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.

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.

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.

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.

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.

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.

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.

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.

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.

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.