USMLE Prep - Medical Reference Library

Alcohol Withdrawal — ED to Inpatient Management

System: Emergency Medicine • Reviewed: Aug 31, 2025 • Step 1Step 2Step 3

Synopsis:

Use symptom triggered benzodiazepines guided by CIWA when appropriate; give thiamine before glucose; manage severe or refractory cases with phenobarbital or ICU care.

Key Points

  • Stabilize ABCs; begin targeted evaluation without delaying life-saving therapy.
  • Use system-specific risk tools to guide testing and disposition.
  • Order high-yield tests first; escalate imaging when indicated.
  • Start evidence-based initial therapy and reassess frequently.

Algorithm

  1. Primary survey and vitals; IV access and monitors.
  2. Focused history/physical; identify red flags and likely etiologies.
  3. Order system-appropriate labs and imaging (see Investigations).
  4. Initiate guideline-based empiric therapy (see Pharmacology).
  5. Reassess response; arrange consultation and definitive management.

Clinical Synopsis & Reasoning

For Alcohol Withdrawal Ed Inpatient, frame the differential by acuity and pathophysiology, then align diagnostics to the leading hypotheses. Prioritize stabilization while obtaining high‑yield studies such as CBC/BMP (Baseline labs), CXR/targeted imaging (Common ED complaints), Troponin/EKG (chest pain) (ACS rule-out). Incorporate bedside imaging and targeted labs to define severity and identify complications; synthesize results with clinical trajectory to refine the working diagnosis and disposition needs.


Treatment Strategy & Disposition

Initiate disease‑directed therapy alongside supportive care, titrating to objective response. Pharmacologic options commonly include Analgesics, Antiemetics. Use validated frameworks (e.g., Common Benzodiazepine Strategies) to guide escalation and site of care. Address precipitating factors, de‑escalate empiric therapies with data, and arrange follow‑up for monitoring and risk‑factor modification; admit patients with instability, high risk of deterioration, or needs for close monitoring.


Epidemiology / Risk Factors

  • Varies by presentation; age/comorbidities matter

Investigations

TestRole / RationaleTypical FindingsNotes
CBC/BMPBaseline labsAbnormalities
CXR/targeted imagingCommon ED complaintsFindings vary
Troponin/EKG (chest pain)ACS rule-outMI changesUse risk tools

Common Benzodiazepine Strategies

DrugTypical UseNotes
DiazepamFront loading in EDLong half life; avoid in severe liver failure
LorazepamSymptom triggered or fixedPreferred in liver disease
PhenobarbitalAdjunct or alternativeUse with caution; monitor respiration

Pharmacology

MedicationMechanismOnsetRole in TherapyLimitations
Benzodiazepine (diazepam/lorazepam)GABA-A potentiationMinutesSymptom-triggered therapyRespiratory depression; ED use
Thiamine (before glucose)Cofactor replacementHoursPrevent Wernicke’sAnaphylaxis (rare IV); ED use
Adjuncts (phenobarb, dexmedetomidine)GABAergic/α2MinutesRefractory casesHypotension; ED use

Prognosis / Complications

  • Outcomes tied to emergency and timeliness of care

Patient Education / Counseling

  • Explain red flags and when to seek emergent care.
  • Reinforce medication adherence and follow-up plan.

Notes

Replete magnesium and phosphate. Avoid antipsychotics as sole agents for withdrawal; they are adjuncts for agitation after benzodiazepines.


References

  1. ASAM Alcohol Withdrawal Guideline — Link
  2. ACEP Clinical Policy — Link