Massive Hemoptysis

Massive hemoptysis is an airway emergency where asphyxiation, not exsanguination, is the usual cause of death. In ED management of coughing up blood, severity is defined by respiratory failure, hemodynamic instability, or inability to clear the airway more than by any single volume cutoff.

Massive Hemoptysis Recognition and Workup

• Functional severity definition: Massive hemoptysis is best recognized by cardiopulmonary compromise or failed airway clearance rather than a rigid blood-volume threshold, because even modest blood can rapidly obstruct ventilation.
• Bronchial artery source: Bronchial arteries are the culprit in about 90% of massive hemoptysis, a high-pressure system that explains why bleeding can be brisk even when the lung parenchyma is the apparent target.
• Asphyxiation over exsanguination: The immediate lethal threat is suffocation from blood filling the airways, not blood loss, and the roughly 150 mL anatomic dead space explains how patients can decompensate fast.
• CTA imaging choice: CTA with pulmonary arterial phase contrast is the preferred imaging study because it can localize the bleeding site and vascular anatomy for embolization. We get into the radiology timing nuance in the episode.
• Bronchoscopy fallback: If the patient cannot lie flat, protect the airway, or maintain perfusing pressure for CT, emergent bronchoscopy becomes the diagnostic and therapeutic test of choice.

Airway Stabilization and Definitive Control

• Don't rush to intubate: Avoid intubation in the alert patient who is coughing effectively and clearing blood, because spontaneous cough is the best airway clearance tool in massive hemoptysis.
• When intubation is necessary: Intubate for hypoxemia with increased work of breathing, altered mental status, or inability to clear secretions, treating this as both an anatomically and physiologically difficult airway.
• Airway setup priorities: Prepare dual large-bore suction, full PPE, backup airway devices, and a cricothyrotomy plan, with the most experienced operator at the head of bed for first pass success.
• Tube and positioning strategy: A large-bore endotracheal tube of at least 8.0 mm facilitates bronchoscopy and suction, and after intubation the bleeding lung should be placed dependent to protect the other side.
• Hemostatic temporizing measures: Reverse anticoagulants early, correct platelets and fibrinogen when low, and consider nebulized tranexamic acid 500 to 1000 mg as a low-cost adjunct that should not delay definitive control.
• Early specialty mobilization: Pulmonary-critical care, interventional radiology, and cardiothoracic surgery should be engaged early because bronchial artery embolization controls bleeding in 80% to 100% of cases, with important exceptions we cover on the show.

References:

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