1 Advanced Airway Assessment and Preparation

Assess airway difficulty and patient risk

Advanced airway management begins with anticipating difficulty and planning before inserting an airway device. Assess the likelihood of difficulty with oxygenation, ventilation, and intubation, as well as the available rescue options. A patient may have an airway that appears straightforward to view yet still be at high risk of rapid desaturation, hypotension, aspiration, or cardiac arrest.

Assess both Anatomical difficulty and Physiological risk. A difficult-airway decision should consider possible difficult laryngoscopy or intubation, difficult face-mask or supraglottic ventilation, aspiration, and rapid desaturation—not just the expected laryngoscopic view.

The approach here focuses on adults. Pediatric and specialty airways require age- and context-specific protocols. Use current local protocols and appropriately trained clinicians.

Review history, examination, and context

Gather relevant history, including previous difficult mask ventilation or intubation, airway surgery or radiation, head-and-neck tumors, trauma, restricted neck movement, obstructive sleep apnea, and other relevant medical conditions. Review prior airway records when available and time permits.

On examination, look for limited mouth opening or jaw movement, prominent or damaged teeth, a small or receding jaw, a large tongue, facial or neck swelling, restricted neck movement, and altered upper-airway anatomy. No single bedside sign reliably rules out difficulty, so interpret findings together.

Assess oxygenation, respiratory effort, hemodynamics, mental status, aspiration risk, and how well the patient is likely to tolerate apnea. Consider whether correcting reversible problems or briefly delaying an elective intervention would improve safety.

Account for the circumstances in which the airway will be managed: patient cooperation, positioning limits, staffing, lighting, access to the patient, and whether skilled help or a more controlled setting is available.

Agree on primary and rescue plans

Before starting, state the intended approach and agree on what will trigger a change of plan. Select the primary method according to the patient and the operator’s competence, and make clear how the team will respond if the first approach fails.

• Plan A: The primary method of securing the airway.

• Plan B: The next approach to restore oxygenation if the first attempt fails, such as optimized mask ventilation or a supraglottic airway.

• Plan C: The next oxygenation strategy if ventilation remains inadequate, including calling for additional expertise and following the local difficult-airway algorithm.

• Plan D: Emergency front-of-neck access for a cannot-intubate, cannot-oxygenate (CICO) situation. This is for trained clinicians acting under the applicable protocol.

Limit repeated attempts that are not improving conditions. Reassess oxygenation, positioning, device, operator, and technique. Where appropriate and feasible, consider an awake intubation pathway when difficult intubation is anticipated together with concern about difficult ventilation, aspiration, or rapid desaturation. This decision depends on the full clinical situation and available expertise.

Prepare the team and equipment

Use a brief checklist or verbal cross-check. Assign roles such as airway operator, assistant, medication clinician, and monitor or timekeeper, and identify who will call for help. Share the primary and rescue plans so every team member knows when and how to act.

Check the equipment before induction when circumstances allow:

• Oxygen source and selected preoxygenation interface.

• Suction switched on and immediately reachable, with an appropriate catheter.

• Bag-mask device, mask sizes, and basic airway adjuncts.

• Chosen laryngoscope and blade; a video laryngoscope when indicated, available, and familiar to the operator.

• Appropriate tracheal tube, planned stylet or bougie, cuff syringe, and tube-securing supplies.

• Supraglottic airway device for rescue oxygenation.

• Monitors, including pulse oximetry, ECG, and blood pressure; waveform capnography available for ventilation monitoring and confirmation after intubation.

• Emergency front-of-neck airway equipment where indicated and where personnel are trained to use it.

Check that equipment works, the needed supplies fit together, and backup oxygen and suction are available. Prepare medications and vascular access as appropriate to the clinical plan, and anticipate hemodynamic deterioration. Preparation includes suitable equipment, skilled assistance, preoxygenation, and supplemental oxygen available throughout airway management.

Position and preoxygenate

Position the patient to improve airway access and oxygen reserve. For many adults, the semi-Fowler position, with the head and torso elevated, is useful. In patients with obesity, ramping may help align the ear with the sternal notch; adjust the bed and head position to the patient’s anatomy. Maintain spinal precautions when indicated while adapting the position as safely as possible.

Use Preoxygenation with an effective, well-fitting interface and an oxygen strategy suited to the patient. Conditional recommendations for rapid-sequence intubation include head-and-torso inclination, noninvasive positive-pressure ventilation for patients with severe hypoxemia, and high-flow nasal oxygen when laryngoscopy is expected to be challenging. Apply clinical judgment, especially if an interface is poorly tolerated or aspiration risk is a concern.

Pause and reassess before intervention

Immediately before intervention, confirm patient identity and indication, monitoring, oxygen delivery, suction, position, equipment function, team roles, and the agreed rescue plan. Reassess the patient if conditions change.

If oxygenation or hemodynamics worsen, prioritize stabilization and oxygenation over continuing with the original approach. Reassessment and rescue planning remain important throughout airway management.