A 38-year-old married man with a 12-year history of bipolar disorder type I presents to the emergency department after a suicide attempt by pesticide ingestion. His wife reports that over the past 3 months he has had two depressive episodes lasting 4–5 weeks each, separated by 2 weeks of euthymia. He lost his job 2 months ago and has been drinking heavily. On mental status examination, he appears tearful, psychomotor retarded, and expresses hopelessness about the future. He denies current command hallucinations but admits to persistent suicidal ideation. His last psychiatric hospitalization was 8 years ago. Which of the following is the SINGLE MOST IMPORTANT risk factor for completed suicide in this patient?

## Suicide Risk Assessment in Bipolar Disorder ### Identifying the Highest-Risk Profile **Key Point:** The combination of **male gender, active suicidal ideation with intent, and a specific lethal method (pesticide ingestion)** represents the highest-risk constellation for completed suicide. This patient has already demonstrated intent through action. ### Risk Stratification in This Case | Risk Factor | Presence | Relative Weight | |---|---|---| | Male gender | Yes | Moderate (3–4× higher completion rate than females) | | Active suicidal ideation + intent | Yes | **Very High** (imminent risk) | | Specific lethal method used | Yes | **Very High** (pesticide = high lethality) | | Bipolar disorder | Yes | Moderate (10–15× higher lifetime risk) | | Recent psychosocial stressor (job loss) | Yes | Moderate | | Alcohol use disorder | Yes | Moderate (increases impulsivity) | | Rapid cycling | Yes | Moderate (associated with higher risk) | | Recent hospitalization | No (8 years ago) | Low | **High-Yield:** The **SAD PERSONS scale** and **Columbia Suicide Severity Rating Scale (C-SSRS)** emphasize that **intent + plan + method** are the strongest predictors of imminent risk. This patient has all three. ### Why This Patient Is at Extreme Risk **Clinical Pearl:** Bipolar men who attempt suicide with highly lethal methods (pesticide, firearms, hanging) and express active intent have a 30–40% risk of completion within 1 year if not intensively managed. The **recent attempt itself** is the single strongest predictor of future completion. **Mnemonic:** **SAD PERSONS** — Sex (male), Age (30–49 highest), Depression, Previous attempt, Ethanol abuse, Rational thought loss, Social support loss, Organized plan, No spouse, Sickness (chronic illness). ### Rapid Cycling: A Confounding Factor Rapid cycling (≥4 mood episodes per year) does increase suicide risk in bipolar disorder, but it is a **chronic vulnerability factor**, not an acute precipitant. The **acute intent + method + recent attempt** supersedes it in predicting imminent completion risk. ### Alcohol Use: A Disinhibitor, Not the Primary Driver Alcohol lowers impulse control and increases access to lethal means, but it is a **facilitator** of suicide, not the primary risk factor. Without the underlying intent and plan, alcohol alone would not drive this risk. **Citation:** Harrison 21e Ch 397; American Psychiatric Association Practice Guideline for Suicide Risk Assessment (2003).