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Emergency And Acute Medicine – Hemoptysis
Basics And Description
Hemoptysis is the expectoration of blood originating from the tracheobronchial tree. The bronchial arteries are the source in approximately 90% of cases and are typically responsible for profuse bleeding. Pulmonary arteries account for about 5% of cases and usually cause smaller-volume bleeding, while nonbronchial systemic arteries account for the remaining 5%. Massive hemoptysis has been variably defined from 100 mL to 1 L in 24 hours; the most commonly accepted definition is greater than 300–600 mL in 24 hours, or more than 8 mL/kg/day in children. Mortality is significantly higher in massive hemoptysis, reaching approximately 38%, compared with about 4.5% in trivial to moderate hemoptysis. Malignancy and coagulopathy markedly increase mortality risk.
Etiology
Infectious causes are the most common and include acute or chronic bronchitis, pneumonia, necrotizing pneumonia or lung abscess, tuberculosis, viral infections, fungal infections, and parasitic diseases. Neoplastic causes include bronchogenic carcinoma, metastatic disease, carcinoid tumors, and small cell carcinoma. Pulmonary causes include bronchiectasis, pulmonary embolism or infarction, cystic fibrosis, bronchopleural fistula, and sarcoidosis. Cardiac causes include mitral stenosis, tricuspid endocarditis, and heart failure. Systemic diseases include Goodpasture syndrome, systemic lupus erythematosus, and vasculitides. Hematologic causes include coagulopathies, thrombocytopenia, platelet dysfunction, and disseminated intravascular coagulation. Vascular causes include pulmonary hypertension, arteriovenous malformations, pulmonary artery aneurysms, and aortobronchial fistulas. Drug-related causes include antiplatelet agents, anticoagulants, cocaine inhalation, and certain medications. Trauma, iatrogenic procedures, foreign-body aspiration, catamenial hemoptysis, amyloidosis, and idiopathic causes are additional considerations.
Clinical Presentation And Symptoms
Patients may present with cough productive of blood, chest pain, dyspnea, fever, weakness, fatigue, night sweats, and weight loss. Recurrent or chronic hemoptysis raises suspicion for bronchiectasis, arteriovenous malformations, or cystic fibrosis.
History And Physical Examination
History should assess smoking status, occupational or chemical exposures, travel history, medication use, anticoagulation, prior lung, renal, or valvular disease, and associated hematuria suggesting Goodpasture syndrome. Physical examination may reveal clubbing, ecchymoses, aphthous ulcers, nasal septal perforation, hematuria, or unilateral leg edema. Upper airway sources such as epistaxis or sinus disease should be excluded to rule out pseudohemoptysis. In children, careful HEENT evaluation is essential, and wheezing or crackles may suggest obstruction or infection.
Essential Workup
Differentiate true hemoptysis from pseudohemoptysis or gastrointestinal bleeding. Pulmonary bleeding is typically bright red, frothy, and mixed with sputum, whereas gastrointestinal bleeding is darker, associated with nausea or vomiting, and acidic. Estimation of bleeding volume and rate is critical to risk stratification.
Diagnostic Tests And Interpretation
Laboratory evaluation includes CBC, basic metabolic panel, coagulation studies, and urinalysis. Infectious workup may include blood cultures, sputum cultures, cytology, fungal studies, and acid-fast bacilli testing. Hypotensive or massive hemoptysis patients require type and cross-match and full metabolic evaluation. Imaging begins with chest radiography, which may be normal in up to 20% of cases. CT chest is the preferred study in stable patients and is the gold standard for diagnosing bronchiectasis and identifying malignancy or cavitary disease. CT angiography delineates bronchial and pulmonary arterial anatomy and can identify aneurysms or emboli. Bronchoscopy allows direct visualization, localization of bleeding, and therapeutic intervention but has limited yield for peripheral lesions.
Differential Diagnosis
Pseudohemoptysis from epistaxis, pharyngeal bleeding, or gastrointestinal hemorrhage must always be considered.
Initial Stabilization And Therapy
Airway protection and oxygenation are priorities. Suctioning should be readily available, and endotracheal intubation is indicated for airway compromise, severe hypoxemia, or massive bleeding. Large-bore IV access, continuous monitoring, and volume resuscitation are essential. In massive hemoptysis, asphyxiation is the primary cause of death rather than exsanguination.
Emergency Department Management
Treat underlying infection when suspected and correct hypoxemia and coagulopathy. In massive hemoptysis, position the patient upright or with the affected lung down to protect the nonbleeding lung. Bronchoscopy may be used for local control with vasoconstrictors, tamponade, or cautery. Temporary endobronchial tamponade may be achieved with balloon catheters or double-lumen tubes. Bronchial artery embolization is highly effective, with success rates approaching 98%, though rebleeding can occur. Surgical intervention is reserved for cases refractory to embolization or when structural lesions require resection.
Disposition And Follow-Up
ICU admission is required for massive hemoptysis, intubation, hemodynamic instability, hypoxemic respiratory failure, or airway compromise. General ward admission is appropriate for stable patients with identifiable causes requiring treatment. Discharge may be considered for patients with mild, self-limited hemoptysis who are hemodynamically stable, without coagulopathy or oxygen requirement, and who have reliable follow-up.
Follow-Up Recommendations
Patients should be counseled to stop smoking and avoid medications or supplements that increase bleeding risk. Immediate return to care is advised for worsening hemoptysis, dyspnea, chest pain, syncope, or dizziness.
Clinical Pearls And Common Errors
Early airway management is critical when deterioration is anticipated. In severe unilateral bleeding with hypoxemia, position the affected lung down. Bronchial artery embolization is highly effective and should be discussed early with interventional radiology.
Basics And Description
Hemoptysis is the expectoration of blood originating from the tracheobronchial tree. The bronchial arteries are the source in approximately 90% of cases and are typically responsible for profuse bleeding. Pulmonary arteries account for about 5% of cases and usually cause smaller-volume bleeding, while nonbronchial systemic arteries account for the remaining 5%. Massive hemoptysis has been variably defined from 100 mL to 1 L in 24 hours; the most commonly accepted definition is greater than 300–600 mL in 24 hours, or more than 8 mL/kg/day in children. Mortality is significantly higher in massive hemoptysis, reaching approximately 38%, compared with about 4.5% in trivial to moderate hemoptysis. Malignancy and coagulopathy markedly increase mortality risk.
Etiology
Infectious causes are the most common and include acute or chronic bronchitis, pneumonia, necrotizing pneumonia or lung abscess, tuberculosis, viral infections, fungal infections, and parasitic diseases. Neoplastic causes include bronchogenic carcinoma, metastatic disease, carcinoid tumors, and small cell carcinoma. Pulmonary causes include bronchiectasis, pulmonary embolism or infarction, cystic fibrosis, bronchopleural fistula, and sarcoidosis. Cardiac causes include mitral stenosis, tricuspid endocarditis, and heart failure. Systemic diseases include Goodpasture syndrome, systemic lupus erythematosus, and vasculitides. Hematologic causes include coagulopathies, thrombocytopenia, platelet dysfunction, and disseminated intravascular coagulation. Vascular causes include pulmonary hypertension, arteriovenous malformations, pulmonary artery aneurysms, and aortobronchial fistulas. Drug-related causes include antiplatelet agents, anticoagulants, cocaine inhalation, and certain medications. Trauma, iatrogenic procedures, foreign-body aspiration, catamenial hemoptysis, amyloidosis, and idiopathic causes are additional considerations.
Clinical Presentation And Symptoms
Patients may present with cough productive of blood, chest pain, dyspnea, fever, weakness, fatigue, night sweats, and weight loss. Recurrent or chronic hemoptysis raises suspicion for bronchiectasis, arteriovenous malformations, or cystic fibrosis.
History And Physical Examination
History should assess smoking status, occupational or chemical exposures, travel history, medication use, anticoagulation, prior lung, renal, or valvular disease, and associated hematuria suggesting Goodpasture syndrome. Physical examination may reveal clubbing, ecchymoses, aphthous ulcers, nasal septal perforation, hematuria, or unilateral leg edema. Upper airway sources such as epistaxis or sinus disease should be excluded to rule out pseudohemoptysis. In children, careful HEENT evaluation is essential, and wheezing or crackles may suggest obstruction or infection.
Essential Workup
Differentiate true hemoptysis from pseudohemoptysis or gastrointestinal bleeding. Pulmonary bleeding is typically bright red, frothy, and mixed with sputum, whereas gastrointestinal bleeding is darker, associated with nausea or vomiting, and acidic. Estimation of bleeding volume and rate is critical to risk stratification.
Diagnostic Tests And Interpretation
Laboratory evaluation includes CBC, basic metabolic panel, coagulation studies, and urinalysis. Infectious workup may include blood cultures, sputum cultures, cytology, fungal studies, and acid-fast bacilli testing. Hypotensive or massive hemoptysis patients require type and cross-match and full metabolic evaluation. Imaging begins with chest radiography, which may be normal in up to 20% of cases. CT chest is the preferred study in stable patients and is the gold standard for diagnosing bronchiectasis and identifying malignancy or cavitary disease. CT angiography delineates bronchial and pulmonary arterial anatomy and can identify aneurysms or emboli. Bronchoscopy allows direct visualization, localization of bleeding, and therapeutic intervention but has limited yield for peripheral lesions.
Differential Diagnosis
Pseudohemoptysis from epistaxis, pharyngeal bleeding, or gastrointestinal hemorrhage must always be considered.
Initial Stabilization And Therapy
Airway protection and oxygenation are priorities. Suctioning should be readily available, and endotracheal intubation is indicated for airway compromise, severe hypoxemia, or massive bleeding. Large-bore IV access, continuous monitoring, and volume resuscitation are essential. In massive hemoptysis, asphyxiation is the primary cause of death rather than exsanguination.
Emergency Department Management
Treat underlying infection when suspected and correct hypoxemia and coagulopathy. In massive hemoptysis, position the patient upright or with the affected lung down to protect the nonbleeding lung. Bronchoscopy may be used for local control with vasoconstrictors, tamponade, or cautery. Temporary endobronchial tamponade may be achieved with balloon catheters or double-lumen tubes. Bronchial artery embolization is highly effective, with success rates approaching 98%, though rebleeding can occur. Surgical intervention is reserved for cases refractory to embolization or when structural lesions require resection.
Disposition And Follow-Up
ICU admission is required for massive hemoptysis, intubation, hemodynamic instability, hypoxemic respiratory failure, or airway compromise. General ward admission is appropriate for stable patients with identifiable causes requiring treatment. Discharge may be considered for patients with mild, self-limited hemoptysis who are hemodynamically stable, without coagulopathy or oxygen requirement, and who have reliable follow-up.
Follow-Up Recommendations
Patients should be counseled to stop smoking and avoid medications or supplements that increase bleeding risk. Immediate return to care is advised for worsening hemoptysis, dyspnea, chest pain, syncope, or dizziness.
Clinical Pearls And Common Errors
Early airway management is critical when deterioration is anticipated. In severe unilateral bleeding with hypoxemia, position the affected lung down. Bronchial artery embolization is highly effective and should be discussed early with interventional radiology.
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