A 68-year-old man with bipolar I disorder and severe mania presents to the psychiatric emergency department with flight of ideas, grandiose delusions, and aggressive behavior toward staff. He has been on lithium for 15 years but stopped it 3 weeks ago. Serum lithium level is <0.2 mEq/L. Lorazepam and haloperidol have been ineffective over 48 hours. He has a history of myocardial infarction 2 years ago (ejection fraction 45%) and is on metoprolol and lisinopril. Blood pressure is 160/95 mmHg, heart rate 110 bpm. What is the most appropriate next intervention?

Explanation

## ECT in Acute Severe Mania **Key Point:** Electroconvulsive therapy is a first-line intervention for acute, severe, treatment-resistant mania, especially when rapid response is critical and medical comorbidities complicate pharmacotherapy. ### Clinical Justification for ECT in This Case **Indications met:** 1. **Acute severe mania** — flight of ideas, grandiosity, aggression, behavioral dyscontrol 2. **Treatment resistance** — failed lorazepam and haloperidol within 48 hours 3. **Urgency** — dangerous behavior, risk to self and others 4. **Lithium discontinuation crisis** — relapse after 15 years of stability; reinitiation carries risk of toxicity and delayed response 5. **Medical complexity** — recent MI with reduced EF (45%) makes polypharmacy risky; ECT avoids additional drug burden **High-Yield:** ECT is highly effective in acute mania with response rates of 80–90%, often within 3–5 sessions, and is safer than aggressive polypharmacy in cardiac patients. ### Why ECT Over Alternatives in This Patient ```mermaid flowchart TD A[Acute severe mania<br/>+ failed antipsychotics]:::outcome --> B{Medical status?}:::decision B -->|Recent MI, EF 45%| C[Avoid polypharmacy]:::urgent B -->|Stable cardiac| D[Consider pharmacotherapy]:::action C --> E[ECT preferred]:::action D --> F[Valproate or lithium]:::action E --> G[Rapid response<br/>80-90% remission]:::outcome F --> G ``` **Clinical Pearl:** In patients with recent MI and reduced ejection fraction, ECT is safer than adding multiple antipsychotics or mood stabilizers, which increase cardiac burden and drug interactions. ### Comparison: ECT vs. Pharmacological Alternatives | Intervention | Onset | Efficacy in Acute Mania | Cardiac Risk | Monitoring | |--------------|-------|------------------------|--------------|------------| | **ECT** | 3–5 sessions (1–2 weeks) | 80–90% | Low (brief HR/BP spike) | ECG pre-ECT; anesthesia support | | Valproate IV | 24–48 hours | 60–70% | Moderate (hepatotoxicity risk) | LFTs, drug levels, INR | | Lithium reinitiation | 5–7 days | 70–80% | High (arrhythmia risk in post-MI) | Renal function, drug levels | | Add risperidone | 5–7 days | 50–60% | Moderate (orthostasis, arrhythmia) | Metabolic panel, QTc | **Mnemonic: MANIC-ECT** — Mania acute/severe, Antipsychotics failed, Need rapid response, Inadequate cardiac reserve, Catatonia, ECT indicated.