A 32-year-old woman with Bipolar Disorder I presents to the emergency department with acute mania: elevated mood, flight of ideas, decreased need for sleep (2 hours), and increased goal-directed activity for 5 days. She is not on any mood stabilizer. Vital signs are stable, physical examination is unremarkable, and basic metabolic panel is normal. What is the most appropriate immediate next step in management?

Question

Accepted Answer

B. Administer intramuscular haloperidol 5 mg and admit for inpatient stabilization. ## Clinical Scenario Analysis This patient presents with **acute mania** (elevated mood, flight of ideas, markedly decreased need for sleep, increased goal-directed activity for 5 days) in the context of Bipolar Disorder I with no current mood stabilizer coverage. The acute presentation and behavioral dyscontrol warrant **rapid stabilization**. ## Why Intramuscular Haloperidol + Admission Is Correct **Key Point:** Acute mania with behavioral dyscontrol and no current mood stabilizer requires immediate pharmacological intervention and inpatient monitoring. **High-Yield:** In acute mania, the first-line approach is: 1. **Rapid tranquilization** with an antipsychotic (haloperidol IM, olanzapine IM, or risperidone IM) to control agitation and psychotic features if present. 2. **Inpatient admission** to ensure safety, medication compliance, and titration of mood stabilizers. 3. **Concurrent mood stabilizer initiation** (lithium or valproate) once acute symptoms are controlled. **Clinical Pearl:** IM antipsychotics work faster than oral formulations in acute agitation and are preferred when rapid behavioral control is needed. Haloperidol 5 mg IM is a standard dose for acute mania in emergency settings. **Mnemonic: MANIA Management** — **M**ood stabilizer (lithium/valproate), **A**ntipsychotic (oral or IM), **N**eed for inpatient care, **I**ntervention urgently, **A**void monotherapy with benzodiazepines. ## Management Algorithm for Acute Mania ```mermaid flowchart TD A[Acute Mania Presentation]:::outcome --> B{Behavioral Control?}:::decision B -->|Severe agitation/dyscontrol| C[IM Antipsychotic
Haloperidol/Olanzapine]:::action B -->|Mild-moderate| D[Oral Antipsychotic]:::action C --> E[Admit to Inpatient Unit]:::action D --> F{Outpatient feasible?}:::decision F -->|Yes| G[Close outpatient follow-up]:::action F -->|No| E E --> H[Initiate/optimize mood stabilizer
Lithium or Valproate]:::action H --> I[Discharge when stable
on mood stabilizer]:::outcome ``` ## Why Other Options Are Suboptimal | Option | Problem | |--------|----------| | Lithium monotherapy outpatient | Lithium takes 5–7 days to show effect; acute mania requires immediate control. No rapid tranquilization. Outpatient management inappropriate for acute mania. | | Valproate monotherapy outpatient | Valproate also requires several days to reach therapeutic levels. Does not address acute behavioral dyscontrol. Outpatient setting unsafe for acute mania. | | Lorazepam monotherapy | Benzodiazepines alone do NOT treat the underlying mood disorder; they only sedate. Inappropriate as sole therapy. Risk of dependence. | ## Standard Acute Mania Management Sequence 1. **Immediate:** IM antipsychotic for rapid tranquilization. 2. **Concurrent:** Inpatient admission for safety and monitoring. 3. **Within 24–48 hours:** Initiate mood stabilizer (lithium or valproate). 4. **Ongoing:** Optimize mood stabilizer dose; taper antipsychotic once mood stabilizer is therapeutic. 5. **Discharge:** When acute symptoms resolve and mood stabilizer is established.

Answer

A. Initiate lithium 900 mg daily and schedule follow-up in 2 weeks

Answer

C. Start valproate 500 mg twice daily and monitor outpatient response over 3 days

Answer

D. Prescribe lorazepam 2 mg three times daily as monotherapy and reassess in 1 week

Explanation

Clinical Scenario Analysis

Why Intramuscular Haloperidol + Admission Is Correct

Management Algorithm for Acute Mania

Why Other Options Are Suboptimal

Standard Acute Mania Management Sequence

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Option	Problem
Lithium monotherapy outpatient	Lithium takes 5–7 days to show effect; acute mania requires immediate control. No rapid tranquilization. Outpatient management inappropriate for acute mania.
Valproate monotherapy outpatient	Valproate also requires several days to reach therapeutic levels. Does not address acute behavioral dyscontrol. Outpatient setting unsafe for acute mania.
Lorazepam monotherapy	Benzodiazepines alone do NOT treat the underlying mood disorder; they only sedate. Inappropriate as sole therapy. Risk of dependence.