Violence Risk Assessment

Violence Risk Assessment - Danger Detectives Intro

• Violence: Intentional act to harm self/others.
• Aggression: Hostile behaviour; readiness to attack.
• Risk Assessment: Evaluating future violence probability.
• Importance: Crucial in emergency psychiatry for safety of patient, staff, and public; guides intervention.
• Risk Horizons:
  • Imminent: Immediate threat (minutes/hours).
  • Short-term: Near future (days/weeks).
  • Long-term: Extended period (months/years).

⭐ Accurate violence risk assessment is a cornerstone of emergency psychiatric care, directly impacting patient and public safety.

Risk Factors - Clues to Crisis

• Static (Historical/Unchangeable):
  • Past violence (strongest predictor)
  • Young age (<40), male
  • Substance abuse history
  • Psychopathy/ASPD
  • Early major mental illness onset
• Dynamic (Current/Changeable):
  • Active psychosis (command hallucinations, paranoia)
  • Impulsivity, agitation, anger
  • Medication/treatment non-adherence
  • Recent stressors (job, money, legal)
  • Weapon access
  • Acute substance use/withdrawal
• Clinical & Contextual:
  • Poor insight, poor judgment
  • Poor social support, unstable housing
  • Perceived threat/provocation; victim history

⭐ Past history of violence is the single most important predictor of future violence.

Assessment Approaches - Danger Meter Methods

• Unstructured Clinical Judgment: Clinician's experience-based intuition; flexible but subjective, prone to bias.
• Actuarial Tools: Statistical algorithms (e.g., VRAG - Violence Risk Appraisal Guide) predict risk using fixed historical factors.
  • Limitations: Rigid, may not generalize well to individuals or changing situations.
• Structured Professional Judgment (SPJ): Blends clinical judgment with validated risk factors. Tools: HCR-20 V3, START (Short-Term Assessment of Risk and Treatability), BVC (Broset Violence Checklist - for imminent risk).

Overall Assessment Process:

⭐ HCR-20 V3 (Historical, Clinical, Risk Management-20) is a leading SPJ tool, assessing 20 items for comprehensive risk evaluation.

Management Strategies - Crisis Control Tactics

• Non-Pharmacological First:
  • De-escalation: calm, respectful communication, personal space.
  • Environmental safety: remove risks (e.g., ligatures, weapons), ensure team safety & clear exit.
• Pharmacological (Rapid Tranquilization - RT): Rapid calming if de-escalation fails. Avoid over-sedation.
  • Oral (if cooperative) / IM.
  • Benzodiazepines: e.g., Lorazepam (2-4mg).
  • Antipsychotics: e.g., Haloperidol (5-10mg), Olanzapine (5-10mg).
• Seclusion & Restraint:
  • Last resort for imminent harm to self/others.
  • Legal: MHA 2017 guidelines; meticulous documentation.
  • Monitor vitals & CMS (Circulation, Motion, Sensation) regularly.
• Safety Planning: Collaborative post-crisis plan for prevention.

⭐ Lorazepam: preferred for RT with hepatic issues or substance intoxication (e.g., alcohol withdrawal) due to glucuronidation metabolism & shorter half-life than diazepam.

Medico-Legal Aspects - Rules of Engagement

• MHCA 2017: Mandates emergency treatment protocols, restraint/seclusion guidelines.
• Prioritize least restrictive alternative always.
• Duty to Protect/Warn: Balance confidentiality with public safety (Tarasoff principle, nuanced in India).
• Documentation: Meticulous, contemporaneous records are essential.

⭐ Under MHCA 2017, emergency treatment without consent is permissible for up to 72 hours if there's immediate risk to self/others or property.

High‑Yield Points - ⚡ Biggest Takeaways

• Past violence is the strongest predictor of future violence.
• Evaluate static (history, demographics) and dynamic (symptoms, substance use, insight) risk factors.
• Structured Professional Judgment (SPJ) tools (e.g., HCR-20) aid clinical assessment.
• Imminent risk requires immediate safety planning: de-escalation, medication, possible involuntary admission.
• Duty to warn/protect may override confidentiality for specific, identifiable threats.
• Active psychosis and substance intoxication/withdrawal significantly ↑ risk.