USMLE Prep - Medical Reference Library

Severe Epistaxis — Resuscitation, TXA, and Posterior Packing

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

Synopsis:

Manage airway and hemodynamics first. Apply topical vasoconstrictor/anesthetic, direct pressure, and cautery for anterior bleeds; use tranexamic acid–soaked pledgets as adjunct. Posterior packing and ENT consultation for uncontrolled or posterior sources.

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 immunomodulation when indicated; document follow‑up and patient education.

Algorithm

  1. Apply compression and topical vasoconstrictor/anesthetic; suction clots.
  2. Visualize and cauterize anterior source if seen.
  3. If bleeding persists or posterior suspected → posterior packing device; consult ENT.
  4. Address anticoagulants/antiplatelets and reversal as appropriate; arrange follow‑up.

Clinical Synopsis & Reasoning

Manage airway and hemodynamics first. Apply topical vasoconstrictor/anesthetic, direct pressure, and cautery for anterior bleeds; use tranexamic acid–soaked pledgets as adjunct. Posterior packing and ENT consultation for uncontrolled or posterior sources.


Treatment Strategy & Disposition

Stabilize ABCs. Initiate guideline‑concordant first‑line therapy with precise dosing and continuous monitoring. Escalate to advanced or 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
Airway and hemodynamic assessmentSafetyHypoxia, hypotension
Anterior rhinoscopySource identificationKiesselbach plexus common
Coagulation profile/medsBleeding riskAnticoagulants/antiplateletsReversal where appropriate

Pharmacology

Medication/InterventionMechanismOnsetRole in TherapyLimitations
Oxymetazoline + topical anestheticVasoconstrictorMinutesFirst‑line anterior controlTachyphylaxis if prolonged
Tranexamic acid (500–1000 mg topical)AntifibrinolyticMinutesAdjunct for refractory anterior bleedsEvidence mixed; low risk
Antibiotic prophylaxis (selected)Infection preventionHoursIf posterior packing/long durationPractice varies

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. AAO‑HNSF Clinical Practice Guideline: Nosebleed (Epistaxis) (2020) — Link