NREMT Paramedic Level Quiz: Endotracheal Intubation And Advanced Airway Placement
20 questions · exam conditions
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Endotracheal Intubation And Advanced Airway PlacementQuestion 1 of 20

After two failed intubation attempts, SpO2 is 82%; bag-mask ventilation is difficult. Next step?

Awaken the patient if possible
Surgical cricothyrotomy now
Repeat laryngoscopy and bougie
Insert supraglottic airway now
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NREMT Paramedic Level Quiz

NREMT Paramedic Level Quiz: Endotracheal Intubation And Advanced Airway Placement

Practice Endotracheal Intubation And Advanced Airway Placement in NREMT Paramedic Level with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

What this quiz covers

This quiz focuses on Endotracheal Intubation And Advanced Airway Placement, giving you a quick way to practice the rules, question types, and explanations that matter most for NREMT Paramedic Level.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

All questions

Question 1

After two failed intubation attempts, SpO2 is 82%; bag-mask ventilation is difficult. Next step?

  1. Awaken the patient if possible
  2. Surgical cricothyrotomy now
  3. Repeat laryngoscopy and bougie
  4. Insert supraglottic airway now (correct answer)
Explanation: After failed intubation with difficult bag-mask ventilation, you need a rescue airway before invasive airway; inserting a supraglottic airway provides oxygenation while maintaining the option to wake or escalate. Surgical cricothyrotomy is tempting but should wait until supraglottic ventilation also fails, because it is invasive and irreversible.

Question 2

A patient with a total laryngectomy has apnea. What is the preferred airway device?

  1. Supraglottic airway insertion
  2. Endotracheal tube via stoma (correct answer)
  3. Oral endotracheal intubation
  4. Nasopharyngeal airway device
Explanation: In a total laryngectomy, the airway is separated from the mouth and nose, so ventilation must go directly through the stoma. An endotracheal tube placed through the stoma is the preferred device for apnea. A supraglottic airway is tempting but useless because it cannot reach the trachea past the stoma.

Question 3

An 8.0 ETT has been taped at 28 cm at the lips. What finding most strongly indicates a right mainstem intubation?

  1. Breath sounds absent on left (correct answer)
  2. Bilateral chest rise and fall
  3. End-tidal CO2 waveform present
  4. Epigastric sounds are absent
Explanation: A tube advanced too far usually enters the right mainstem bronchus because it is wider and more vertical than the left. Air then goes to the right lung only, so breath sounds are absent or markedly decreased over the left chest. The tempting wrong answer is bilateral chest rise and fall, but that can occur with transmitted movement and is not specific. End-tidal CO2 and absent epigastric sounds confirm tracheal placement, not mainstem placement.

Question 4

During cardiac arrest, an intubated patient's ETCO2 is 8 mmHg with a waveform. Best interpretation?

  1. Esophageal; reintubate now
  2. Tracheal; perfusion very low (correct answer)
  3. Capnometer needs recalibration
  4. Cuff leak around the trachea
Explanation: An ETCO2 of 8 mmHg with a normal waveform means gas is coming from the lungs, so the tube is tracheal. In cardiac arrest, low cardiac output delivers very little CO2 to the alveoli, which makes capnography low. The tempting error is esophageal placement, but that would produce no true waveform, not a low but present one.

Question 5

A tube's cuff pressure reads 45 cm H2O. Which complication is most likely?

  1. Cuff herniation over the tip
  2. Inadequate seal and aspiration
  3. Tracheal ischemia and stenosis (correct answer)
  4. Vocal cord paralysis acutely
Explanation: Cuff pressure of 45 cm H2O is well above the 20-25 cm H2O target, and the main consequence is compression of tracheal mucosa, causing ischemia that can progress to stenosis. The tempting wrong answer is inadequate seal and aspiration, but high cuff pressure does the opposite: it seals tightly while injuring the airway wall. Vocal cord paralysis and cuff herniation are not the expected acute complications of overinflation.

Question 6

A patient was successfully intubated using rocuronium and etomidate. The tube is secured and placement is confirmed. Ten minutes later, the patient, who remains paralyzed, develops tachycardia to 130 bpm and hypertension to 180/100 mmHg.

What is the most likely cause of these vital sign changes and what is the most appropriate treatment?

  1. Inadequate sedation and analgesia; administer a benzodiazepine or opioid. (correct answer)
  2. A hypertensive response to the ETT; administer a beta-blocker like labetalol.
  3. Malignant hyperthermia from the paralytic; begin rapid cooling measures.
  4. Autonomic dysreflexia from a noxious stimulus; perform a full secondary survey.
Explanation: Paralytics like rocuronium induce muscle paralysis but provide no sedation or analgesia. The patient is likely awake and aware but unable to move, and the noxious stimulus of the ETT is causing a significant sympathetic response (tachycardia and hypertension). The primary treatment is to provide adequate sedation and analgesia with agents like fentanyl or midazolam.

Question 7

Following endotracheal intubation of a 50-year-old patient in cardiac arrest, you are assessing for proper tube placement. You visualized the tube passing through the vocal cords, you note bilateral chest rise, and you auscultate equal breath sounds over both lungs.

Which of the following methods provides the most definitive, real-time confirmation of correct endotracheal tube placement?

  1. A sustained color change on a colorimetric capnometer.
  2. The presence of condensation inside the endotracheal tube.
  3. Continuous waveform capnography showing a consistent waveform. (correct answer)
  4. Auscultation of clear, equal breath sounds in all lung fields.
Explanation: Continuous waveform capnography is the gold standard for confirming and continuously monitoring endotracheal tube placement. It provides a real-time measurement of exhaled CO2 with a characteristic waveform, which is the most reliable indicator of tracheal placement. Auscultation, chest rise, and condensation can all be misleading and are considered secondary confirmation methods. A colorimetric device provides a qualitative assessment but is less definitive than a quantitative waveform.

Question 8

An adult patient who was successfully intubated in the field after a drug overdose is being ventilated via BVM. Fifteen minutes into transport, the high-pressure alarm on the monitor begins to sound, the patient's SpO2 drops to 88%, and it becomes significantly more difficult to ventilate.

According to the DOPE mnemonic for troubleshooting an intubated patient, what is the first potential cause the paramedic should investigate?

  1. Displacement of the endotracheal tube. (correct answer)
  2. Obstruction of the endotracheal tube.
  3. Pneumothorax development.
  4. Equipment failure of the BVM or oxygen source.
Explanation: The DOPE mnemonic (Displacement, Obstruction, Pneumothorax, Equipment failure) is a standard tool for troubleshooting a sudden decompensation in an intubated patient. The mnemonic is typically followed in order. The most common and easily correctable life-threatening issue is tube displacement, which should be ruled out first by re-verifying tube depth, auscultating, and checking capnography.

Question 9

You have just intubated a 68-year-old, 100 kg male patient. Upon auscultation, you hear clear and equal breath sounds over the right chest but diminished sounds over the left chest. You also hear gurgling over the epigastrium.

Based on these findings, what is the most likely cause and the most appropriate immediate action?

  1. Right mainstem intubation; deflate the cuff and withdraw the tube 2-3 cm.
  2. Esophageal intubation; immediately extubate and resume BVM ventilation. (correct answer)
  3. Left-sided tension pneumothorax; perform immediate needle decompression.
  4. Bronchoconstriction; administer an in-line nebulized bronchodilator.
Explanation: The combination of diminished left-sided breath sounds and, critically, gurgling over the epigastrium is highly indicative of an esophageal intubation. Air is being forced into the stomach, and the breath sounds heard over the right chest are likely transmitted sounds. This is a critical life threat that requires immediate extubation and re-oxygenation with a bag-valve-mask before another attempt is made.

Question 10

A 6-year-old child weighing 22 kg is in respiratory failure and requires endotracheal intubation.

Using standard pediatric formulas, which is the most appropriate size for a cuffed endotracheal tube for this patient?

  1. 4.0 mm
  2. 4.5 mm
  3. 5.0 mm (correct answer)
  4. 5.5 mm
Explanation: The standard PALS formula for estimating the size of a cuffed endotracheal tube in a pediatric patient is (Age in years / 4) + 3.5. For a 6-year-old child, this calculation is (6 / 4) + 3.5 = 1.5 + 3.5 = 5.0 mm. This formula accounts for the smaller internal diameter needed when using a cuffed tube compared to an uncuffed tube. Always have tubes 0.5 mm smaller and larger available as backup options.

Question 11

You are preparing to intubate a 45-year-old male with end-stage renal disease who missed his last two dialysis appointments. His ECG shows peaked T-waves. He is obtunded and requires a definitive airway.

Which neuromuscular blocking agent should be avoided in this patient?

  1. Rocuronium
  2. Vecuronium
  3. Succinylcholine (correct answer)
  4. Cisatracurium
Explanation: Succinylcholine is a depolarizing neuromuscular blocker that causes a transient release of potassium from muscle cells, raising serum potassium levels by about 0.5 mEq/L. In patients with pre-existing hyperkalemia, such as those with renal failure, this increase can be fatal by inducing cardiac arrhythmias or arrest. The patient's peaked T-waves are a classic sign of hyperkalemia. Rocuronium and vecuronium are non-depolarizing agents and are safe alternatives.

Question 12

During a direct laryngoscopy attempt on an adult with an anterior airway, you are only able to visualize the epiglottis and the posterior arytenoids (a Cormack-Lehane Grade III view).

What is the most appropriate next action to facilitate intubation?

  1. Withdraw the laryngoscope and switch to a larger blade to get a better view.
  2. Apply firm cricoid pressure to bring the glottic opening into view.
  3. Insert an endotracheal tube introducer (bougie) blindly past the epiglottis. (correct answer)
  4. Abandon the attempt and immediately proceed to a surgical airway.
Explanation: A Grade III view is a common indication for using an endotracheal tube introducer (bougie). The bougie can be advanced under the epiglottis into the trachea. The operator can often feel the device passing over the tracheal rings ("tracheal clicks") or meeting resistance at the carina ("hold up"), confirming tracheal placement. The ETT is then passed over the bougie. This is a standard technique for difficult airways and should be attempted before abandoning the oral route.

Question 13

You are intubating an adult patient and successfully visualize the vocal cords. As you advance the 7.5 mm endotracheal tube, you meet significant resistance and are unable to advance it past the cords.

What is the most appropriate next step?

  1. Apply more force to push the tube past the point of resistance.
  2. Remove the 7.5 mm tube and immediately reattempt with a 6.0 mm tube.
  3. Leave the laryngoscope in place, withdraw the tube, and try again with a bougie.
  4. Rotate the tube 90 degrees counter-clockwise to align the bevel with the cords. (correct answer)
Explanation: When the ETT gets held up at the vocal cords, it is often because the leading edge of the tube's bevel is catching on the anterior commissure of the vocal cords. A common and effective technique is to withdraw the tube slightly (1-2 cm), rotate it 90 degrees counter-clockwise (so the bevel faces posteriorly or sideways), and then readvance. This maneuver changes the tube's profile and often allows it to pass smoothly through the cords. If this fails, switching to a smaller tube size is the next logical step.

Question 14

After two failed attempts at endotracheal intubation on an apneic, obese patient, their oxygen saturation has dropped to 84% despite ongoing BVM ventilations between attempts. You are having difficulty maintaining a mask seal.

What is the most appropriate next step in managing this patient's airway?

  1. Make a third and final attempt at intubation using a different laryngoscope blade.
  2. Insert a supraglottic airway to re-establish oxygenation and ventilation. (correct answer)
  3. Immediately proceed with a surgical cricothyrotomy as the airway is lost.
  4. Request a second paramedic to attempt intubation while you maintain the mask seal.
Explanation: After failed intubation attempts, the primary goal is to re-establish oxygenation. A supraglottic airway (such as an LMA or King LT) is a crucial rescue device in a failed airway algorithm. It can typically be placed quickly and without direct visualization, providing an effective means of ventilation when BVM is difficult and intubation has failed. Proceeding to a surgical airway is premature until less invasive rescue devices have been attempted. Making another intubation attempt on a hypoxic patient is dangerous.

Question 15

You are treating a patient with massive maxillofacial trauma from an industrial accident. The patient has significant oral hemorrhage and anatomical disruption, making oral intubation impossible. You are unable to ventilate the patient effectively with a BVM.

Given this "can't intubate, can't ventilate" scenario, what is the most appropriate next step in airway management?

  1. Attempt a blind nasotracheal intubation.
  2. Place a supraglottic airway and hope for a seal.
  3. Perform an immediate surgical cricothyrotomy. (correct answer)
  4. Apply a CPAP mask to stent the airway open.
Explanation: This scenario represents a classic indication for a surgical airway. The patient cannot be intubated orally due to trauma, and bag-mask ventilation is ineffective. This is a "can't intubate, can't ventilate" situation. Nasotracheal intubation is contraindicated in severe mid-face trauma. A supraglottic airway is unlikely to be effective or may be dislodged by the hemorrhage and disrupted anatomy. The definitive and life-saving procedure is a surgical cricothyrotomy.

Question 16

You are preparing for an RSI. Your patient is a 90 kg adult with severe respiratory distress secondary to pneumonia. To maximize the duration of safe apnea, you begin pre-oxygenation.

In addition to bag-mask ventilation with 100% O2, which technique is most effective for extending the time until desaturation occurs during the intubation attempt?

  1. Positioning the patient completely supine to reduce metabolic demand.
  2. Administering the paralytic agent two minutes before the induction agent.
  3. Performing five forceful ventilations immediately before laryngoscopy.
  4. Applying a nasal cannula at 15 L/min throughout the pre-oxygenation and intubation attempt. (correct answer)
Explanation: Pre-oxygenation before RSI aims to maximize oxygen reserves in the lungs, blood, and tissues to extend safe apnea time during intubation. The goal is to replace nitrogen in the functional residual capacity with oxygen, creating a larger oxygen reservoir. Apneic oxygenation using high-flow nasal cannula (option D) is the most effective adjunct technique. By delivering 15 L/min of oxygen through the nasal cannula during pre-oxygenation and continuing it throughout the intubation attempt, you create passive flow of oxygen into the alveoli even during apnea. This technique can extend safe apnea time by several minutes, particularly valuable in patients like this one with respiratory compromise who may desaturate quickly. Option A is incorrect because the supine position actually increases oxygen consumption and reduces functional residual capacity, shortening safe apnea time. The optimal position is reverse Trendelenburg or sitting upright. Option B describes an inappropriate medication sequence. Paralytics should follow induction agents in RSI, not precede them by two minutes. This timing would create an awake but paralyzed patient, which is dangerous and doesn't improve oxygenation. Option C refers to an outdated practice. Forceful ventilations risk gastric insufflation and aspiration, and aggressive bag-mask ventilation immediately before laryngoscopy can worsen visualization due to gastric distension. For NREMT success, remember that apneic oxygenation with nasal cannula is now standard practice during RSI. Look for questions testing modern airway management techniques versus outdated practices—the exam often includes these evidence-based updates.

Question 17

You are managing an intubated patient with severe asthma. The ventilator is alarming and the quantitative capnography waveform displays a prolonged phase II and an upslope to phase III, resembling a shark fin.

This waveform is most indicative of what underlying condition?

  1. Inadequate neuromuscular blockade, causing the patient to breathe against the ventilator.
  2. Displacement of the endotracheal tube into the right mainstem bronchus.
  3. Severe bronchoconstriction limiting expiratory airflow. (correct answer)
  4. Hypoventilation due to an inappropriately low respiratory rate.
Explanation: The characteristic "shark fin" or sloped appearance of the capnography waveform is a classic sign of bronchoconstriction, as seen in asthma or COPD. The upstroke is slowed and sloped because of uneven and obstructed emptying of the alveoli. This finding should prompt the paramedic to treat the bronchospasm, typically with in-line bronchodilators.

Question 18

You are assessing a patient in a skilled nursing facility with a tracheostomy tube who is in severe respiratory distress. You are unable to pass a suction catheter down the tube and the patient's oxygen saturation is rapidly declining.

What is the most appropriate immediate intervention for this patient?

  1. Administer high-flow oxygen via a non-rebreather mask over the stoma.
  2. Remove the tracheostomy tube and attempt to ventilate the stoma with a pediatric BVM. (correct answer)
  3. Attempt to orally intubate the patient while leaving the tracheostomy tube in place.
  4. Perform a needle cricothyrotomy above the existing stoma site.
Explanation: The inability to pass a suction catheter through a tracheostomy tube in a patient in respiratory distress is a critical sign of a complete obstruction, likely from a mucus plug. The definitive immediate action is to remove the existing tube, clear the stoma if necessary, and attempt to ventilate the patient directly over the stoma, often using a pediatric mask to achieve a seal. If this fails, oral intubation would be the next step.

Question 19

An intubated and ventilated trauma patient develops progressive subcutaneous emphysema in the neck and upper chest, decreased breath sounds on the right side, and a blood pressure of 80/60 mmHg with a heart rate of 140 bpm. The patient's trachea appears to be shifted to the left.

These findings are most consistent with which acute complication of positive pressure ventilation?

  1. Endobronchial intubation into the left mainstem.
  2. Acute pulmonary embolism from traumatic injuries.
  3. Dislodgement of the endotracheal tube into the hypopharynx.
  4. Right-sided tension pneumothorax secondary to barotrauma. (correct answer)
Explanation: When you encounter a ventilated trauma patient with respiratory distress and hemodynamic instability, systematically evaluate the classic triad of findings that point to specific complications. The combination of subcutaneous emphysema, unilateral decreased breath sounds, tracheal deviation away from the affected side, and hemodynamic compromise (hypotension and tachycardia) creates the textbook presentation of tension pneumothorax. The positive pressure ventilation mentioned in the question stem is the key mechanism - barotrauma from mechanical ventilation can rupture alveoli or worsen existing pleural injuries from trauma. Air accumulates in the pleural space faster than it can escape, compressing the lung and shifting mediastinal structures away from the affected side, which impedes venous return and causes the cardiovascular collapse. Option A (endobronchial intubation) would cause decreased sounds on the left side, not right, and wouldn't produce subcutaneous emphysema or tracheal shift. Option B (pulmonary embolism) doesn't explain the unilateral breath sounds, emphysema, or tracheal deviation - it typically presents with bilateral findings. Option C (tube dislodgement) would cause bilateral decreased ventilation and wouldn't create the emphysema or anatomical shifts described. The correct answer is D because tension pneumothorax from barotrauma explains every finding: right-sided lung collapse (decreased breath sounds), air escaping into tissues (subcutaneous emphysema), mediastinal shift (tracheal deviation), and cardiovascular compromise from impaired venous return. Remember: Tracheal deviation always points away from a tension pneumothorax but toward atelectasis or massive pleural effusion. This directional relationship is frequently tested on NREMT exams.

Question 20

You are preparing to perform rapid sequence intubation (RSI) on a 78-year-old male who fell from a ladder. He has a GCS of 6, bilateral femur fractures, and a blood pressure of 88/50 mmHg. His SpO2 is 91% on a non-rebreather mask.

Given the patient's hemodynamic instability, which induction agent is the most appropriate choice for this procedure?

  1. Propofol, because of its rapid onset and short duration of action.
  2. Etomidate, because it is generally considered hemodynamically neutral.
  3. Midazolam, because it provides excellent sedation and amnesia.
  4. Ketamine, because it supports blood pressure through sympathomimetic effects. (correct answer)
Explanation: The correct answer is Ketamine. This patient is hypotensive, and ketamine is a dissociative anesthetic that often increases heart rate and blood pressure due to its sympathomimetic properties, making it the ideal choice in hemodynamically unstable patients. Propofol and Midazolam can cause significant hypotension, which would be detrimental. While Etomidate is more hemodynamically neutral than propofol, it can still cause a drop in blood pressure and has the side effect of adrenal suppression, making ketamine the superior choice in this specific shock state.