8.3 Suicide Risk Assessment & Crisis Intervention

Suicide Risk Assessment and Crisis Intervention

Suicide risk assessment is one of the most critical and challenging tasks in clinical medicine. Primary care physicians, emergency doctors, and mental health professionals must be equipped to systematically identify risk factors, conduct direct and compassionate safety assessments, and implement appropriate safety plans or hospitalization protocols.

Epidemiology and Risk Factors

Understanding who is at elevated risk for suicide helps guide the depth of the clinical evaluation. The SAD PERSONS scale is a widely recognized clinical mnemonic that lists established demographic and clinical risk factors for suicide:

• Sex: Male. While females attempt suicide more frequently, males are three to four times more likely to complete suicide because they tend to use more lethal means (e.g., firearms, hanging).
• Age: Younger than 19 or older than 45. Elderly males carry the highest completed suicide rate in many demographics.
• Depression: Diagnosis of depressive illness or bipolar disorder.
• Previous attempt: A history of prior suicide attempts is the single strongest predictor of future completed suicide.
• Ethanol or other substance abuse: Substance use impairs judgment and increases impulsivity.
• Rational thinking loss: Psychosis (e.g., command hallucinations to harm oneself), severe cognitive impairment, or delirium.
• Social support lacking: Living alone, recent divorce, widowhood, or lack of close relationships.
• Organized plan: Having a specific, lethal, and feasible method prepared.
• No spouse: Being single, divorced, or widowed.
• Sickness: Chronic, painful, or terminal physical illnesses (e.g., cancer, chronic pain, end-stage renal disease).

Clinical scoring ranges from 0 to 10. A score of 0–4 suggests low-to-medium risk; 5–6 suggests high risk (strongly consider psychiatric evaluation); 7–10 indicates very high risk (warrants immediate psychiatric hospitalization).

Conducting the Assessment: Direct Questioning

A common clinical misconception is that asking a patient about suicide will "put the idea in their head" or increase their risk. Evidence has repeatedly disproven this. Clinicians must ask direct, clear, and unambiguous questions.

The Clinical Conversation Flow

Start with broad questions and narrow them down based on the patient's responses:

1. Screening for Ideation: "Have you felt that life is not worth living?" or "Have you had thoughts of wishing you would go to sleep and not wake up?"
2. Direct Questioning: "Are you thinking about suicide?" or "Are you thinking about killing yourself?"
3. Assessing the Plan: "Do you have a plan for how you would do this?" and "Do you have access to the materials (e.g., medications, firearms) needed for this plan?"
4. Assessing Intent: "How likely are you to act on these thoughts?" and "What has kept you from acting on them so far?" (identifying protective factors such as family, children, religious beliefs, or future orientation).

Safety Planning vs. Contracting for Safety

For patients determined to be at low-to-moderate risk (who have passive suicidal thoughts but no active plan, intent, or access to means), outpatient management with close follow-up is appropriate.

The Myth of the "No-Harm Contract"

Historically, clinicians used "contracts for safety" (or "no-harm contracts"), where the patient signed a document promising not to harm themselves. Clinical guidelines now strongly discourage this.

• Why they fail: Contracts for safety are not clinically effective, do not reduce suicide rates, and do not protect the clinician from legal liability. They often make the clinician feel falsely secure and can pressure the patient to hide their symptoms to avoid disappointing the provider.

Collaborative Safety Planning

The current gold standard is the Stanley-Brown Safety Planning Intervention, a brief, collaborative clinical tool. The safety plan is written in the patient's own words and includes:

1. Warning Signs: Recognizing personal triggers and changes in mood or behavior that indicate a crisis is developing (e.g., isolation, increased drinking).
2. Internal Coping Strategies: Activities the patient can do independently to distract themselves and calm down (e.g., going for a walk, listening to music, deep breathing).
3. Social Distractions: Places or people that provide a healthy distraction without discussing the crisis (e.g., going to a coffee shop, calling a friend to talk about sports).
4. Supportive Contacts: Family members or friends whom the patient trusts and can ask for direct help during a crisis.
5. Professional Help: Contact details for the patient's psychiatrist, primary care doctor, emergency department, and local crisis hotlines.
6. Lethal Means Restriction: Collaboratively securing or removing any potential means of self-harm from the patient's environment (e.g., locking up medications, removing firearms).

Indications for Referral and Admission

Determining the appropriate level of care is the final, crucial step in suicide crisis intervention.

Criteria for Immediate Psychiatric Hospitalization

A patient must be admitted to an inpatient psychiatric unit (either voluntarily or involuntarily) if they present an imminent risk of self-harm. Key indications include:

• Active suicidal ideation with a clear, lethal plan and immediate intent to act.
• Access to lethal means (e.g., firearms) that cannot be secured.
• Inability or refusal to participate in safety planning or follow safety guidelines.
• Severe, untreated comorbid psychiatric disorders (e.g., active psychosis, severe mania, profound depression, acute substance intoxication).
• Absence of a supportive environment or reliable social contacts to monitor the patient.

Voluntary vs. Involuntary Admission

• Voluntary Admission: The preferred route. The patient agrees to admission, signs consent forms, and participates in their treatment plan.
• Involuntary Admission (Emergency Hold): If a patient meets the criteria for imminent risk but refuses voluntary admission, the physician is legally and ethically obligated to initiate an involuntary psychiatric hold.
  • Criteria: The patient has a mental illness and presents an immediate threat of serious harm to themselves or others, and no less restrictive alternative exists.
  • Process: The physician signs a clinical hold document, authorizing transport by emergency services to a psychiatric facility for a mandatory evaluation period (typically 72 hours).