9.2 Psychiatric-Mental Health Nursing, Psychopharmacology & Crisis Intervention
Key Takeaways
The Mental Status Examination (MSE) provides a systematic clinical appraisal of appearance, behavior, speech, mood, affect, thought process, thought content, perceptual disturbances, insight, and judgment.
Managing acute bipolar mania mandates a low-stimulus environment, simple concrete communication, high-calorie portable finger foods, and careful lithium surveillance (therapeutic index: 0.6 to 1.2 mEq/L; toxicity >=1.5 mEq/L).
Therapeutic communication with a client experiencing auditory hallucinations validates emotional distress and gently reorients to reality without reinforcing, validating, or arguing against the false sensory perception.
Antipsychotic pharmacotherapy carries risk of Extrapyramidal Symptoms (acute dystonia, akathisia, parkinsonism, tardive dyskinesia) and life-threatening Neuroleptic Malignant Syndrome (NMS: extreme fever, lead-pipe rigidity, autonomic instability), treated emergently with dantrolene or bromocriptine.
Seclusion and mechanical restraint are strictly measures of last resort requiring written physician orders, continuous 1-on-1 observation, neurovascular and comfort assessments every 15 minutes, and rapid release upon regaining behavioral control.
Psychiatric-Mental Health Nursing, Psychopharmacology & Crisis Intervention
Clinical Overview: Psychiatric-mental health nursing focuses on therapeutic alliances, structured mental status appraisal, psychopharmacological monitoring, and rapid crisis de-escalation. Because psychiatric illnesses involve complex neurobiological dysregulation, nurses must maintain objective surveillance, identify medication toxicities (such as lithium toxicity and Neuroleptic Malignant Syndrome), and apply non-coercive crisis interventions while upholding client rights on the RENR.
The Mental Status Examination (MSE) & Suicide Risk Assessment
The Mental Status Examination (MSE) provides an objective assessment of psychological functioning:
- Appearance & Behavior: Hygiene, dress appropriateness, eye contact, and motor activity (agitation vs. retardation).
- Speech: Rate (pressured vs. slow), volume, rhythm, and latency (poverty of speech vs. hyperverbal).
- Mood & Affect: Mood is the client's internal subjective emotional state ('depressed', 'euphoric', 'anxious'). Affect is the objective observation of emotional expression (flat, blunted, labile, inappropriate).
- Thought Process: Organization of ideas: flight of ideas (rapid topic shifting), loose associations (illogical shifting), circumstantiality (excessive detail before reaching point), tangentiality (wandering off-topic), and word salad (incoherent jumble).
- Thought Content: Delusions (fixed false beliefs: persecutory, grandiose, somatic), obsessions, phobias, suicidal and homicidal ideation.
- Perceptions: Hallucinations (sensory perceptions without external stimuli: auditory, visual) vs. Illusions (misperceptions of real stimuli).
- Cognition & Judgment: Orientation, memory, concentration, insight (illness awareness), and judgment (adaptive decision-making).
Suicide Risk Assessment & Milieu Safety
- Direct Inquiry: Always ask explicit questions: 'Are you having thoughts of killing yourself?' Direct questioning does not increase suicide risk or implant ideation; it opens vital communication.
- Lethality Assessment: Evaluate specificity of plan, availability of lethal methods (firearms, hanging, toxic drugs), and preparatory actions (giving away possessions, drafting a will).
- Warning Signs: Sudden uncharacteristic improvement in mood or calm in a severely depressed client often indicates finalization of a suicide plan.
- Nursing Interventions: For high-risk clients, institute 1-on-1 continuous observation within arm's reach. Perform an environmental safety sweep: remove sharp items, shoelaces, belts, cords, and glass. Establish a collaborative safety plan.
Mood & Psychotic Disorders: Clinical Management
Acute Bipolar Mania & Lithium Therapy
- Milieu & Communication: Provide a low-stimulation environment (private room, dim lighting, reduced noise). Use a calm, firm tone with short, simple, concrete instructions. Avoid power struggles.
- Nutrition & Safety: Provide high-calorie, high-protein portable finger foods (sandwiches, cheese cubes, fruit, nutrient shakes) that can be eaten while pacing, preventing severe exhaustion and dehydration.
- Lithium Therapy: Narrow therapeutic window: 0.6 to 1.2 mEq/L (acute mania: 1.0 to 1.5 mEq/L; maintenance: 0.6 to 1.0 mEq/L). Serum levels are drawn 12 hours post-dose.
- Lithium Toxicity: Levels >1.5 mEq/L produce early signs: nausea, vomiting, diarrhea, coarse hand tremors, muscle weakness, and ataxia. Severe toxicity (>2.0 mEq/L) produces blurred vision, clonic twitching, seizures, coma, and renal failure.
- Patient Teaching: Maintain normal, consistent dietary sodium intake and fluid hydration (2,000 to 3,000 mL/day). Sodium depletion causes renal tubules to reabsorb lithium instead of sodium, triggering acute toxicity. Strictly avoid NSAIDs.
Schizophrenia: Hallucinations & Delusions
- Symptom Classification: Positive Symptoms (hallucinations, delusions, bizarre behavior, disorganized speech); Negative Symptoms (affective flattening, alogia, avolition, anhedonia, social withdrawal).
- Therapeutic Communication for Auditory Hallucinations: Validate client's emotional distress ('I understand that hearing those voices is frightening for you...'); present reality clearly without arguing ('...but I do not hear any voices'); assess command content ('What are the voices instructing you to do?') to evaluate safety; avoid validating hallucinations as real; and reorient to reality-based activities.
Anxiety and Panic Disorders
Panic disorder presents with acute episodes of intense terror, palpitations, diaphoresis, chest pain, dyspnea, and fear of dying. Acute nursing management: Stay with client; maintain calm presence; use short, simple sentences; move to quiet area; guide slow, deep breathing; avoid exploratory questioning until panic subsides.
Psychopharmacology: Antipsychotics & Antidepressants
Antipsychotic Classes & Extrapyramidal Symptoms (EPS)
- First-Generation Antipsychotics (Typicals, e.g., Haloperidol): Block dopamine D2 receptors; high EPS risk.
- Second-Generation Antipsychotics (Atypicals, e.g., Risperidone, Olanzapine, Clozapine): Block dopamine and serotonin receptors; lower EPS risk, but high metabolic syndrome risk. Clozapine requires regular absolute neutrophil count (ANC) tracking for agranulocytosis; withhold if ANC <1,000/μL.
| EPS Type | Clinical Presentation | Onset Timeline | Nursing Management |
|---|---|---|---|
| Acute Dystonia | Painful neck spasms (torticollis), tongue protrusion, oculogyric crisis. | Hours to 5 days | Emergency IM/IV Benztropine (1–2 mg) or Diphenhydramine (25–50 mg). |
| Akathisia | Intense motor restlessness; pacing, foot tapping. | Days to 2 months | Beta-blockers (Propranolol) or benzodiazepines. |
| Pseudoparkinsonism | Masked facies, resting tremor, cogwheel rigidity, shuffling gait. | Weeks to months | Oral anticholinergics (Benztropine). |
| Tardive Dyskinesia | Involuntary choreoathetoid movements of face, tongue, and limbs. | Months to years | Regular AIMS exams; discontinue/switch drug immediately. Anticholinergics worsen TD! |
Neuroleptic Malignant Syndrome (NMS)
Life-threatening reaction to dopamine antagonists. Characterized by severe hyperthermia (>39°C–41°C / 102°F–106°F), 'lead-pipe' muscle rigidity, autonomic instability (tachycardia, diaphoresis, labile BP), and altered consciousness. Lab shows elevated serum creatine kinase (CK) from rhabdomyolysis. Interventions: Discontinue antipsychotic immediately, transfer to ICU, initiate active external cooling, provide IV hydration, and administer Dantrolene (skeletal relaxant) or Bromocriptine (dopamine agonist).
Antidepressant Pharmacotherapy
- SSRIs (Fluoxetine, Sertraline): First-line therapy. Risk of Serotonin Syndrome when combined with other serotonergic agents (MAOIs, St. John's Wort). Symptoms: tremor, hyperreflexia, clonus, hyperthermia, agitation.
- MAOIs (Phenelzine, Tranylcypromine): Inhibit monoamine breakdown. Clients must adhere to a strict low-tyramine diet (avoid aged cheeses, cured meats, red wine, draft beer, fava beans, soy products). Ingesting tyramine triggers massive norepinephrine release, causing fatal Hypertensive Crisis.
Crisis Intervention, De-escalation & Restraints
Follow a strict hierarchy of least-restrictive interventions: verbal de-escalation (stand at 45-degree angle, arm's length away, keep exit clear, calm tone); environmental modification (quiet room, time-out); voluntary oral PRN medications.
- Seclusion & Mechanical Restraints: Strictly an intervention of last resort for imminent, serious danger to self/others when all less restrictive measures fail. Never used for discipline or convenience.
- Standards: Follow the facility's policy under national mental health law. Policies typically require:
- a prompt written medical order and face-to-face review;
- time-limited orders, renewed only after reassessment;
- continuous observation; and
- documented checks of vital signs, circulation, skin, hydration and toileting at frequent intervals (often every 15 minutes). US federal rules, for example, limit each order to 4 hours for adults, 2 hours for ages 9–17 and 1 hour under 9. Release the client as soon as self-control returns, and debrief afterwards.
A client admitted with acute bipolar mania is pacing the hospital corridor rapidly, shouting grandiose statements, intruding into other clients' bedrooms, and refusing to sit down for meals. Which nursing intervention is most effective in meeting this client's immediate physiological and safety needs?
Convene an impromptu group therapy session with other clients to confront the behavior
Insist that the client sit quietly in the dining room until an entire tray of solid food is consumed
Place the client in mechanical restraints immediately to control psychomotor hyperactivity
Provide high-calorie, high-protein finger foods and guide the client to a low-stimulus area
A client diagnosed with bipolar disorder has been taking lithium carbonate for 3 weeks. At a follow-up clinic visit, the client reports nausea, vomiting, frequent watery diarrhea, and a worsening coarse hand tremor. The nurse notes unsteady gait during ambulation. What is the nurse's priority action?
Reassure the client that these are expected, benign side effects that will subside with time
Administer an antiemetic and encourage the client to double the evening fluid intake
Hold the next lithium dose and obtain an immediate stat serum lithium level
Advise the client to restrict dietary sodium intake and increase vigorous aerobic exercise
A psychiatric inpatient receiving haloperidol for acute psychosis suddenly develops a high fever of 40.2°C (104.4°F), generalized 'lead-pipe' muscle rigidity, profuse diaphoresis, tachycardia (128 beats/minute), and fluctuating blood pressure. What is the nurse's immediate priority?
Administer an oral dose of benztropine to reverse acute dystonic extrapyramidal symptoms
Apply warm blankets to promote comfort and encourage bed rest
Administer a PRN dose of haloperidol to treat psychotic agitation
Stop the haloperidol immediately, notify the physician, and initiate aggressive cooling measures
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