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Difficulty: HardInitial Stabilization and Triage

A 68-year-old man is brought to the emergency department by emergency medical services due to sudden-onset, severe shortness of breath. He has a history of ischemic cardiomyopathy with a known left ventricular ejection fraction of 25%25\%. Upon arrival, the patient is lethargic, diaphoretic, and using accessory muscles of respiration. His blood pressure is 72/4872/48 mm Hg, heart rate is 122122/min, respiratory rate is 3434/min, and oxygen saturation is 82%82\% on room air. Physical examination reveals cool, mottled extremities and prominent jugular venous distention. Auscultation of the lungs demonstrates coarse crackles in all lung fields. Which of the following is the most appropriate initial step in the stabilization of this patient?

  1. Endotracheal intubationAnswer
  2. B
    Initiation of noninvasive positive-pressure ventilation
  3. C
    Administration of intravenous furosemide
  4. D
    Initiation of an intravenous dobutamine infusion
  5. E
    Acquisition of a comprehensive transthoracic echocardiogram

Answer

Endotracheal intubation is the most appropriate initial step to stabilize this patient's airway and breathing.
This patient is presenting with acute decompensated heart failure and cardiogenic shock, characterized by severe hypotension, cool and mottled extremities, and altered mental status. The initial stabilization of any critically ill patient must follow the ABCs (Airway, Breathing, Circulation). This patient is lethargic, hypoxic, and showing signs of impending respiratory failure (accessory muscle use, severe tachypnea). Endotracheal intubation is the most appropriate initial step to protect the airway, ensure adequate oxygenation, and decrease the work of breathing. Reducing the work of breathing is particularly critical in cardiogenic shock, as respiratory muscles can consume a massive amount of cardiac output during severe distress. Once the airway and breathing are secured, circulatory support (e.g., inotropes, vasopressors) can be safely initiated.

Step-by-Step Solution

1
Assess the patient's clinical presentation and vital signs.
The patient exhibits severe hypotension, hypoxia, lethargy, and signs of biventricular heart failure (crackles, jugular venous distention, mottled extremities).
To determine the severity of the patient's condition and identify life-threatening compromises.
2
Apply the principles of initial resuscitation (ABCs).
The patient has an unprotected airway (lethargy) and severe respiratory failure (hypoxia, tachypnea, accessory muscle use) in the setting of cardiogenic shock.
Airway and breathing must be secured before addressing circulation or initiating diagnostic workups.
3
Evaluate contraindications to noninvasive stabilization methods.
Noninvasive positive-pressure ventilation is contraindicated due to the patient's altered mental status and severe hypotension.
To select the safest and most definitive method of airway and ventilatory support.

Key Concept

In patients presenting with cardiogenic shock and acute pulmonary edema, definitive airway management (endotracheal intubation) takes precedence when there is altered mental status, severe hemodynamic instability, or impending respiratory failure.
Estimated Time:1m 15s
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Topics

Initial Stabilization and Triage

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