One-liner#

Evaluate hemoptysis (coughing up blood) to identify life-threatening massive hemoptysis requiring emergent intervention, rule out lung cancer in high-risk patients, and manage common benign causes like acute bronchitis while ensuring appropriate follow-up imaging.

Quick nav#

• Red flags / send to ED
• Key history
• Focused exam
• Differential (quick pattern recognition)
• Workup
• Initial management
• Management by diagnosis
• Follow-up
• Patient instructions
• Smartphrase snippets

Red flags / send to ED#

• Massive hemoptysis: >100 mL in 24 hours OR any amount causing respiratory compromise
• Ongoing bright red blood with each cough
• Respiratory distress or hypoxia
• Hemodynamic instability
• Known or suspected lung cancer with new hemoptysis
• Anticoagulated patient with significant hemoptysis
• Unable to protect airway (drowning in blood)

Key history#

Confirm true hemoptysis:

• Hemoptysis: blood originating from lower respiratory tract (coughed up)
• Hematemesis: blood from GI tract (vomited, often with food particles, coffee-ground appearance)
• Epistaxis with posterior drainage: blood from nose draining to throat
• Gingival bleeding: blood from gums mixed with saliva

Quantify the bleeding:

• Scant/blood-streaked sputum: most common; often benign
• Mild: <30 mL/day (tablespoon = ~15 mL; teaspoon = ~5 mL)
• Moderate: 30–100 mL/day
• Massive: >100 mL/day or any amount causing respiratory compromise

Practical tip: Ask patient to cough into a white tissue or cup to visualize. “How many tissues soaked with blood?” or “Could you fill a shot glass?” helps quantify.

Characterize the blood:

• Bright red: active bleeding, bronchial source
• Dark red/brown: older blood, less acute
• Pink frothy: pulmonary edema (not true hemoptysis)
• Blood-streaked sputum: often bronchitis

Associated symptoms:

• Cough: acute (bronchitis, pneumonia) vs chronic (bronchiectasis, cancer)
• Fever: pneumonia, TB, lung abscess
• Dyspnea: PE, pneumonia, cancer with obstruction
• Chest pain: PE (pleuritic), pneumonia, cancer
• Weight loss: malignancy, TB
• Night sweats: TB, malignancy
• Leg swelling/pain: DVT → PE

Risk factors for lung cancer (critical to assess):

• Smoking history: pack-years (>30 pack-years = high risk)
• Age >40 (especially >55)
• Prior lung cancer or head/neck cancer
• Occupational exposures: asbestos, radon, uranium
• Family history of lung cancer
• COPD

Risk factors for PE:

• Immobilization, recent surgery, travel
• Malignancy
• Prior VTE
• Estrogen use
• Pregnancy/postpartum

Risk factors for TB:

• Born in or travel to endemic area
• HIV or immunocompromised
• Homeless, incarcerated, congregate living
• Healthcare worker
• Close contact with active TB

Medication review:

• Anticoagulants: warfarin, DOACs, heparin (increase bleeding risk)
• Antiplatelets: aspirin, clopidogrel
• Cocaine: can cause diffuse alveolar hemorrhage

Focused exam#

• Vitals: SpO₂, RR, HR, BP, temperature
• General: respiratory distress, cachexia (malignancy), pallor (anemia from chronic blood loss)
• HEENT: nasal mucosa (epistaxis source), oropharynx (gingival bleeding, posterior pharynx blood)
• Neck: lymphadenopathy (malignancy, TB)
• Lungs: focal findings (mass, consolidation), wheezes (obstruction), crackles (pneumonia, hemorrhage)
• Cardiac: murmurs (mitral stenosis can cause hemoptysis), irregular rhythm
• Extremities: clubbing (lung cancer, bronchiectasis), unilateral leg swelling (DVT)
• Skin: telangiectasias (hereditary hemorrhagic telangiectasia), petechiae (coagulopathy)

Differential (quick pattern recognition)#

Common/likely (outpatient)#

Can’t-miss / urgent#

Workup#

All patients with hemoptysis need CXR (unless clearly epistaxis or gingival source).

Initial workup:

CT chest indications:

• Abnormal CXR
• Normal CXR but high-risk for malignancy (smoker >40, >30 pack-years)
• Recurrent or persistent hemoptysis
• Suspected bronchiectasis
• Risk factors for PE (CT-PA)

Bronchoscopy indications (pulmonology referral):

• Massive hemoptysis (after stabilization)
• Suspected endobronchial lesion
• Hemoptysis with normal CT (to localize source)
• Recurrent unexplained hemoptysis
• Suspected diffuse alveolar hemorrhage

When NOT to order extensive workup:

• Clear acute bronchitis with blood-streaked sputum, normal CXR, low-risk patient → observe
• Obvious epistaxis source with no respiratory symptoms

Risk stratification for malignancy:

High-risk features (warrant CT even if CXR normal):

• Age >40 and smoking history >30 pack-years
• Hemoptysis >1 week
• Weight loss
• Prior malignancy
• Abnormal lung exam

Low-risk features (may observe with close follow-up):

• Age <40, non-smoker
• Blood-streaked sputum with acute bronchitis
• Normal CXR
• Resolves with treatment of underlying cause

Initial management#

Massive hemoptysis (>100 mL or respiratory compromise):

• Call 911 / send to ED immediately
• Position patient with bleeding side down (if known) to protect good lung
• Supplemental O₂
• Large-bore IV access if available
• Do NOT attempt to manage in office

Non-massive hemoptysis:

1. Assess severity and stability
2. Obtain CXR
3. Treat underlying cause
4. Determine need for CT and/or pulmonology referral
5. Ensure appropriate follow-up

Anticoagulation management:

• If supratherapeutic INR: hold warfarin, consider vitamin K
• If therapeutic anticoagulation with minor hemoptysis: usually continue; treat underlying cause
• If significant hemoptysis: hold anticoagulation, discuss with prescribing physician, assess risk/benefit
• DOAC reversal agents (idarucizumab, andexanet) rarely needed in outpatient setting

Cough suppression:

• May reduce hemoptysis by reducing airway trauma
• Benzonatate 100–200 mg TID
• Dextromethorphan 10–20 mg Q4H
• Codeine 10–20 mg Q4–6H (if severe, short-term)

Management by diagnosis#

Acute Bronchitis with Hemoptysis#

Education:

• Blood-streaked sputum common with severe coughing
• Airway inflammation and trauma from coughing causes minor bleeding
• Self-limited; resolves as bronchitis improves
• No antibiotics needed (viral cause)

Treatment:

• Supportive care: rest, hydration
• Cough suppression if severe
• No antibiotics (unless bacterial pneumonia suspected)

Follow-up: Should resolve within 1–2 weeks. If hemoptysis persists >2–3 weeks or worsens, obtain CT chest.

Pneumonia with Hemoptysis#

Education:

• “Rusty” or blood-tinged sputum can occur with bacterial pneumonia
• Treat the pneumonia; hemoptysis resolves with infection
• Persistent hemoptysis after treatment warrants further evaluation

Treatment:

• Antibiotics per CAP guidelines (see Cough Acute page)
• Supportive care

Follow-up: CXR at 6–8 weeks to confirm resolution (especially if smoker or age >50). If hemoptysis persists after treatment, CT chest.

Lung Cancer#

Recognition:

• Hemoptysis in smoker >40 years old = lung cancer until proven otherwise
• Associated features: weight loss, persistent cough, dyspnea, chest pain
• CXR may show mass, but can be normal (CT more sensitive)

PCP role:

• Order CXR → CT chest if abnormal or high clinical suspicion
• Urgent pulmonology/oncology referral
• Do not delay workup

Workup:

• CT chest with contrast
• PET-CT for staging
• Tissue diagnosis (bronchoscopy, CT-guided biopsy, or surgical)

Follow-up: Expedited referral to pulmonology/oncology. PCP coordinates care and manages comorbidities.

Pulmonary Embolism#

Recognition:

• Hemoptysis occurs in ~20% of PE
• Acute dyspnea + pleuritic chest pain + PE risk factors
• May have unilateral leg swelling (DVT)

PCP role:

• Calculate Wells score
• If PE likely or D-dimer positive: send to ED for CT-PA
• Do not start anticoagulation before confirming diagnosis (unless very high suspicion and delay to imaging)

Follow-up: After diagnosis and anticoagulation initiation, PCP manages long-term anticoagulation (minimum 3 months).

Tuberculosis#

Recognition:

• Chronic cough + hemoptysis + fever + night sweats + weight loss
• TB risk factors: immigrant from endemic area, HIV, homeless, incarcerated, healthcare worker
• CXR: upper lobe infiltrates, cavities, lymphadenopathy

PCP role:

• High suspicion → isolate patient (airborne precautions)
• Order CXR
• Collect sputum AFB x 3 (ideally early morning specimens on 3 different days)
• Notify public health
• Refer to TB clinic or infectious disease

Do NOT:

• Start empiric TB treatment without specialist guidance
• Send patient home without isolation instructions if TB suspected

Follow-up: Public health and ID/TB clinic manage treatment. PCP coordinates care.

Bronchiectasis#

Education:

• Permanent airway dilation with impaired mucus clearance
• Chronic productive cough with recurrent infections
• Hemoptysis from inflamed, friable airways
• Requires CT chest (HRCT) for diagnosis

Treatment:

• Airway clearance: chest physiotherapy, flutter valve
• Treat exacerbations with antibiotics (often Pseudomonas coverage needed)
• Pulmonology referral for management

Follow-up: Pulmonology co-management. Monitor for exacerbations.

Anticoagulation-Related Hemoptysis#

Education:

• Anticoagulation increases bleeding risk but hemoptysis still warrants workup
• Must rule out underlying lesion (cancer, bronchiectasis) that anticoagulation unmasked
• Supratherapeutic anticoagulation increases risk

Management:

• Check INR if on warfarin
• Assess severity of hemoptysis
• CXR (and often CT) to evaluate for underlying cause
• Minor hemoptysis with therapeutic anticoagulation: usually continue anticoagulation, treat underlying cause
• Significant hemoptysis: hold anticoagulation, discuss with prescribing physician

Follow-up: Recheck INR. CT chest if not already done. Reassess anticoagulation indication and risk/benefit.

Follow-up#

Default intervals:

• Acute bronchitis with hemoptysis: return if not resolved in 2–3 weeks
• After CT showing no malignancy: pulmonology follow-up if recurrent
• Abnormal imaging: expedited specialist referral

Imaging follow-up:

• Normal CXR in low-risk patient: observe; CT if hemoptysis persists >2–3 weeks
• Normal CXR in high-risk patient (smoker >40): CT chest
• Abnormal CXR: CT chest
• Normal CT: pulmonology referral if hemoptysis recurrent or unexplained

Referral thresholds:

• Pulmonology: abnormal CT, recurrent/unexplained hemoptysis, suspected bronchiectasis, need for bronchoscopy
• Oncology: suspected or confirmed lung cancer
• Infectious disease: suspected TB
• Hematology: coagulopathy

Return precautions:

• Coughing up more blood or large amounts of blood
• Blood with every cough
• Difficulty breathing
• Chest pain
• Feeling faint or dizzy
• Fever (if not already present)

Patient instructions#

• Coughing up blood can be alarming, but small amounts of blood-streaked mucus with a bad cough are often not serious.
• We need to find out why you are coughing up blood. A chest X-ray is the first step, and you may need additional tests.
• If you smoke, this is an important reason to quit. Smoking is the leading cause of lung cancer.
• Take any prescribed medications as directed.
• Seek emergency care immediately if you cough up a large amount of blood (more than a few tablespoons), have trouble breathing, or feel faint.
• Keep your follow-up appointments so we can make sure the bleeding has stopped and there is no serious cause.

Smartphrase snippets#

.HEMOPTYSISLOWRISK Hemoptysis with blood-streaked sputum in setting of acute bronchitis. Low risk for malignancy (age <40, non-smoker, no weight loss). CXR [normal / obtained, pending]. Plan: supportive care, cough suppression PRN. Return if hemoptysis persists >2–3 weeks, increases in amount, or new symptoms develop.

.HEMOPTYSISHIGHRISK Hemoptysis in [smoker / age >40 / with weight loss]. CXR [shows X / normal but high clinical suspicion]. Ordering CT chest to evaluate for malignancy. Discussed importance of follow-up. Will expedite pulmonology referral if CT abnormal.

.HEMOPTYSISWORKUP Hemoptysis evaluation. CXR [result]. CT chest [ordered / shows X]. Labs: CBC [result], coags [result]. Assessment: [likely diagnosis / differential]. Plan: [treatment / referral / observation]. Discussed return precautions including increased bleeding, dyspnea, or chest pain.

Related pages#

• Cough (Acute) — acute cough differential including bronchitis
• Cough (Chronic) — chronic cough evaluation
• Dyspnea (Acute) — acute dyspnea including PE
• Dyspnea (Chronic) — chronic dyspnea including COPD, bronchiectasis
• Chest Pain — chest pain differential including PE
• COPD (problem) — chronic COPD management (coming soon)