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Zorluk: OrtaSubstance-Related and Addictive Disorders

A 52-year-old man is brought to the emergency department by his husband due to severe confusion, agitation, and visual hallucinations. The husband reports that the patient has a history of bipolar disorder and has been hospitalized twice in the past for manic episodes. The patient recently experienced a severe depressive episode and was started on fluoxetine three weeks ago by a new provider. The patient also has a severe alcohol use disorder but abruptly stopped drinking 72 hours ago. On physical examination, the patient is profoundly diaphoretic, tremulous, and continuously picks at his skin, claiming there are "spiders everywhere." His temperature is 38.8°C (101.8°F), blood pressure is 158/96 mm Hg, pulse is 118/min, and respirations are 20/min. Physical examination reveals no nuchal rigidity, clear lungs to auscultation bilaterally, and a benign abdomen. Which of the following is the most appropriate next step in management?

  1. Administer intravenous diazepamCevap
  2. B
    Administer broad-spectrum intravenous antibiotics
  3. C
    Initiate sertraline monotherapy for mood stabilization
  4. D
    Diagnose schizophreniform disorder and begin oral risperidone
  5. E
    Administer intramuscular meperidine for acute sedation

Cevap

Administer intravenous diazepam
The most appropriate next step in management is the administration of an intravenous benzodiazepine, such as diazepam. This patient is experiencing delirium tremens (DTs), a severe and potentially fatal manifestation of alcohol withdrawal. Symptoms typically emerge 48 to 96 hours after the last drink and include severe agitation, confusion, visual hallucinations (such as seeing insects or spiders, known as formication), and marked autonomic hyperactivity (high fever, tachycardia, hypertension, and diaphoresis). The pathophysiology involves a hyper-excitable central nervous system due to the abrupt removal of alcohol's inhibitory effects on down-regulated GABA-A receptors, combined with an up-regulation of excitatory NMDA glutamate receptors. Immediate administration of intravenous benzodiazepines is the gold standard of care. Benzodiazepines substitute for the absent alcohol by stimulating GABA-A receptors, thereby reducing agitation, controlling autonomic instability, and preventing withdrawal seizures.

Adım Adım Çözüm

1
Identify the patient's clinical syndrome based on the timeline of symptoms and physical exam findings.
The patient presents with severe agitation, visual hallucinations (formication), and profound autonomic hyperactivity (fever, tachycardia, hypertension) exactly 72 hours after abrupt cessation of heavy alcohol use. This is the classic presentation of delirium tremens (DTs).
Accurate diagnosis of the toxidrome or withdrawal state is required to initiate life-saving, specific pharmacological management.
2
Determine the first-line, acute pharmacological treatment for delirium tremens.
Long-acting benzodiazepines, such as intravenous diazepam or chlordiazepoxide, are the gold standard treatment.
Benzodiazepines mitigate the severe central nervous system excitation caused by GABA down-regulation during chronic alcohol use, thereby controlling agitation and preventing withdrawal seizures and cardiovascular collapse.

Anahtar Kavram

Delirium tremens typically occurs 48 to 96 hours after alcohol cessation and is characterized by autonomic hyperactivity and delirium. It is a life-threatening medical emergency treated with intravenous benzodiazepines.
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Substance-Related and Addictive Disorders

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