Clinical Practice

Difficult Airway Management

Difficult airway management is a core competency for every anesthesia provider. The updated ASA Difficult Airway Algorithm provides a systematic approach to both anticipated and unanticipated difficult airways, with emphasis on having a primary plan, backup plan, and emergency invasive airway plan before every induction. Preparation, communication, and knowing when to call for help are as important as technical skill.

Key Points

1

ASA Difficult Airway Algorithm updated 2022: emphasizes cognitive aids, team communication, and early supraglottic airway use

2

Mallampati, thyromental distance, neck mobility, and mouth opening are imperfect but useful screening tools

3

Cannot-intubate-cannot-oxygenate (CICO): emergency front-of-neck access (cricothyrotomy) is the final rescue

4

Video laryngoscopy should be considered first-line for anticipated difficult intubation

5

Awake intubation with flexible bronchoscope remains the gold standard for predicted difficult airways

Clinical Pearl

When video laryngoscopy provides a good glottic view but the tube won't pass, use a bougie rather than re-attempting with more force. The most common cause of failed intubation with video laryngoscopy is difficulty with tube delivery, not visualization.

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References

[1]2022 ASA Practice Guidelines for Difficult Airway Management.Anesthesiology
[2]Predicting Difficult Intubation: A Systematic Review.British Journal of Anaesthesia
[3]Front-of-Neck Access in Cannot Intubate Cannot Oxygenate.Anaesthesia

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