Nremt Paramedic Level Quiz: Endotracheal Intubation And Advanced Airway Placement

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.

Question 1

1. Placing a rolled towel under the shoulders to create a sniffing position.
2. Applying cricoid pressure to both prevent aspiration and stabilize the larynx.
3. Having a second rescuer maintain manual in-line stabilization from the side. (correct answer)
4. Using a curved Macintosh blade to apply force in the vallecula away from the spine.

Explanation: The standard of care for airway management in a patient with a potential cervical spine injury is to have a dedicated provider maintain manual in-line stabilization (MILS) throughout the procedure. This technique minimizes flexion, extension, and rotation of the head and neck, reducing the risk of secondary spinal cord injury. The sniffing position is contraindicated as it requires neck extension. Cricoid pressure is no longer routinely recommended and does not stabilize the spine.

Question 2

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 3

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 4

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 5

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 6

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 7

1. The operator should focus their view primarily on the monitor screen rather than looking into the patient's mouth. (correct answer)
2. The patient must be placed in a deeper sniffing position to align the airway axes for the camera.
3. A straight Miller blade is always required to properly engage the video camera with the epiglottis.
4. The endotracheal tube is advanced without a stylet to prevent damage to the camera optics.

Explanation: The fundamental difference with video laryngoscopy (VL) is that it provides an indirect view of the glottis on a monitor. The operator must watch the screen to guide the ETT, rather than trying to achieve a direct line-of-sight view as in direct laryngoscopy (DL). Patient positioning can often be less extreme with VL, and both curved and straight blades are available. A rigid stylet is almost always recommended with VL, especially with hyper-angulated blades, to help direct the tube towards the anteriorly-located glottic opening on the screen.

Question 8

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 9

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 10

1. An apneic patient with a suspected cervical spine injury.
2. A patient with suspected basilar skull fracture and facial trauma.
3. A spontaneously breathing patient with epiglottitis and trismus. (correct answer)
4. A pediatric patient in status epilepticus.

Explanation: Blind nasotracheal intubation is a technique that can only be performed on a patient who is spontaneously breathing, as the movement of air is used to guide the tube into the trachea. It is a useful technique for patients with conditions like epiglottitis or jaw fractures that prevent oral access (trismus). It is absolutely contraindicated in apneic patients and those with suspected basilar skull fractures.

Question 11

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 12

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 13

1. The epiglottis, which is directly lifted by the tip of the blade.
2. The vallecula, the space between the base of the tongue and the epiglottis. (correct answer)
3. The thyroid cartilage, which is used as an external landmark for pressure.
4. The arytenoid cartilages, which are visualized after lifting the tongue.

Explanation: The correct technique for using a Macintosh (curved) blade involves inserting the tip of the blade into the vallecula, which is the space or groove between the base of the tongue and the epiglottis. When forward and upward pressure is applied along the axis of the handle, the hyoepiglottic ligament is stretched, which in turn lifts the epiglottis indirectly to expose the vocal cords. Directly lifting the epiglottis is the technique used for a straight (Miller) blade.

Question 14

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 15

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 16

1. To reduce the risk of vomiting and aspiration during the procedure.
2. To align the oral, pharyngeal, and tracheal axes for a direct line of sight to the glottis. (correct answer)
3. To move the tongue and soft tissues anteriorly using gravity.
4. To facilitate the insertion of a supraglottic airway as a backup device.

Explanation: The sniffing position, achieved by flexing the neck and extending the head, is the standard position for direct laryngoscopy. Its purpose is to align the oral, pharyngeal, and tracheal axes. This alignment creates the straightest possible pathway from the mouth to the glottic opening, facilitating direct visualization of the vocal cords during laryngoscopy.

Question 17

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

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

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

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.