Paramedics rush a 34-year-old woman to the emergency department. Her husband discovered he… — USMLE Step 2 CK

Paramedics rush a $34$ -year-old woman to the emergency department. Her husband discovered her unresponsive in their bedroom alongside an empty bottle of her recently prescribed antidepressant. According to the husband, she suffers from major depressive disorder and has been enduring a severe relapse over the past month.

Upon arrival, her temperature is $37.8^\circ\text{C}$ ( $100.0^\circ\text{F}$ ), blood pressure is $90/60\text{ mmHg}$ , pulse is $128/\text{min}$ , and respirations are $6/\text{min}$ . Physical examination reveals dilated, minimally reactive pupils, completely dry mucous membranes, and absent bowel sounds. She is deeply obtunded and withdraws only to painful stimuli. An electrocardiogram demonstrates sinus tachycardia with a QRS duration of $150\text{ ms}$ .

As the medical team prepares for immediate endotracheal intubation, the husband produces a legally valid, notarized advance directive that the patient completed one year ago. The document explicitly mandates: 'I refuse mechanical ventilation and cardiopulmonary resuscitation under any circumstances.' The husband pleads, 'She has been expressing a desire to end her life for weeks. She meant every word in this document. You must respect her legal rights and not put her on a breathing machine.'

Which of the following is the most appropriate next step in management?

Intubate the patient and administer intravenous sodium bicarbonateCevap
B
Withhold intubation and provide comfort-focused care
C
Delay treatment to obtain an emergency ethics committee consultation
D
Administer intravenous physostigmine to reverse the toxic effects
E
Administer intravenous sodium bicarbonate but withhold intubation

Cevap

Intubate the patient and administer intravenous sodium bicarbonate

This patient presents with respiratory failure and signs of severe tricyclic antidepressant (TCA) toxicity, indicated by the anticholinergic toxidrome (dilated pupils, dry mucous membranes, absent bowel sounds) and a widened QRS complex (>

100\text{ ms}

). The appropriate medical management is securing the airway via endotracheal intubation and administering intravenous sodium bicarbonate to overcome sodium channel blockade and prevent fatal arrhythmias.

Ethically, the husband is requesting that the physician withhold life-saving care based on the patient's advance directive. However, in the setting of an intentional suicide attempt, advance directives refusing life-sustaining interventions are legally and ethically suspended. A suicide attempt represents an acute psychiatric emergency, and the patient is presumed to have impaired decision-making capacity due to an underlying mental illness (e.g., severe depression). Therefore, the physician has an obligation to provide life-saving, reversible treatments to preserve the patient's life. Emergency interventions should proceed immediately and must not be delayed by seeking court orders, ethics consultations, or attempting to inappropriately compromise on the level of life-saving care.

Adım Adım Çözüm

Diagnose the medical emergency.

The patient is experiencing a tricyclic antidepressant (TCA) overdose (anticholinergic toxidrome, wide QRS > 100 ms) complicated by respiratory failure (RR 6/min).

Recognizing the toxidrome dictates the need for airway protection and sodium bicarbonate to prevent fatal ventricular arrhythmias.

Evaluate the ethical validity of the advance directive.

The advance directive is ethically and legally suspended in this specific context.

The patient's life-threatening condition is the direct result of a suicide attempt, which legally implies an acute impairment of decision-making capacity due to a psychiatric crisis.

Determine the next best step in management.

Proceed immediately with emergency intubation and sodium bicarbonate administration.

Physicians have an obligation to provide life-saving, reversible treatments during a suicide attempt, overriding both the surrogate's demands and the advance directive without awaiting a court order.

Anahtar Kavram

Advance directives refusing life-sustaining interventions are generally suspended during an active suicide attempt; the patient is presumed to lack capacity, obligating the physician to provide emergency, life-saving medical and psychiatric care.

Tahmini Süre:1m 30s

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Cevap

Adım Adım Çözüm

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