USMLE Prep - Medical Reference Library

Massive Hemoptysis — Airway Isolation, Localization, and Bronchial Artery Embolization

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

Synopsis:

Life‑threatening bleeding (>100–200 mL/h or any bleed causing instability/respiratory failure). Prioritize airway and bleeding‑lung isolation, position bleeding side down, localize with bronchoscopy/CTA, and arrange bronchial artery embolization; treat the underlying cause.

Key Points

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

Algorithm

  1. Call for help; high‑flow O2; position bleeding lung down; suction with large ETT ≥8.5.
  2. Localize source via bronchoscopy; consider endobronchial blocker/iced saline/epinephrine topically.
  3. Obtain CTA chest arterial phase when stable; correct coagulopathy; prepare for IR.
  4. Proceed to bronchial artery embolization; manage underlying disease (TB, bronchiectasis, tumor).
  5. Post‑control: ICU monitoring; recurrence plan; smoking cessation and pulmonary follow‑up.

Clinical Synopsis & Reasoning

Life‑threatening bleeding (>100–200 mL/h or any bleed causing instability/respiratory failure). Prioritize airway and bleeding‑lung isolation, position bleeding side down, localize with bronchoscopy/CTA, and arrange bronchial artery embolization; treat the underlying cause.


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 bronchoscopy (early)Localization/temporizingIdentify side/segment; suction; topical measuresBalloon blockers if needed
CTA chest with arterial phaseEtiology/roadmapHypertrophied bronchial arteries; aspergilloma, TB, malignancyGuides IR embolization
Labs (CBC/coags), type & crossResuscitationAnemia/coagulopathyReverse anticoagulation; TXM for MTP

Pharmacology

Medication/InterventionMechanismOnsetRole in TherapyLimitations
Large ETT (≥8.5) with possible lung isolationAirway controlImmediateFacilitates suction/bronchial blockerAvoid small ETT
Tranexamic acid 500–1000 mg nebulized/topical (adjunct)AntifibrinolyticMinutesAdjunct hemostasisEvidence mixed; avoid systemic thrombosis risks
Bronchial artery embolization (procedure)Definitive hemostasisHoursHigh initial success; recurrence possibleRequires IR expertise

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. CHEST/BTS reviews on massive hemoptysis management — Link