Question

A 45-year-old man with a history of heavy weekend alcohol consumption is brought to the emergency department with confusion, hallucinations, and ataxia. His friends report that he had been vomiting for two days and had poor oral intake before the episode. On examination, he is disoriented with horizontal nystagmus and unsteady gait.
Options:

• A. Antipsychotics
• B. Benzodiazepines
• C. IV fluids + Thiamine
• D. Hemodialysis

Hint:

Wernicke Encephalopathy Triad (CAN): Confusion, Ataxia, Nystagmus.
Golden Rule: ALWAYS administer IV Thiamine BEFORE administering Dextrose/Glucose in any suspected alcoholic or malnourished patient to prevent irreversible Korsakoff psychosis.

Answer 1

The Correct Option is C

Concept:
A middle-aged man with a significant history of heavy alcohol abuse presents acutely to the emergency department demonstrating a highly specific triad of neurological deficits: profound encephalopathy (confusion, hallucinations), severe oculomotor dysfunction (horizontal nystagmus), and marked gait ataxia.
The clinical objective is to rapidly recognize this life-threatening neurological emergency and immediately initiate the correct, specific life-saving medical therapy.
Explanation:
• The patient's explicit clinical presentation of confusion, horizontal nystagmus, and an unsteady ataxic gait in the setting of chronic alcohol abuse is the absolute textbook description of Wernicke Encephalopathy (WE).

• Wernicke Encephalopathy is a severe, acute, and potentially reversible neuropsychiatric syndrome caused by a profound depletion and deficiency of Vitamin B1, also known as Thiamine.

• Thiamine is a mandatory enzymatic cofactor essential for cerebral carbohydrate metabolism and cellular energy production.

• Chronic, heavy alcohol consumption leads to severe malnutrition, massively impairs the active intestinal absorption of dietary thiamine, and severely limits the liver's ability to store the vitamin.

• The patient's history of unrelenting vomiting and poor oral intake over the preceding two days served as the acute precipitating event that completely exhausted his already borderline, fragile thiamine reserves, instantly triggering the acute encephalopathy.

• The immediate, most critical, and definitive step in management is the prompt intravenous administration of high-dose Thiamine, provided alongside supportive Intravenous (IV) fluids (Option C) to correct the severe dehydration caused by vomiting.

• It is a strict, cardinal rule in emergency medicine that intravenous Thiamine MUST be administered either before or strictly concurrently with any glucose-containing IV fluids. Administering a glucose load to a thiamine-deficient patient rapidly consumes the last remaining traces of thiamine, catastrophically worsening the encephalopathy and precipitating irreversible brain damage (Korsakoff syndrome).

• Utilizing Antipsychotics (Option A) for his hallucinations is entirely inappropriate and ignores the deadly underlying metabolic crisis.

• While Benzodiazepines (Option B) are the gold standard for treating acute alcohol withdrawal (delirium tremens), the presence of the specific nuchal/gait triad strongly points to WE as the primary acute life-threat that must be treated first with thiamine.
Final Answer:
The clinical triad of confusion, ataxia, and nystagmus indicates Wernicke encephalopathy, mandating the immediate administration of IV fluids and Thiamine.