## Diagnosis: Alcohol Withdrawal with Hallucinations Progressing to Delirium Tremens **Key Point:** This patient presents with classic features of alcohol withdrawal syndrome (tremor, autonomic hyperactivity, confusion, visual hallucinations) occurring 36 hours post-cessation—the typical timeline for hallucinosis and early delirium tremens. The fever, tachycardia, and disorientation indicate progression to severe withdrawal. **High-Yield:** Benzodiazepines are the gold standard for acute alcohol withdrawal and delirium tremens. They provide: - Seizure prophylaxis - Autonomic stabilization - Anxiolysis and sedation - Treatment of hallucinations and confusion **Clinical Pearl:** Lorazepam (a long-acting benzodiazepine) is preferred over short-acting agents in alcohol withdrawal because it provides more sustained CNS depression and is safer in patients with hepatic impairment. IV administration ensures rapid onset in severe cases. ## Why Lorazepam 4 mg IV is Correct 1. **Benzodiazepines are first-line** for alcohol withdrawal syndrome and delirium tremens [cite:Harrison 21e Ch 394] 2. **Lorazepam dosing:** 4 mg IV is appropriate for severe withdrawal; repeated doses or continuous infusion may be needed based on CIWA-Ar score 3. **Addresses all symptoms:** seizure risk, autonomic instability, hallucinations, and confusion 4. **Hepatic safety:** Lorazepam undergoes glucuronidation (not hepatic oxidation), making it safer in cirrhotic patients ## Supportive Management - **Thiamine 100 mg IV/IM** should be given concurrently to prevent Wernicke encephalopathy (but is NOT the primary treatment for acute withdrawal) - **Glucose** only after thiamine (to prevent precipitation of Wernicke in thiamine-deficient patients) - **Correction of electrolytes:** Mg²⁺, K⁺, phosphate (common deficiencies in chronic alcohol use) - **Monitoring:** Continuous cardiac monitoring, frequent vital signs, CIWA-Ar scoring for titration
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