USMLE Prep - Medical Reference Library

Epiglottitis — Adult Airway and Antibiotics

System: Otolaryngology • Reviewed: Aug 31, 2025 • Step 1Step 2Step 3

Synopsis:

Airway emergency with odynophagia, drooling, and muffled voice; secure airway early with expert help; start IV antibiotics covering H. influenzae, streptococci, and staphylococci.

Key Points

  • Stabilize ABCs; begin targeted evaluation without delaying life-saving therapy.
  • Use system-specific risk tools to guide testing and disposition.
  • Order high-yield tests first; escalate imaging when indicated.
  • Start evidence-based initial therapy and reassess frequently.

Algorithm

  1. Primary survey and vitals; IV access and monitors.
  2. Focused history/physical; identify red flags and likely etiologies.
  3. Order system-appropriate labs and imaging (see Investigations).
  4. Initiate guideline-based empiric therapy (see Pharmacology).
  5. Reassess response; arrange consultation and definitive management.

Clinical Synopsis & Reasoning

For Epiglottitis Adult Airway Antibiotics, frame the differential by acuity and pathophysiology, then align diagnostics to the leading hypotheses. Prioritize stabilization while obtaining high‑yield studies such as CBC (Baseline hematology), BMP (Electrolytes/renal). Incorporate bedside imaging and targeted labs to define severity and identify complications; synthesize results with clinical trajectory to refine the working diagnosis and disposition needs.


Treatment Strategy & Disposition

Initiate disease‑directed therapy alongside supportive care, titrating to objective response. Pharmacologic options commonly include Analgesia/Antipyretics. Use validated frameworks (e.g., Antibiotic Examples) to guide escalation and site of care. Address precipitating factors, de‑escalate empiric therapies with data, and arrange follow‑up for monitoring and risk‑factor modification; admit patients with instability, high risk of deterioration, or needs for close monitoring.


Epidemiology / Risk Factors

  • Risk factors vary by condition and patient profile

Investigations

TestRole / RationaleTypical FindingsNotes
CBCBaseline hematologyAbnormal counts
BMPElectrolytes/renalDerangements

Antibiotic Examples

RegimenNotes
Ceftriaxone + vancomycinBroad adult coverage
Ampicillin–sulbactamAlternative monotherapy
Add MRSA agent if riskTailor to local patterns

Pharmacology

MedicationMechanismOnsetRole in TherapyLimitations
CeftriaxoneCephalosporinHoursAdult epiglottitis empiricAllergy
DexamethasoneGlucocorticoidHoursAirway edema reductionHyperglycemia

Prognosis / Complications

  • Prognosis depends on severity, comorbidities, and timeliness of care

Patient Education / Counseling

  • Explain red flags and when to seek emergent care.
  • Reinforce medication adherence and follow-up plan.

Notes

Avoid oral exams with tongue depressor in unstable patients. Consider vaccination status and exposures.


References

  1. AAO-HNS Airway Emergencies — Link
  2. IDSA Head and Neck Infection Resources — Link