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Difficulty: MediumInitial Stabilization and Triage

An unresponsive 32-year-old male is wheeled into the resuscitation bay by his coworkers, who drove him directly from their office building across the street. The colleagues state that the patient began experiencing severe throat tightness, a harsh cough, and profound dizziness just minutes after taking a bite of a catered Thai peanut dish.

Initial vital signs on the monitors show:
Blood pressure: 60/40 mmHg
Heart rate: 148/min (sinus tachycardia)
Respiratory rate: 36/min
Oxygen saturation: 81% on room air
Temperature: 36.9°C (98.4°F)

On physical examination, the patient is deeply obtunded. His face and lips are profoundly swollen, and there is audible high-pitched inspiratory stridor. Auscultation of the chest reveals almost silent lung fields with minimal air entry. Widespread erythematous, raised wheals are visible on his chest and arms. Two large-bore peripheral intravenous lines are immediately established.

Which of the following are the most appropriate simultaneous initial management steps? (Select all that apply)

  1. Intramuscular administration of epinephrineAnswer
  2. Immediate endotracheal intubationAnswer
  3. C
    Intravenous administration of methylprednisolone
  4. D
    Computed tomography scan of the neck
  5. E
    Intravenous administration of diphenhydramine

Answer

The correct simultaneous interventions are intramuscular administration of epinephrine and immediate endotracheal intubation.
The patient is presenting with severe, rapidly progressive anaphylactic shock complicated by impending airway occlusion. In this critically unstable scenario, two life-threatening problems must be addressed concurrently. First, the profound hypotension and bronchoconstriction demand the immediate administration of intramuscular epinephrine, which is the cornerstone of anaphylaxis resuscitation. Second, the presence of an altered mental status, severe hypoxia (81%), and inspiratory stridor indicates critical laryngeal edema and a rapidly closing airway. Because medication alone may not reverse the edema fast enough to prevent asphyxiation in a crashing patient, definitive airway management via endotracheal intubation must be performed simultaneously. These concurrent steps represent the proper application of standard emergency stabilization principles.

Step-by-Step Solution

1
Identify the underlying clinical syndrome.
The patient is experiencing severe anaphylactic shock triggered by a food allergen, characterized by distributive shock (BP 60/40 mmHg) and critical airway compromise (stridor, SpO2 81%).
Rapid recognition of anaphylaxis is required to initiate life-saving protocols before cardiac arrest occurs.
2
Prioritize the initial stabilization steps based on the ABCs (Airway, Breathing, Circulation).
The patient has critical 'Airway' compromise requiring securement, and severe 'Circulation' failure requiring vasopressor/inotropic support.
In catastrophic presentations, interventions addressing airway and circulatory collapse must occur simultaneously.
3
Select the specific immediate interventions.
Intubate the patient to secure the rapidly closing airway, while concurrently administering intramuscular epinephrine to reverse the systemic vasodilation and bronchoconstriction.
These two steps directly treat the immediate physiological life threats, unlike secondary medications which have a delayed onset.

Key Concept

The initial stabilization of severe anaphylactic shock requires concurrent life-saving interventions: immediate intramuscular epinephrine to reverse cardiovascular collapse, and aggressive airway management (endotracheal intubation) for impending laryngeal obstruction.
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Topics

Initial Stabilization and Triage

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