A 42-year-old woman sits upright on the small rural emergency department stretcher, her breath audible across the room and sweat darkening the collar of her shirt. She has progressive tongue and neck swelling after a bee sting and now answers in one-word phrases. The nearest tertiary center is 90 minutes away, the video laryngoscope battery is uncertain, and her oxygen saturation is falling despite a nonrebreather mask. The airway team reaches for equipment—but the decisive move has not yet been made.

— What’s your move? Read on.

Before you read
  • Which airway plan should be executed before giving paralysis?
  • When should a surgical airway be prepared rather than merely discussed?

When to Think of It

Enter a bariatric airway pathway for obesity plus hypoxemia, airway edema, respiratory distress, altered mental status, or anticipated deterioration. Look specifically for inability to lie flat, limited neck extension, large tongue, redundant pharyngeal tissue, short thick neck, obstructive sleep apnea, prior difficult intubation, and poor dentition. Do not wait for complete obstruction: stridor, muffled voice, drooling, inability to handle secretions, or rapidly worsening work of breathing are late warning signs.

Sick or Not Sick

Sick versus not sick is the question: Can this patient maintain oxygenation and ventilation while you assemble a controlled airway? The call that matters most is whether to proceed with early definitive airway control while the patient is still oxygenating, rather than waiting for exhaustion or complete obstruction.

The First Fifteen Minutes

  • Call for the most experienced airway operator, respiratory therapy, nursing help, and transport/medical control early; bring the difficult-airway cart, bougie, flexible scope if available, and front-of-neck access kit.
  • Sit the patient in a head-elevated/ramped position: external auditory canal aligned horizontally with the sternal notch; use blankets or a commercial ramp.
  • Preoxygenate with a tight-fitting nonrebreather at 15 L/min plus nasal cannula at 15 L/min; if inadequate, use CPAP/NIV with a PEEP of 5–10 cm H₂O because positive pressure recruits collapsed obese-lung units.
  • If agitation prevents preoxygenation and the patient is still spontaneously breathing, ketamine 0.5–1 mg/kg IV, titrated in small increments, can facilitate tolerance while preserving respiratory drive; verify dosing scalar and local protocol in severe obesity.
  • If the airway is threatened but oxygenation is currently adequate, proceed with a planned RSI: etomidate 0.3 mg/kg IV for induction because it usually preserves blood pressure, followed immediately by rocuronium 1.2 mg/kg IV for rapid, reliable paralysis. Dosing in obesity varies by drug and weight scalar; confirm with an institutional or Lexicomp/UpToDate reference if uncertain.
  • Use video laryngoscopy as the first attempt when available, with a bougie immediately in hand; limit attempts and reoxygenate between them.
  • If intubation fails but oxygenation remains possible, insert a second-generation supraglottic airway; it provides a bridge, not a definitive solution.
  • If “can’t intubate, can’t oxygenate,” perform emergency scalpel-bougie-tube cricothyrotomy immediately; do not continue repeated oral attempts.

Definitive Care & Disposition

Confirm tube placement with continuous waveform capnography, bilateral chest movement, and imaging when appropriate. Secure the tube carefully because neck anatomy and transport movement increase displacement risk. Use lung-protective ventilation based on predicted body weight, not actual body weight; anticipate higher PEEP requirements and rapid derecruitment. Transfer to an ICU-capable center after stabilization, with a clinician capable of managing a difficult reintubation during transport. If the airway is not yet secured and edema is progressing, do not send the patient in a routine ground transfer.

How This One Kills

The fatal error is repeated laryngoscopy after oxygenation has failed. In the bariatric patient, desaturation can become profound within seconds, while mask ventilation, supraglottic placement, and front-of-neck access may all be more difficult than expected.
The Differential — What Else Looks Like This
  • Angioedema — isolated lip/tongue swelling without a toxic appearance may suggest a noninfectious process; confusing it with simple asthma delays a controlled airway.
  • Anaphylaxis — hypotension, urticaria, wheeze, or GI symptoms point to systemic allergic reaction; missing it delays epinephrine while the airway deteriorates.
  • Deep neck infection — fever, unilateral swelling, trismus, or a “hot potato” voice suggests a distorted infected airway; routine RSI can convert partial obstruction into complete obstruction.
  • Obesity hypoventilation/OSA exacerbation — hypercapnia with preserved airway anatomy may improve with NIV; premature intubation exposes a difficult airway without first correcting reversible physiology.

The Second-Day Story

A patient may deny dyspnea while quietly tiring, especially with chronic hypercapnia and blunted ventilatory response. Oxygen saturation can appear acceptable on supplemental oxygen while ventilation worsens, and hypotension may be the first obvious sign of peri-intubation collapse. Track mental status, respiratory rate and effort, speech, end-tidal CO₂, and ability to lie back—not pulse oximetry alone.
Back to Our Patient
Back to our 42-year-old woman: progressive tongue swelling, one-word speech, and falling oxygen saturation identify a sick patient with a threatened, rapidly worsening airway. She is placed upright and ramped, receives immediate IM epinephrine for anaphylaxis, and is preoxygenated with nonrebreather plus nasal cannula while the rural team prepares video laryngoscopy, bougie, supraglottic airway, and cricothyrotomy equipment. Because she is still oxygenating but deteriorating, the experienced clinician performs planned RSI with weight-appropriate etomidate and rocuronium, secures the tube with waveform capnography, and transfers her intubated to an ICU-capable center with a documented difficult-airway plan.
Patient Presentation to Attending
How you’d present this patient on the floor — tight, pertinent positives and negatives, no rambling
“This is a 42-year-old woman with obesity presenting with rapidly progressive tongue and neck swelling after a bee sting, now with dyspnea, muffled speech, and one-word answers. She has worsening stridor and difficulty handling secretions, with oxygen saturation falling despite a nonrebreather, but she remains conscious and has a pulse. There is visible tongue edema and a short thick neck; she has no focal wheezing or trauma. I’m concerned for impending airway obstruction from anaphylaxis in a predicted difficult bariatric airway. I’ve given IM epinephrine, placed her upright and ramped, and am preoxygenating with nonrebreather plus nasal cannula. We are proceeding with controlled RSI using video laryngoscopy and a bougie, with a supraglottic airway and scalpel-bougie cricothyrotomy immediately available, followed by ICU transfer.”

Study Directive

  • Practice building a ramp from blankets and demonstrate external auditory canal–sternal notch alignment.
  • Perform three timed preoxygenation drills using nonrebreather, nasal cannula, and NIV.
  • Review your institution’s RSI dosing scalars for etomidate, ketamine, rocuronium, and sugammadex in severe obesity.
  • Complete a simulated failed-airway sequence: failed laryngoscopy → supraglottic airway → can’t-intubate/can’t-oxygenate cricothyrotomy.
  • Write a transport airway checklist for a rural patient with limited rescue capability.

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