Difficult Airway Anticipation

Why This Is Hard

Failed airway disasters often start as “this should be easy.” On the truck you do not get a full ENT workup. You get obesity, blood, vomit, trauma, limited neck motion, and a family screaming. Anticipation is a paramedic skill equal to intubation technique.

Goal: every high-risk airway patient gets a Plan A / Plan B / Plan C spoken out loud before you commit — including pure oxygenation rescue if intubation fails.

Street Predictors (LEMON-style Education)

• Look externally: beard, facial trauma, short neck, small mandible, large tongue, obesity, pregnancy.
• Evaluate 3-3-2 teaching idea: limited mouth opening, short hyoid–chin distance, high larynx — hard to assess perfectly in the field, but extreme limits matter.
• Mallampati / mouth opening: if they cannot open enough for an adjunct, assume hard path.
• Obstruction / obesity: angioedema, abscess, foreign body, OSA body habitus.
• Neck mobility: C-collar, kyphosis, rheumatoid history, trauma.

Scene and History Clues

• Prior difficult intubation, radiation, tracheostomy, known cancer.
• Stridor, drooling, tripod position — do not force supine casually.
• Full stomach, GI bleed, drowning — high aspiration risk.
• Combative hypoxia — sedation/airway plan must include failed path.

Plan Before You Attempt

1. Optimize basics first — positioning, suction ready, two-person BVM, adjuncts, high-flow O₂, waveform capnography staged.
2. Assign roles — who bags, who suctions, who prepares backup device, who times attempts.
3. Limit attempts per protocol culture — each failed look worsens swelling and hypoxia.
4. Rescue early — supraglottic, better BVM, call for help/intercept; CICO pathway only as trained and authorized.
5. Document predictors and plan — ED needs to know this was anticipated.

Key Points for Paramedics

• Difficult airway is often a system problem (preparation), not only a laryngoscope skill problem.
• If BVM is difficult, assume advanced airway will also be difficult until proven otherwise.
• Apneic patients still need continuous oxygenation strategy — do not “hope the tube will fix it.”
• This lesson does not teach RSI drug doses or surgical technique — those belong to protocol and hands-on training.

Field Pitfalls

• First look with no suction and no backup device open.
• Multiple attempts without re-oxygenating between tries.
• Ignoring predictors because “we always get the tube.”
• Failing to reassess after every patient move (displacement risk rises with difficult anatomy).

Practice

On the next three airway-capable calls, force one sentence: “Predictors I see… Plan A is… Plan B is…” Related: Failed Oxygenation: DOPE-S, Effective BVM Ventilation.

Sources & Further Study

• Difficult airway educational frameworks (LEMON and variants); your RSI/difficult airway protocol.