A 58-year-old man is brought to the emergency department after coughing up approximately 6… — USMLE Step 2 CK

A $58$ -year-old man is brought to the emergency department after coughing up approximately $600 \text{ mL}$ of bright red blood over the past two hours. He has a history of treated pulmonary tuberculosis with known residual cavitary disease in the right upper lobe. On arrival, he is in severe respiratory distress, coughing continuously, and expectorating fresh blood. His temperature is $37.2^\circ\text{C}$ ( $99.0^\circ\text{F}$ ), blood pressure is $105/65 \text{ mmHg}$ , pulse is $118/\text{min}$ , and respiratory rate is $28/\text{min}$ . Pulse oximetry shows an oxygen saturation of $86\%$ on room air. Physical examination reveals coarse crackles over the right hemithorax, while the left lung field is relatively clear. The patient is unable to speak in full sentences due to the ongoing hemoptysis.

Arrange the following interventions in the most appropriate sequential order for managing this patient's condition.

1Establish a definitive airway via endotracheal intubation
2Position the patient in the right lateral decubitus position
3Perform bedside flexible bronchoscopy
4Consult interventional radiology for bronchial artery embolization

Answer

The correct sequence is to first secure the airway with endotracheal intubation, then position the patient with the bleeding lung down (right lateral decubitus), followed by bronchoscopy to evaluate the airways, and finally consult for bronchial artery embolization.

In massive hemoptysis (defined as expectorating

>600 \text{ mL}

of blood in

24

hours or a rate that threatens gas exchange), the immediate cause of mortality is asphyxiation, not blood loss. Therefore, the initial step in management is always securing the airway, typically with endotracheal intubation using a large-bore tube to facilitate suctioning and bronchoscopy. Following intubation, the patient should immediately be placed in a lateral decubitus position with the suspected bleeding lung down. In this scenario, the history of right upper lobe cavitary disease and right-sided crackles point to a right-sided source; placing the patient in the right lateral decubitus position uses gravity to protect the healthy left lung from blood spillage. Once the airway is secure and the good lung is protected, bedside flexible bronchoscopy should be performed to suction clots, identify the exact site of bleeding, and potentially provide temporary tamponade. Finally, after stabilization and localization, the patient should undergo bronchial artery embolization, which is the definitive treatment of choice for controlling massive hemoptysis.

Step-by-Step Solution

Recognize massive hemoptysis with impending respiratory failure.

Prioritize immediate airway management through endotracheal intubation.

Asphyxiation due to airways filling with blood is the primary cause of death in massive hemoptysis. Securing the airway takes precedence over all other interventions.

Protect the unaffected lung.

Place the patient in the right lateral decubitus position (bleeding side down).

Gravity prevents blood from the actively bleeding right lung from spilling into the healthy contralateral left lung, thereby maintaining gas exchange.

Visualize and clear the airways.

Perform flexible bronchoscopy.

Bronchoscopy allows for suctioning of blood and clots, identification of the specific anatomic bleeding source, and potential temporary hemostatic measures.

Achieve definitive hemostasis.

Proceed with bronchial artery embolization.

Once the patient is stable and the bleeding source is identified, embolization is the most effective first-line definitive therapy to stop massive bleeding.

Key Concept

The management of massive hemoptysis follows a strict algorithmic priority: secure the airway (intubation), protect the non-bleeding lung (dependent positioning of the bleeding side), localize the bleeding (bronchoscopy), and finally achieve definitive hemostasis (bronchial artery embolization).

Estimated Time:1m 30s

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