II. Epidemiology
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Incidence in U.S.
- Suicidal Ideation is present in up to 8% of Emergency Department patients
- Suicide rates increased 20-30% between 2005 and 2015
- Deaths in U.S. (2017): 47,000
- Ages 5-11 years: 0.1 per 100,000
- Overall suicide Incidence has not changed for ages 5-11 between 1993 and 2012
- However Incidence has increased in black children, and decreased in white children
- Bridge (2015) JAMA Pediatr 169(7): 67307 [PubMed]
- Ages 10-74 years: 13 per 100,000
- Suicide rate increased 25% from 10.5 per 100,000 in 1999, to 13 per 100,000 in 2014
- Highest Suicide rate increase was for age 10-14 in females, and age 45-64 in males
- Gender
- Women are twice as likely as men to attempt Suicide
- Men are four times more likely to die of Suicide
- Age
- Highest Suicide rates have been in ages 45-54 years, and 75-84 years historically
- Highest rates of Suicidal Ideation, planning and attempts occurs in ages 18 to 25 years
- Suicide in the second leading cause of death in ages 10 to 34 years old
- Most common methods of completed Suicide
- Children
- Suffocation by hanging (belt or electric cord)
- Adolescents and Adults
- Firearms (50%, esp. males)
- Hanging or Suffocation (28%, esp. males)
- Medication Overdose or Poisoning (14%, esp. females)
- Children
- References
- Increase in Suicide in the U.S. from 1999 to 2014 (CDC)
- National Suicide Statistics (CDC)
III. Risk Factors
- Current mental status
- Biologic factors
- Age 20 to 24 and over age 65 years
- Native American or native alaskan
- Caucasian
- Male gender (especially elderly male)
- Psychiatric factors
- Psychosis or Psychotic symptoms
- Highest risk with command Hallucinations (Hallucinations that instruct self harm)
- Impulsive Behavior
- Previous Suicide attempt within last 2 years
- Highest risk for adolescent Suicide is a prior attempt
- Family History of completed Suicide
- Major Depression symptoms
- Anhedonia
- Hopelessness
- Insomnia
- Irritability
- Personality Disorders (associated with increased suicidal gestures, with risk of lethality)
- Comorbid mental illness
- Substance Abuse
- Alcohol Dependence is associated with 9 fold increased Suicide Risk
- Acute Alcohol Intoxication substantially increases Suicide Risk
- One third of attempted Suicide patients drink Alcohol before attempt
- Major Depression
- Severe Anxiety Disorder (including PTSD)
- Bipolar Disorder
- Schizophrenia
- Substance Abuse
- Psychosis or Psychotic symptoms
- Social factors
- Solitary lifestyle or limited social support (e.g. divorced or widowed patient)
- Homosexual or Transgender identity
- Available lethal means to carry out a Suicide plan (e.g. weapons in home)
- Rural residence
- Stressful life event or recent acute psychosocial stressors ("tipping points")
- Relationship problems
- Financial or legal trouble
- Public humiliation or shame
- Suicide "contagion" in teenagers
- Completed Suicide in others (at school, in media), may increase Suicidality risk in others
- Highest risk among other children with depressed mood or social isolation
- Comorbid medical conditions
- Associated chronic medical condition (e.g. COPD, Chronic Pain, Traumatic Brain Injury)
- Seizure Disorder (3 fold higher risk)
- Medications associated with increased Suicidal Ideation
IV. Precautions
- Be alert for depressed mood in all patients
- Inquire about suicidal thoughts in depression
- Asking about Suicide does not increase its risk
- Guns
- Poisoning
- Hanging
- Protect the patient and staff during evaluation
- Keep patient under one-to-one observation during acute Suicidality evaluation
- Remove any items of potential self-harm (belts, shoelaces, sharp instruments)
- Secure purses and other belongings
- Emergency department patients change into scrub-like clothing
- Establish a therapeutic alliance
- Explain the anticipated course of evaluation
- Express empathy
- Provide basic comforts (e.g. food and drink)
- Attempt Verbal De-escalation before use of Chemical Restraints
V. Evaluation: General
- See Emergency Psychiatric Evaluation
- Patient must be alert, Clinically Sober and cooperative for adequate evaluation
- Clinical sober patients should have normal coordination, cognition and a lack of emotional lability
- No specific number defines Clinical Sobriety
- Clinical sober patients should have normal coordination, cognition and a lack of emotional lability
- Consider screening tools
- Avoid confrontational approach
- Obtain patient comfort and trust first
- Maintain culturally sensitive approach
- Maintain good eye contact
- Sample questioning method:
- Have there been recent CHANGES with family, friends, home or work?
- What are your plans for the FUTURE?
- Do you ever lose HOPE with your current situation?
- What do you THINK ABOUT when feeling down?
- Are you IMPULSIVE in your decisions or behavior?
- Do you ever consider Running AWAY from your problems?
- Have you had DEPRESSION, ANXIETY or OTHER mental illness in the past?
- Have you ever thought of HURTING yourself?
- Have you ever thought of KILLING yourself?
- How have you PLANNED to kill yourself?
- Have you PREPARED to do this?
- Has any FAMILY MEMBER attempted Suicide in the past?
- Have YOU ever attempted Suicide in the past?
- Are you CURRENTLY thinking about death or harming yourself?
- Do you use Alcohol or Illicit DrugS?
- Do you make IMPULSIVE decisions or actions?
- Do you have WEAPONS, POISONS in PILLS at home you would use to harm yourself?
- Have you shared your self-harm thoughts with OTHERS?
- Do you have FRIENDS or FAMILY with whom you are close?
- What would happen to your FAMILY without you?
- What has PREVENTED you from committing Suicide?
- References
VI. Evaluation: Risk Assessment
- See Modified MSPS Suicide Risk Assessment (Modified SAD PERSONS)
- Precautions
- Defining low risk is challenging and despite best efforts, half of low risk stratified patients go on to Suicide
- Suicidal gestures may progress to lethality
- Take each suicidal gesture seriously, addressing risks (esp. in Personality Disorder)
- Static or Stable Risks
- History of mental illness (especially newly diagnosed)
- Chemical Addiction
- Personality Disorder
- Teenagers and the elderly (esp. white elderly males)
- Prior Suicide attempts (high risk)
- Family History of completed Suicide attempts
- Gay, lesbian, Transgender or bisexual youth
- High Risk Dynamic factors
- Prepared or attempted with highly lethal means (guns or hanging)
- Planned or rehearsed Suicide in advance
- Attempts to avoid discovery of suicidal plans (e.g. at remote location)
- Suicide note left to put affairs in order
- Anger in response to failed Suicide attempt
- Subjective belief in the high lethality of their attempt (regardless of the actual lethality)
- Moderate Risk Dynamic factors
- Use of limited number of medications or illicit substances in Suicide attempt
- Suicide attempt in location with high chance of discovery (or calling for help)
- Suicide note with overly manipulative or attention-getting language
- Low Risk Dynamic factors
- Small number of pills taken
- Suicide attempt in front of another person
- Glad that Suicide attempt was unsuccessful
- Protective Factors
- Strong social support system (friends, family)
- Expressed reasons for living
- Optimism about life
- Family responsibility (esp. to children)
VII. Management
- See Emergency Psychiatric Evaluation
- Involve a mental health specialist in disposition
- Manage acute medical complications from attempted Suicide
- See Unknown Ingestion
- See Near-Hanging
- See Penetrating Trauma
- Suicide techniques are described online (Suicide kits) with directions on self injury cocktails
- Always consider Acetaminophen Poisoning and Salicylate Poisoning
- Sodium Nitrite Poisoning
- Presents with Methemoglobinemia, Tachypnea, Altered Level of Consciousness, Seizures
- Carbon Monoxide Poisoning
- Results from ingestion of formic acid and sulfuric acid (sulphuric acid)
- Hydrogen Sulfide Poisoning
- Acid (e.g. toilet bowl cleaner) combined with sulfur-containing molecule (e.g. Pesticides, fungicide)
- Carbon Dioxide Poisoning
- Citric acid and Baking Soda inhaled with head in a bag, while in an enclosed space
- References
- Swadron and Nordt (2022) EM:Rap 22(6): 5-7
- Hospitalize imminently suicidal patients
- High risk dynamic factors present (see above)
- Attempt was violent, near-lethal or premeditated
- Persistent plan or intent to die is present
- Unable or unwilling to follow a safety plan
- Severe hopelessness
- Limited family or social support or unstable living situation
- Impulsive behavior, severe Agitation, Psychosis, poor judgement or refusing help
- Unreliable for follow-up or monitoring
- Alterered mental status (acute Delirium) requires additional workup and medical monitoring
- Evaluate patient home safety
- Patient has decision making capacity
- Patient has the ability for adequate self care
- Remove all lethal means and weapons from the home, especially firearms (90% fatality rate)
- Store firearms outside the home (locked, unloaded and separate from ammunition)
- Also remove knives and medications that might be used for Suicide
- Family and friend involvement is critical
- Patient will cooperate with treatment plan and implementation including close interval follow-up
- Treat underlying psychiatric illness
- See Depression Management
- Treat Substance Abuse
- Instill hope that this will get better
- Reduce the shame and stigma associated with mental health crisis
- Initiate psychological counseling with rapid referral to outpatient psychiatric care (within 7 days)
- Lithium reduces Suicide Risk and mortality in Bipolar Disorder (as well as unipolar depression)
- Exercise caution in adolescents and young adults on Selective Serotonin Reuptake Inhibitors (SSRI)
- SSRI has been associated with increased Suicidality in first few months after starting medication
- Limit prescriptions to 30 day supply and schedule frequent visits and phone calls
- https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/suicidality-children-and-adolescents-being-treated-antidepressant-medications
- Establish an outpatient printed safety plan
- Contrast the Safety Plan with the "contract for safety" which is no longer recommended
- Recognize Suicide warning signs
- Identify coping strategies
- Social support and social safety net (e.g. family, close friends, other medical providers)
- Crisis contacts
- Family or mental health
- Local crisis resources, local emergency department or 911
- Suicide call or text line (988)
- Remove access to lethal means of Suicide (e.g. medications, firearms)
- Some U.S. States have specific Red Flag laws
- Form Template
VIII. Prevention
- Talk about Suicide with children, teenagers and adults
- Talking about Suicide does not increase its risk
- Screening does not increase Suicide Risk
- Family members and friends should be aware of the warning signs of Major Depression and Suicidality
- See Psychological First Aid
- Social isolation or withdrawn
- Increased stressors (see Risk Factors above)
- Review safety plans for Suicidality (see above)
- Safe places with school, family or friends
- Emergency department evaluation
- Suicide Hotline
IX. Complications: Completed Suicide
- Address Bereavement in surviving family members
- Anticipate the self-blame and shame that the surviving family may feel
- Offer support services
X. Resources
- American Foundation for Suicide Prevention
- Suicide Prevention Resource Center
- Columbia Suicide Severity Rating Scale (C-SSRS)
- Suicide and Crisis Lifeline (National Suicide Prevention Lifeline)
- https://988lifeline.org/
- Text: 988
- Phone: 800-273-TALK (8255)
- Crisis Text Line
- Text "HOME" to 741741
XI. References
- Grover and Onyinyechi (2021) Crit Dec Emerg Med 35(3): 3-7
- Horning and White (2020) Crit Dec Emerg Med 34(2): 3-10
- Wang (2018) Crit Dec Emerg Med 32(5):15
- Weingart, Pallaci, Bridge and Stout in Herbert (2017) EM:Rap 17(11): 12-13
- Hamilton (2000) Postgrad Med 108(6):81-7 [PubMed]
- Hirschfeld (1997) N Engl J Med 337(13): 910-5 [PubMed]
- Maris (2002) Lancet 360(9329):319-26 [PubMed]
- (2004) Ann Intern Med 140(10): 820-1 [PubMed]
- Norris (2012) Am Fam Physician 85(6): 602-5 [PubMed]
- Sall (2019) Ann Intern Med 171(5): 343-53 [PubMed]
- Stovall (2003) Am Fam Physician 68(9):1814-8 [PubMed]