVM seal requires the use of a supraglottic airway to maintain airway patency and ensure adequate ventilation. Choice C is correct because it identifies the primary indication for improving ventilation when BVM seal is inadequate in this specific context. Choice D is incorrect due to a misunderstanding of device function, such as assuming supraglottic airways provide definitive tracheal security like an endotracheal tube. To improve understanding, practice scenarios involving a variety of airway management situations and review the indications and contraindications for each device. Encourage students to focus on patient assessment findings to guide device selection.
18. What is a potential advantage of using the i-gel over the cuffed LMA in a patient with significant airway edema?
    Answer: The i-gel's non-inflatable cuff made of a thermoplastic elastomer may form a better seal around swollen tissues. The i-gel features a soft, gel-like, non-inflatable cuff that is designed to conform to the patient's perilaryngeal anatomy. In a patient with anaphylaxis and laryngeal edema, this flexible material may create a more effective seal compared to an inflatable cuff, which might not sit properly around swollen structures. Neither device offers definitive protection from aspiration, though they reduce the risk. Both devices require proper sizing.
19. A 38-year-old with severe asthma is alert, sitting upright, RR 28, HR 118, BP 148/90, SpO2 89% on room air. He has an intact gag reflex and tolerates an NPA. You apply CPAP and monitor response. Which assessment finding indicates successful CPAP application in this scenario?
    Answer: Improved SpO2 with decreased work of breathing This question tests AEMT-level knowledge of airway adjuncts and supraglottic airway devices, focusing on their indications and complications. Airway adjuncts like oropharyngeal and nasopharyngeal airways are used to maintain patency in patients with compromised airway reflexes. Supraglottic devices are used when endotracheal intubation is not feasible. In this scenario, the patient's severe asthma with fatigue requires the use of CPAP to maintain airway patency and ensure adequate ventilation. Choice D is correct because it identifies the assessment finding of improved SpO2 with decreased work of breathing in this specific context. Choice C is incorrect due to a misunderstanding of response indicators, such as interpreting new gurgling sounds as success. To improve understanding, practice scenarios involving a variety of airway management situations and review the indications and contraindications for each device. Encourage students to focus on patient assessment findings to guide device selection.
20. Given the patient's presentation, which airway adjunct is most appropriate to use as an initial intervention?
    Answer: Aggressive suctioning of the oropharynx without inserting any adjunct. In a patient with severe mid-face trauma and suspected basilar skull fracture (Le Fort III mechanism), a nasopharyngeal airway is absolutely contraindicated due to risk of intracranial placement. An oropharyngeal airway cannot be placed due to trismus (clenched jaw). A supraglottic airway requires mouth opening which is impossible with clenched jaw. The most appropriate initial intervention is aggressive suctioning to clear the blood and secretions causing gurgling sounds, followed by jaw-thrust and bag-valve mask ventilation. Advanced airway management would require paramedic-level intervention.

Start this quiz