A 42-year-old male construction worker from Delhi presents to the emergency department with agitation, tremors, and diaphoresis. He reports consuming 8–10 pegs of whisky daily for the past 15 years. His last drink was 18 hours ago. Vital signs: BP 148/92 mmHg, HR 112/min, RR 22/min, temperature 37.8°C. On examination, he has coarse tremor of the hands, hyperreflexia, and mild disorientation. Blood glucose 118 mg/dL, serum electrolytes normal. What is the most appropriate next step in management?

Explanation

## Alcohol Withdrawal Syndrome: Acute Management **Key Point:** This patient presents with early alcohol withdrawal syndrome (AWS) — tremor, autonomic hyperactivity, and altered mental status 18 hours after cessation of heavy daily alcohol use. The clinical picture is consistent with hallucinosis or impending delirium tremens. ### Pathophysiology of Alcohol Withdrawal Chronic alcohol use causes: 1. Downregulation of GABA~A~ receptors (inhibitory) and upregulation of glutamate (excitatory) signaling 2. Upon cessation, loss of alcohol's CNS depressant effect unmasks glutamate hyperexcitability 3. Results in autonomic hyperactivity, tremor, hallucinations, and seizures ### Clinical Severity Spectrum | Stage | Timeline | Features | Risk | |-------|----------|----------|------| | **Tremulousness** | 6–24 hrs | Fine tremor, anxiety, diaphoresis, tachycardia | Low | | **Hallucinosis** | 12–48 hrs | Visual/tactile hallucinations, tremor, normal sensorium | Intermediate | | **Withdrawal seizures** | 12–48 hrs | Generalized tonic-clonic, brief, multiple | High | | **Delirium tremens** | 48–96 hrs | Disorientation, autonomic storm, mortality 5–15% if untreated | **Highest** | **High-Yield:** This patient is at **imminent risk of delirium tremens** (18 hrs post-cessation, already showing disorientation and tremor). Immediate benzodiazepine therapy is the standard of care. ### First-Line Management: Benzodiazepines **Clinical Pearl:** Benzodiazepines are the **gold standard** for AWS because they: - Enhance GABA~A~ signaling, restoring inhibitory tone - Prevent seizures and delirium tremens - Reduce mortality from 35% (untreated) to <5% (treated) **Recommended approach:** 1. **Immediate:** Lorazepam 2–4 mg IV/IM stat (rapid onset, short half-life, hepatic metabolism-independent) 2. **Titration protocol:** Repeat lorazepam 1–2 mg every 5–10 min until patient is calm and tremor subsides ("symptom-triggered" dosing is preferred over fixed schedules) 3. **Maintenance:** Continue benzodiazepine (lorazepam, diazepam, or chlordiazepoxide) for 5–7 days with gradual taper 4. **Adjunctive:** Thiamine 100 mg IV/IM daily (prevents Wernicke encephalopathy in malnourished alcoholics) 5. **Supportive:** Correct electrolytes (hypomagnesemia, hypokalemia common), hydration, nutritional support **Mnemonic: CIWA-Ar** — Clinical Institute Withdrawal Assessment for Alcohol scale. Scores ≥8–10 warrant benzodiazepine dosing; scores <8 may be managed with supportive care alone. **Warning:** Do NOT use antipsychotics (e.g., haloperidol) as monotherapy — they lower seizure threshold and worsen outcomes. Reserve for refractory agitation *after* benzodiazepine initiation. --- ## Why the Correct Answer is Correct Lorazepam IV with thiamine is the **evidence-based, guideline-standard** approach for moderate-to-severe AWS. It addresses the underlying GABA deficit, prevents seizures and delirium tremens, and corrects nutritional deficiency in a single protocol. --- ## Why Each Distractor Is Wrong | Option | Reason | |--------|--------| | **Disulfiram 250 mg daily** | Disulfiram is a relapse-prevention agent for *chronic* alcohol use disorder, not acute withdrawal. It is contraindicated in active withdrawal (patient is acutely ill, may not tolerate it, and requires benzodiazepines first). | | **Urgent CT head** | While delirium tremens can mimic intracranial pathology, the clinical presentation (tremor, autonomic signs, disorientation 18 hrs post-cessation in a known heavy drinker) is pathognomonic for AWS. CT is not indicated unless focal neurological signs, head trauma, or atypical features are present. Delays critical benzodiazepine therapy. | | **Naltrexone 50 mg daily** | Naltrexone is an opioid antagonist used for *chronic* alcohol use disorder (reduces craving) and is given *after* detoxification. It is ineffective and inappropriate for acute withdrawal and offers no protection against seizures or delirium tremens. |