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Difficulty: HardInitial Stabilization and Triage

A 24-year-old woman is brought to the emergency department by paramedics after being found unresponsive in her apartment. Paramedics note an empty bottle of amitriptyline on the nightstand. On arrival, she is obtunded and only withdraws her extremities from painful stimuli. Her Glasgow Coma Scale score is 8. Vital signs are temperature 36.8∘C36.8^\circ\text{C} (98.2∘F98.2^\circ\text{F}), blood pressure 80/50 mmHg, pulse 135/min, and respiratory rate 10/min. A point-of-care electrocardiogram reveals sinus tachycardia with a QRS duration of 160 ms160\text{ ms} and a prominent terminal R wave in lead aVR.

Arrange the following management steps in the most appropriate chronological sequence for this patient's initial stabilization and subsequent care.

  1. 1Secure the airway via rapid sequence endotracheal intubation
  2. 2Administer a rapid intravenous bolus of sodium bicarbonate
  3. 3Administer activated charcoal via an orogastric tube
  4. 4Consult the psychiatry service for evaluation of intentional overdose

Answer

The correct sequence of steps is: 1. Secure the airway via rapid sequence endotracheal intubation; 2. Administer a rapid intravenous bolus of sodium bicarbonate; 3. Administer activated charcoal via an orogastric tube; 4. Consult the psychiatry service for evaluation of intentional overdose.
The fundamental algorithm for initial stabilization dictates that Airway and Breathing must precede Circulation, Decontamination, and Disposition. For this patient, a Glasgow Coma Scale score of 8 necessitates immediate endotracheal intubation (Airway). Following airway protection, the profound TCA-induced cardiotoxicity (QRS 160 ms160\text{ ms}, hypotension) must be aggressively managed with an intravenous sodium bicarbonate bolus to prevent ventricular arrhythmias (Circulation). Once the patient is stabilized and the airway is protected from aspiration, gastrointestinal decontamination with activated charcoal can be safely performed via an orogastric tube. Finally, after the patient is fully resuscitated and medically cleared, a psychiatric consultation is required to address the intentional overdose.

Step-by-Step Solution

1
Assess the patient's respiratory status and level of consciousness.
The patient has a Glasgow Coma Scale score of 8 and a respiratory rate of 10/min, indicating an inability to protect the airway and impending respiratory failure.
Initial toxicological resuscitation must strictly adhere to the ABCs (Airway, Breathing, Circulation). Endotracheal intubation is the immediate first step.
2
Assess the patient's hemodynamic and electrocardiographic status.
The patient is hypotensive with a significantly widened QRS complex (160 ms160\text{ ms}), indicative of life-threatening sodium channel blockade from TCA toxicity.
Once the airway is secure, the most imminent threat to life is fatal ventricular arrhythmia. Intravenous sodium bicarbonate must be administered immediately as a targeted cardioprotective antidote.
3
Evaluate the indication and safety of gastrointestinal decontamination.
Activated charcoal is beneficial for absorbing unabsorbed TCA from the gut, but doing so in an obtunded patient without a protected airway is extremely dangerous.
Activated charcoal should only be administered via an orogastric tube AFTER the airway has been secured with an endotracheal tube to eliminate the risk of massive aspiration.
4
Determine the requirements for final disposition and specialty consultation.
The patient requires a formal psychiatric evaluation due to a high-lethality intentional overdose.
Psychiatric consultation is a crucial part of holistic management but must be deferred until the patient is completely physiologically stabilized, extubated, and capable of participating in an interview.

Key Concept

The initial stabilization of severe toxicological emergencies prioritizes airway protection (intubation for GCS ≤8\leq 8) before the administration of targeted antidotes (sodium bicarbonate for TCA-induced wide QRS), followed by gastrointestinal decontamination only when the airway is secure, and finally psychiatric disposition.
Estimated Time:1m 30s
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Topics

Initial Stabilization and Triage

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