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CEN · 9% of the exam

Mental Health Emergencies practice questions

10 free Mental Health Emergencies questions for the Certified Emergency Nurse (CEN) exam, each with the correct answer and an explanation for every option.

What this domain covers

Assessing and managing patients in psychiatric or behavioural crisis while keeping them and staff safe.

Exam weight
9%
On a real exam
≈ 16 questions
In our bank
46 questions

Topics that come up most

  • Suicide risk assessment and safety measures
  • Aggressive behaviour and de-escalation
  • Restraint and seclusion requirements
  • Psychosis, anxiety and depression
  • Abuse, neglect and situational crisis

How to study it

For each scenario ask first what keeps the patient and staff safe; the correct answer usually puts safety and the least restrictive option ahead of everything else.

Sample Mental Health Emergencies questions

Try each one before opening the answer. Original questions written to the official exam objectives.

  1. Question 1

    At triage, a patient tells the nurse they plan to kill themselves tonight with pills they have saved at home. The patient's backpack has not been searched. Which action should the nurse take first?

    • APlace the patient in a safe room, secure belongings that could be used for self-harm, and begin continuous observation
    • BComplete a standardized suicide risk assessment tool before changing the patient's room or level of observation
    • CRequest an emergency psychiatric consultation and keep the patient in the waiting room until the consultant arrives
    • DAsk the accompanying family member to go home and lock up medications and firearms before the patient returns
    Show answer and explanation

    Answer: A) Place the patient in a safe room, secure belongings that could be used for self-harm, and begin continuous observation

    When a patient discloses a suicide plan, the first nursing priority is immediate safety: remove possible means of self-harm and provide continuous observation. Assessment, consultation and home safety planning come after that.

    • ACorrect. A stated plan means immediate danger. The first priority is to keep the patient from harming themselves while in the ED: remove possible means (including unsearched belongings) and never leave the patient unobserved.
    • BIncorrect. A full risk assessment is needed, but the patient has already disclosed a plan. Protective measures must not wait for paperwork.
    • CIncorrect. A psychiatric evaluation is appropriate, but leaving the patient unobserved in the waiting room with unsearched belongings is unsafe.
    • DIncorrect. Restricting access to means at home matters for discharge planning, but it does not address the immediate risk in the department.
  2. Question 2

    A neighbor brings in an 82-year-old who lives alone, has no caregiver and manages their own money. The patient is unkempt, has lost significant weight and reports spoiled food and no working heat at home. There are no injuries suggesting trauma. Which concern do these findings most suggest?

    • ACaregiver neglect
    • BSelf-neglect
    • CFinancial exploitation
    • DExpected age-related decline
    Show answer and explanation

    Answer: B) Self-neglect

    An older adult who lives alone and cannot meet their own needs for hygiene, nutrition and safe housing shows signs of self-neglect, which calls for assessment and referral to social services or adult protective services.

    • AIncorrect. Neglect means a caregiver or other responsible person fails to meet the older adult's basic needs. This patient has no caregiver, so the failure to meet basic needs comes from the patient.
    • BCorrect. Self-neglect is an older adult's failure to provide for their own basic needs, such as hygiene, nutrition and a safe home. It calls for further assessment (including cognition and depression) and referral to social services or adult protective services according to state law.
    • CIncorrect. Financial abuse is the improper use of an older adult's money or assets by someone else. Nothing here suggests another person controls the patient's money. It should still be screened for, but it is not what these findings most suggest.
    • DIncorrect. Malnutrition, poor hygiene and an unsafe home are not normal parts of aging. They are safety concerns that need assessment and follow-up.
  3. Question 3

    An older patient developed sudden confusion over hours, with fluctuating attention. This suggests:

    • ADementia
    • BDelirium
    • CNormal aging
    • DDepression
    Show answer and explanation

    Answer: B) Delirium

    • AIncorrect. Dementia develops gradually.
    • BCorrect. Look for underlying causes like infection or medications.
    • CIncorrect. Sudden confusion isn't normal.
    • DIncorrect. The acute onset suggests delirium.
  4. Question 4

    Ketamine is sometimes used for severe agitation. What side effect should the nurse watch for?

    • AHair loss
    • BSevere constipation and urinary retention over the next few days
    • CEmergence reactions and airway issues like laryngospasm
    • DLow blood sugar
    Show answer and explanation

    Answer: C) Emergence reactions and airway issues like laryngospasm

    • AIncorrect. That isn't a concern.
    • BIncorrect. That isn't the main concern.
    • CCorrect. Monitor closely.
    • DIncorrect. That isn't typical.
  5. Question 5

    A patient started on haloperidol 3 days ago arrives with a temperature of 40.2°C (104.4°F), generalized lead-pipe rigidity, diaphoresis, labile blood pressure and confusion. Reflexes are normal and there is no clonus. The patient takes no other medications and has had no recent surgery. Which condition is most likely?

    • ASerotonin syndrome
    • BNeuroleptic malignant syndrome
    • CMalignant hyperthermia
    • DAnticholinergic toxicity
    Show answer and explanation

    Answer: B) Neuroleptic malignant syndrome

    Fever, lead-pipe rigidity, autonomic instability and confusion after starting a dopamine antagonist point to neuroleptic malignant syndrome. Treatment is to stop the drug and give aggressive supportive care, adding bromocriptine or dantrolene in severe cases.

    • AIncorrect. Serotonin syndrome follows serotonergic drug exposure and usually causes hyperreflexia and clonus, with less severe rigidity. Haloperidol is a dopamine antagonist, and this patient has no clonus.
    • BCorrect. Exposure to a dopamine antagonist, followed by fever, severe rigidity, autonomic instability and altered mental status, defines NMS. The nurse should expect the drug to be stopped, plus cooling, fluids and electrolyte correction. Bromocriptine or dantrolene may be added in severe cases.
    • CIncorrect. Malignant hyperthermia is triggered by inhaled anesthetics or succinylcholine, and this patient has had no recent surgery or anesthesia.
    • DIncorrect. Anticholinergic toxicity causes hot, dry skin and usually no marked rigidity. This patient is diaphoretic and has lead-pipe rigidity.
  6. Question 6

    What is malingering?

    • AA delusional belief
    • BAn unconscious physical symptom from stress that the patient can't control
    • CFaking symptoms on purpose for external gain
    • DAn anxiety attack
    Show answer and explanation

    Answer: C) Faking symptoms on purpose for external gain

    • AIncorrect. That's psychosis.
    • BIncorrect. That's conversion.
    • CCorrect. Examples include avoiding work.
    • DIncorrect. That's panic.
  7. Question 7

    A 24-year-old patient arrives at triage with palpitations, chest tightness, shortness of breath and a fear of dying. The patient says, "This is just another one of my panic attacks." What should the nurse do first?

    • AObtain a 12-lead ECG and assess for a medical cause
    • BRequest an order for an oral benzodiazepine for anxiety
    • CCoach slow diaphragmatic breathing to ease the attack
    • DArrange a psychiatric consultation for panic disorder
    Show answer and explanation

    Answer: A) Obtain a 12-lead ECG and assess for a medical cause

    Before attributing chest symptoms to panic, the ED nurse must first rule out medical causes, starting with a 12-lead ECG. A history of panic attacks does not exclude a cardiac or other medical emergency.

    • ACorrect. Panic attacks can mimic a heart attack and other medical emergencies. Cardiac, respiratory, metabolic and substance-related causes must be ruled out before the symptoms are put down to panic.
    • BIncorrect. An anxiolytic may help later, but giving it first assumes the symptoms are psychiatric and can delay finding a dangerous medical cause.
    • CIncorrect. Breathing techniques are a reasonable comfort measure, but they should not come before assessment for cardiac or respiratory causes of chest symptoms.
    • DIncorrect. A referral may be appropriate once medical causes are excluded. A prior panic history does not prove that today's chest symptoms are panic.
  8. Question 8

    An adult ED patient with acute psychosis is placed in four-point restraints after punching a staff member. Under CMS hospital Conditions of Participation, which requirement applies?

    • AThe patient must be seen face-to-face within 1 hour of restraint initiation by a physician/licensed practitioner or a specially trained RN or PA
    • BThe restraint order may be renewed in increments of up to 8 hours for an adult, for a total of 24 hours
    • CIf the patient is also secluded, staff may check on the patient through the door window every 15 minutes
    • DMonitoring may be delegated to any available staff member, such as a sitter, whether or not they have restraint training
    Show answer and explanation

    Answer: A) The patient must be seen face-to-face within 1 hour of restraint initiation by a physician/licensed practitioner or a specially trained RN or PA

    CMS requires a face-to-face evaluation within 1 hour when restraints are used for violent or self-destructive behavior. Monitoring must be done by trained staff at intervals set by hospital policy, and adult orders can be renewed for up to 4 hours at a time.

    • ACorrect. When restraint is used for violent or self-destructive behavior, 42 CFR 482.13(e)(12) requires a face-to-face evaluation within 1 hour of starting the intervention.
    • BIncorrect. Orders for violent or self-destructive behavior can be renewed for up to 4 hours at a time for adults 18 and older (2 hours for ages 9-17, 1 hour for under 9), up to a total of 24 hours.
    • CIncorrect. Restraint and seclusion can be used together only if the patient is monitored continually, either face-to-face by an assigned trained staff member or by trained staff using both video and audio equipment.
    • DIncorrect. Monitoring must be done by a physician, another licensed practitioner, or staff who have completed the restraint and seclusion training required by the regulation, at an interval set by hospital policy.
  9. Question 9

    A 79-year-old widower is brought to the ED by his daughter for several weeks of fatigue, poor appetite, trouble sleeping and vague aches. His medical workup is unremarkable, and he denies feeling sad. Which interpretation is most accurate?

    • AThese physical complaints may be how depression presents in an older adult, so he should be screened for depression
    • BHis denial of sad mood effectively rules out a depressive disorder as the cause of his symptoms
    • CFatigue, appetite loss and sleep changes are expected with aging and need no further evaluation
    • DIf he also shows slowed thinking and poor concentration, this would confirm dementia and exclude depression
    Show answer and explanation

    Answer: A) These physical complaints may be how depression presents in an older adult, so he should be screened for depression

    Depression in older adults often presents with physical complaints such as fatigue, appetite loss and sleep problems rather than sadness. These symptoms overlap with aging and dementia, so the nurse should screen for depression.

    • ACorrect. In older adults, depression often shows up as fatigue, appetite loss, sleep problems and physical complaints rather than reported sadness. This makes it easy to miss unless the nurse screens for it.
    • BIncorrect. Sadness is often not the main symptom in older adults with depression, so denying sad mood does not rule it out.
    • CIncorrect. These symptoms overlap with normal aging, which is exactly why depression in older adults is often overlooked. They should not be dismissed as normal aging.
    • DIncorrect. Depression in older adults can cause cognitive symptoms and may look like dementia. Cognitive slowing does not exclude depression.
  10. Question 10

    A 17-year-old with severe anorexia nervosa is admitted from the ED and started on oral and enteral nutrition. On day 3 she develops generalized weakness, peripheral edema and new cardiac dysrhythmias. Which laboratory abnormality is the hallmark of the complication she is most likely experiencing?

    • AHyperkalemia
    • BHypophosphatemia
    • CHypernatremia
    • DHypercalcemia
    Show answer and explanation

    Answer: B) Hypophosphatemia

    Refeeding syndrome happens when nutrition is restarted in a malnourished patient. Insulin drives phosphate, potassium and magnesium into cells, and hypophosphatemia is the hallmark. Electrolytes need close monitoring and feeding should be advanced slowly.

    • AIncorrect. When feeding resumes, insulin release drives potassium into the cells, so potassium tends to fall (hypokalemia), not rise. The dysrhythmias come from low potassium and magnesium.
    • BCorrect. This is refeeding syndrome. Insulin released with renewed carbohydrate intake shifts phosphate into cells and drains already depleted stores. Low phosphate is the hallmark finding, often with low potassium, low magnesium and thiamine deficiency.
    • CIncorrect. Refeeding causes sodium and fluid retention, which explains the edema, but high sodium is not the defining lab abnormality.
    • DIncorrect. High calcium is not a feature of refeeding syndrome. The key shifts are low phosphate, low potassium and low magnesium.

Mental Health Emergencies: FAQs

How much of the CEN exam is Mental Health Emergencies?

Mental Health Emergencies is 9% of the CEN exam by the official exam guide's weighting, which on a 175-question form works out to roughly 16 questions. The real exam's exact split varies by form.

What does the Mental Health Emergencies domain cover?

Assessing and managing patients in psychiatric or behavioural crisis while keeping them and staff safe.

How should I study Mental Health Emergencies for CEN?

For each scenario ask first what keeps the patient and staff safe; the correct answer usually puts safety and the least restrictive option ahead of everything else.

Where can I practise more Mental Health Emergencies questions?

This page has 10 free Mental Health Emergencies questions with answers. The ExamWize CEN question bank has 46 questions in this domain. Every practice exam result breaks your score down by domain, and Review Mode re-drills the questions you missed.

Get Mental Health Emergencies exam-ready

The full CEN bank has 46 Mental Health Emergencies questions. Timed practice exams match the real exam's length and domain weights, every result shows your score per domain, and Review Mode re-drills the questions you missed.

Not affiliated with BCEN; questions are original, written from the official exam outline, and never copied from the real exam.