USMLE Prep - Medical Reference Library

Epiglottitis (Adults) — Airway Strategy, Antibiotics, and ICU Monitoring

System: Otolaryngology • Reviewed: Sep 1, 2025 • Step 1Step 2Step 3

Synopsis:

Rapidly progressive sore throat, odynophagia, drooling, muffled voice, and stridor. Avoid agitation; secure the airway with awake fiberoptic technique when needed. Give broad IV antibiotics and steroids as adjunct; admit to ICU for monitoring.

Key Points

  • Use the highest‑yield diagnostic test early; do not let testing delay time‑critical therapy.
  • Set objective targets (hemodynamic, neurologic, respiratory) and reassess frequently.
  • Plan definitive source control or disease‑specific therapy when indicated; document follow‑up and patient education.

Algorithm

  1. Keep patient upright and calm; avoid manipulating airway outside controlled setting.
  2. Call ENT/anesthesia; prepare for awake fiberoptic intubation in OR/ICU if signs of obstruction.
  3. Start IV antibiotics (ceftriaxone + vancomycin); give steroids as adjunct.
  4. Admit to ICU; monitor closely for airway deterioration; step down when improved.

Clinical Synopsis & Reasoning

Rapidly progressive sore throat, odynophagia, drooling, muffled voice, and stridor. Avoid agitation; secure the airway with awake fiberoptic technique when needed. Give broad IV antibiotics and steroids as adjunct; admit to ICU for monitoring.


Treatment Strategy & Disposition

Stabilize ABCs. Initiate guideline‑concordant first‑line therapy with precise dosing and continuous monitoring. Escalate to advanced/procedural interventions based on explicit failure criteria. Define ICU, step‑down, and ward disposition triggers; involve specialty teams early.


Epidemiology / Risk Factors

  • Risk varies by comorbidity and precipitants; see citations for condition‑specific data.

Investigations

TestRole / RationaleTypical FindingsNotes
Flexible nasolaryngoscopy (controlled setting)DiagnosisEdematous, cherry‑red epiglottisDo not agitate/lay flat
Lateral neck radiograph (adjunct)SupportiveThumb signAvoid delay
Blood/throat cultures (selected)Pathogen IDH. influenzae, streptococci, staphylococci

Pharmacology

Medication/InterventionMechanismOnsetRole in TherapyLimitations
Ceftriaxone + Vancomycin (empiric)AntibioticsHoursCover typical adult pathogensTailor to cultures
Dexamethasone (adjunct)GlucocorticoidHoursReduce edemaEvidence mixed
Nebulized epinephrine (selected)VasoconstrictorMinutesTemporary improvementNot definitive

Prognosis / Complications

  • Outcome depends on timeliness of diagnosis and definitive therapy; monitor for complications.

Patient Education / Counseling

  • Provide red‑flag education, adherence guidance, and explicit return precautions; arrange timely specialty follow‑up.

References

  1. ENT/critical‑care reviews on adult epiglottitis — Link