Hemoptysis
Coughing up blood from the tracheobronchial tree. Non-massive (most cases): workup to find the cause. Massive (> 500 mL/24h or hemodynamic instability): the patient dies from asphyxiation, not exsanguination. Protect the airway first.
🔍 Overview
Classification
| Category | Volume | Urgency |
|---|---|---|
| Non-massive (most common) | < 500 mL/24h, hemodynamically stable | Workup: CT chest, bronchoscopy if no source on CT. Outpatient if stable. |
| Massive | > 500 mL/24h (or > 100 mL/hr), or any amount causing hemodynamic instability or respiratory compromise [Crocco Classification, 1968 | EMERGENCY. Airway protection → bronchoscopy → IR embolization or surgery. |
Common Causes
| Category | Examples |
|---|---|
| Airway (most common) | Bronchitis (#1 cause overall), bronchiectasis, lung cancer |
| Parenchymal | Pneumonia, TB (cavitary), lung abscess, fungal (aspergilloma) |
| Vascular | PE, AV malformations, Dieulafoy lesion (bronchial artery), mitral stenosis |
| Diffuse alveolar hemorrhage (DAH) | Vasculitis (GPA, anti-GBM), SLE, coagulopathy. Bilateral GGOs on CT + dropping Hgb + hemoptysis. |
| Iatrogenic | Anticoagulation (unmasks underlying lesion), post-biopsy, PA catheter |
🚨 Management
Massive Hemoptysis Protocol
Patients die from asphyxiation (drowning in blood), not hemorrhagic shock. Protect the airway. Identify the bleeding side. Isolate it. STEP Trial, Wand 2018
Immediate
Position bleeding side DOWN (gravity keeps blood in the affected lung, protects the good lung). Supplemental O₂. Large-bore IV × 2. Type and screen. Reverse anticoagulation if applicable. Hold antiplatelets.
Airway
If airway compromise → intubate with large ETT (≥ 8.0) to allow bronchoscopy through the tube. If bleeding side known → mainstem intubation of the NON-bleeding lung (advance ETT into the good side to isolate it). Double-lumen ETT if available (lung isolation).
Bronchoscopy
Rigid bronchoscopy preferred for massive hemoptysis (better suctioning, can tamponade with the scope). Flexible bronchoscopy for localization. Interventions: cold saline lavage, epinephrine instillation, balloon tamponade, electrocautery.
Bronchial artery embolization (BAE)
Definitive treatment for massive hemoptysis. Interventional radiology. ~90% immediate success rate. Recurrence: ~10–30% long-term. Complication: spinal cord ischemia (bronchial and spinal arteries share a common origin -artery of Adamkiewicz). Defined BAE Outcomes, Defined Mal 2010
Surgery
Last resort. Lobectomy/pneumonectomy if BAE fails, recurrent massive hemoptysis, or resectable lesion (e.g., aspergilloma, cancer). High surgical mortality in the emergent setting (~20–40%).
📋 On Rounds
Why do patients die from massive hemoptysis -hemorrhage or asphyxiation?
Asphyxiation. The total dead space of the tracheobronchial tree is only ~150 mL. A relatively small amount of blood (compared to GI bleeding) can flood both lungs and cause fatal hypoxia. The patient doesn't bleed to death -they drown in their own blood. This is why airway management (positioning, intubation, lung isolation) takes priority over volume resuscitation.
What is the most dangerous complication of bronchial artery embolization?
Spinal cord ischemia (paraplegia). The artery of Adamkiewicz (the major anterior spinal artery, typically arising from T9–T12 intercostal arteries) can share a common trunk with bronchial arteries or arise nearby. Inadvertent embolization of this artery causes anterior spinal artery syndrome → paraplegia. This occurs in ~1–5% of BAE procedures. Careful angiographic identification of spinal feeders before embolization is essential.
How do you manage massive hemoptysis in the first 5 minutes?
Massive hemoptysis (> 500 mL/24h or > 100 mL/hr) = airway emergency. The patient usually drowns before they exsanguinate. Step 1: Position the patient bleeding side DOWN (lateral decubitus -prevents blood from flooding the good lung). Step 2: Call for help -anesthesia for intubation, IR for bronchial artery embolization, pulmonology for bronchoscopy, thoracic surgery. Step 3: Intubate with a large ETT (≥ 8.0)
What is the most common cause of hemoptysis? (Hint: it's not cancer)
Acute bronchitis is the #1 cause of hemoptysis in the outpatient/ED setting -not cancer, not TB, not PE. Most hemoptysis is mild (< 30 mL) and self-limited from mucosal inflammation. However, the workup depends on risk factors: Low risk (age < 40, non-smoker, single episode, mild): CXR + symptomatic treatment, follow-up if persistent.
Clinical Examples
📋 Case 1, Massive Hemoptysis from Bronchiectasis
Patient: 58M with known bronchiectasis (chronic MAC infection). Sudden onset coughing up bright red blood, estimated 400 mL in 2 hours. HR 118, BP 100/62, SpO₂ 88% on room air.
Key findings: Massive hemoptysis (> 300 mL/24h or > 100 mL/hr). Bronchiectasis causes hypertrophied bronchial arteries prone to rupture. Life-threatening, death is from asphyxiation (drowning in blood), not exsanguination.
Management:
- Bleeding lung DOWN, lateral decubitus with affected side dependent (protect the good lung)
- Intubate with large-bore ETT (≥ 8.0) if unable to protect airway or maintain oxygenation
- Emergent interventional radiology: bronchial artery embolization (BAE), ~90% immediate success rate
- If BAE unavailable: rigid bronchoscopy for tamponade (Fogarty balloon catheter in bleeding segment)
- Type and cross, resuscitate with blood products. TXA 1g IV
Teaching point: In massive hemoptysis, positioning is critical: bleeding lung DOWN prevents blood from flooding the contralateral lung. The cause of death is airway obstruction, not hemorrhagic shock, protecting the unaffected lung is the priority.
📋 Case 2, Hemoptysis in Lung Cancer
Patient: 67M, 40-pack-year smoker. Blood-streaked sputum × 3 weeks, 10 lb weight loss. CXR: right hilar mass. CT: 4 cm central RUL mass encasing bronchus.
Key findings: Central lung mass in a heavy smoker, squamous cell carcinoma until proven otherwise (central location, endobronchial involvement). Hemoptysis from tumor erosion into bronchial vessels.
Management:
- CT angiography chest to assess vascular involvement and bleeding risk
- Bronchoscopy: diagnostic (biopsy) + therapeutic (laser/electrocautery for endobronchial component if actively bleeding)
- Staging: PET/CT, brain MRI, mediastinal lymph node sampling
- Interventional pulmonology for endobronchial stent if obstructing airway
- Oncology: chemoradiation if locally advanced; palliative radiation for hemoptysis control
Teaching point: Hemoptysis in a smoker > 40 is lung cancer until proven otherwise. Even mild hemoptysis in a high-risk patient requires CT chest and bronchoscopy, the amount of hemoptysis does not correlate with cancer severity.
📋 Case 3, Diffuse Alveolar Hemorrhage (DAH)
Patient: 35M with hemoptysis, dyspnea, Hgb dropping 12 → 7 over 48h. CXR: bilateral diffuse infiltrates. BAL: sequential aliquots increasingly bloody (confirms DAH). Cr 4.2 (rising). c-ANCA/PR3 positive.
Key findings: DAH + RPGN = pulmonary-renal syndrome. c-ANCA positive → GPA (granulomatosis with polyangiitis). DAH confirmed by progressively bloodier BAL aliquots. Can also see hemosiderin-laden macrophages.
Management:
- Pulse methylprednisolone 1g IV daily × 3 days
- Rituximab 375 mg/m² weekly × 4 (induction for ANCA vasculitis)
- Plasma exchange for severe DAH or Cr > 5.7 PEXIVAS, 2020
- Supportive: intubation if respiratory failure, transfuse to Hgb > 7, avoid invasive procedures
- Renal biopsy when stable (expect pauci-immune crescentic GN)
Teaching point: DAH is diagnosed by progressively bloodier BAL returns, not by hemoptysis (1/3 of DAH patients have no hemoptysis). The triad of bilateral infiltrates + dropping Hgb + rising Cr should prompt immediate evaluation for pulmonary-renal syndrome.
📣 Sample Presentation
One-Liner
"Mr. Davis is a 58-year-old smoker presenting with 2 episodes of hemoptysis (~50 mL total). Hemodynamically stable. CT chest: 2.5 cm RUL mass with surrounding hemorrhage."
Key Points to Cover on Rounds
Non-massive hemoptysis with concerning RUL mass (likely malignancy in a smoker). Stable -not massive (<500 mL/24h). CT angiography: no active extravasation. Bronchoscopy: scheduled for tomorrow (diagnostic -BAL, brushings, biopsy + evaluate for bleeding source). If active bleeding at bronchoscopy → cold saline lavage, topical epinephrine, or bronchial blocker. Staging workup: PET-CT ordered, brain MRI. Smoking cessation counseled. Plan: bronchoscopy tomorrow for tissue diagnosis, multidisciplinary tumor board if malignancy confirmed. IR for bronchial artery embolization on standby if bleeding escalates.
🧪 Workup
Workup
See the Overview and Management tabs for the hemoptysis workup algorithm (massive vs non-massive triage, CXR → CT → bronchoscopy, and DAH evaluation).
💊 Medications
Medications
Medication details (TXA, reversal agents, antibiotics for infectious causes, cyclophosphamide/rituximab for DAH vasculitis) are in the Management tab with evidence-based dosing and trial citations.
⚡ Summary
Summary
They Die of Asphyxiation, Not Blood Loss
Even massive hemoptysis rarely causes hemorrhagic shock; patients drown in their own blood. The anatomic dead space is only about 150 mL, so a volume that would be trivial elsewhere fills the airway. Protect the airway first, identify the bleeding side, and isolate it.
Define Massive by Effect, Not Only Volume
Above about 500 mL in 24 h, or any volume causing hemodynamic instability, hypoxemia or airway compromise. A smaller volume in a patient with poor reserve is functionally massive, so treat the physiology rather than counting into a container.
Position the Bleeding Side Down
Lateral decubitus with the affected lung dependent, so gravity keeps blood out of the good lung. This is the single most useful thing that can be done before any equipment arrives, and it is frequently forgotten because it feels counterintuitive to lie a patient on the bad side.
Secure the Airway Deliberately
If intubation is needed, use a large endotracheal tube (8.0 or above) so a bronchoscope can pass. Selective mainstem intubation of the unaffected lung, or a bronchial blocker, isolates the bleeding side. Get anesthesia and interventional pulmonology involved early rather than after the first desaturation.
Bronchial Arteries Are the Source
Roughly 90% of massive hemoptysis comes from the bronchial circulation, which is systemic pressure, not the low-pressure pulmonary arteries. That is why bronchial artery embolization is the definitive intervention, with high immediate success. Surgery is reserved for embolization failure or a localized resectable lesion.
Know the Common Causes
Bronchiectasis, bronchitis, tuberculosis and other infection, malignancy, and pulmonary embolism. Also consider the pulmonary-renal syndromes, ANCA vasculitis and anti-GBM disease, where hemoptysis with a rising creatinine and an active sediment is a treatment emergency of a completely different kind.
Rule Out the Two Mimics First
Confirm it is really coming from the airway. Hematemesis is darker, acidic, with food particles and a GI history. Pseudohemoptysis from the nasopharynx or oropharynx is common and is settled by an ENT examination. Treating an upper GI bleed as hemoptysis wastes critical time.
Correct Coagulopathy and Investigate the Rest
Reverse anticoagulation, correct platelets and clotting factors, and consider tranexamic acid, including nebulized, which reduces bleeding in non-massive hemoptysis. For non-massive hemoptysis, CT is the initial test, with bronchoscopy for localization, tissue and therapeutic intervention. A normal chest x-ray does not exclude malignancy, so a smoker over 40 with hemoptysis needs a CT and usually a bronchoscopy regardless.
📄 One Pager
Text version
Pulmonology · One Pager
Hemoptysis
Most common = bronchitis. Most dangerous = massive (> 500 mL/24h) → airway emergency. Bleeding side DOWN. Bronchoscopy + IR embolization. Always consider malignancy in smokers > 40.
Causes
Bronchitis (#1 overall), bronchiectasis, malignancy (smoker > 40), pneumonia, TB, PE, vasculitis (DAH), AVM. Non-massive: CXR → CT if abnormal or high-risk → bronchoscopy.
Massive Hemoptysis (> 500 mL/24h)
AIRWAY EMERGENCY -patient drowns before exsanguinating. (1) Bleeding side DOWN. (2) Intubate (large ETT ≥ 8.0). (3) Bronchoscopy for localization. (4) IR bronchial artery embolization (definitive ~90%). (5) Surgery if refractory.
DAH -Diffuse Alveolar Hemorrhage
Bilateral GGO + hemoptysis + dropping Hgb. Causes: ANCA vasculitis, anti-GBM (Goodpasture), SLE, drug-induced. Treatment: pulse steroids + treat underlying cause. BAL: progressively bloodier aliquots.
Key Drugs
BronchoscopyLocalization + intervention
BAEBronchial artery embolization (IR)
TXA1g IV (adjunct for bleeding)
Treat underlyingAntibiotics, anticoag for PE, immunosuppression for vasculitis
Pitfalls
- Not positioning bleeding side down (protects good lung)
- Small ETT (need ≥ 8.0 to allow bronchoscopy through tube)
- Missing malignancy in smoker > 40 (always consider)
- Attributing to bronchitis without follow-up imaging in high-risk patients
Related Topics
AsthmaCOPD -Chronic ManagementInterstitial Lung DiseaseObstructive Sleep ApneaPFT InterpretationPleural Effusion