Schizophrenia Comprehensive Exam Notes

Pathophysiology & Core Definition

Chronic psychiatric disorder characterized by an “abnormal, scattered pattern of thinking” that persists ≥ $6$ months.
Functional deterioration: relationships, school performance, occupational roles suffer because clients cannot sustain concentration.
Triple “S” mnemonic
- Schizophrenia
- Scattered thinking
- Suicide risk (elevated)

Causes & Risk Factors

Genetics
- First-degree relative with schizophrenia → markedly higher incidence in offspring.
Neurochemistry
- Imbalance (largely ↓ dopamine activity in specific brain pathways) implicated.

Global Symptom Taxonomy (Know for Exams)

Three overarching clusters:
1. Positive (Psychotic) Symptoms – additions to normal experience.
2. Negative Symptoms – deficits/losses of normal function.
3. Cognitive Symptoms – impairments in memory, understanding, executive function.

Positive Symptoms ("P = Psychotic")

Hallucinations (perceptual experiences without external stimulus)
- Auditory (most common): voices, sounds. Nursing tip: provide competing audio stimulation – headphones, music, TV. NOT simply “ignore it” or “read a book.”
- Tactile: sensations of being touched, insects crawling, etc.
- Visual, gustatory, olfactory exist but less emphasized in exam cues.
Delusions (fixed, false beliefs despite evidence)
- Reference: “This song has a secret message for me.”
- Control: “The FBI controls me through the internet.”
- Grandeur: “I have a private meeting with the queen.”
- Persecutory/Paranoid: “The hospital food is poisoned.”
Disorganized Speech/Thought (Thought Disturbances)
1. Loose associations / flight of ideas – rapid topic shift, no logical link ("The universe is like a raisin … I rode my bike").
2. Neologisms – invented words ("vomers are coming").
3. Clang associations – rhyme-driven speech (“bay, hay, say, today …”).
4. Word salad – random word mixture (“chair moon orange drank”).
5. Concrete thinking – literal interpretation of metaphors/proverbs.
6. Tangentiality – answers veer off to unrelated topics.
7. Echolalia – echoing another’s words (“Vitals … vitals … vitals”).
8. Perseveration – repeating own chosen word across different questions (“absolutely splendid”).

Negative Symptoms ("Five A’s")

Think of a “switch turned OFF.”
1. Affect (flat or blunted) – blank facial expression.
2. Anhedonia – inability to feel pleasure.
3. Apathy / Avolition – lack of interest, motivation.
4. Alogia (poverty of speech).
5. Anxiety → social withdrawal; prefers isolation. (High-yield NCLEX point.)

Cognitive Symptoms ("Double C = Capacity to remember")

Deficits in attention, working memory, learning new information, executive planning.

Phases of Illness (low-priority exam content)

Prodromal – social withdrawal, mild decline.
Active – full positive symptoms (delusions, hallucinations, etc.).
Residual – cognitive/negative predominance after acute phase.

Specific Clinical Sub-types & Emergencies

Catatonic Schizophrenia

Requires ≥ 2 features: immobility, bizarre rigid postures, mutism, negativism, staring.
PRIORITY: ensure fluid & nutritional intake (Maslow – physiological needs > psychosocial).
May require total body care to prevent dehydration/malnutrition.

Paranoid Schizophrenia

Dominant persecutory delusions; high suspicion (“food is poisoned,” “being followed”).
Plan of care:
- Verbally reinforce reality (“Those are sprinklers, not cameras.”).
- Acknowledge feelings (“I know that feels frightening.”).
- Never argue or explore delusion’s content; keep focus on present reality + emotions.

Therapeutic Communication & Nursing Interventions

Assessment: use open-ended questions to explore perceptual content ("What are the voices saying?", "Describe what you see.").
Reality orientation + empathy (dual rule):
- State facts (“I don’t hear voices.”) + validate emotion (“… but I understand they seem real to you.”).
Safe, structured milieu:
- Reduce environmental stimuli; maintain predictable routine.
- Short, frequent contacts to build trust (sit silently if patient leaves or is in stupor).
Monitor suicide risk (high in schizophrenia).
Do NOT:
- Label hallucinations (“your demons”);
- Argue about delusions;
- Follow or restrain client unless safety dictates.

Pharmacology Cheat-Sheet

1. Typical Antipsychotic – Haloperidol (Haldol)

Uses: schizophrenia, Tourette’s, acute agitation (often with benzodiazepine like lorazepam).
Common (non-urgent) EPS: dystonia (neck/facial spasms) – manage with anticholinergics; report only if airway risk.
Killer adverse effect: Neuroleptic Malignant Syndrome (NMS)
- Hallmarks: high fever, diaphoresis, severe muscle rigidity, altered mental status, autonomic instability (↑BP).
- Actions: HOLD drug, assess, notify HCP STAT; prepare IV fluids, cooling, dantrolene/bromocriptine per protocol.
- NCLEX distractor: NMS is NOT caused by hydrochlorothiazide.

2. Atypical Antipsychotics – Clozapine & Risperidone

Reserved for refractory schizophrenia or schizoaffective disorder.
Routine side effects: weight gain, hypersalivation, sedation (tolerance develops).
Major danger: Agranulocytosis (↓ WBC, neutropenia) → infection.
- S/S: sore throat, fever, flu-like malaise.
- Labs: hold & report if \text{WBC} < 5{,}000 /\text{mm}^3 or \text{ANC} < 1{,}500 /\text{mm}^3.
- “Clozapine zaps the WBCs.”
CONTRA: dementia (↑ mortality). Remember: Remove risperidone in dementia.

3. Ziprasidone (Geodon)

Indications: bipolar mania, acute psychosis with agitation.
High-yield adverse effects:
- QT prolongation → risk of torsades → cardiac arrest.
- Hypotension, potential seizures.
Monitoring: baseline & follow-up ECG; check BP.
Mnemonic: “ZiprasiDONE has done prolonged your QT & done dropped your BP.”

Priority Decision Cues (Exam Hot Spots)

Suicidality & self-harm thoughts trump other psychosocial concerns.
Catatonia: fluid/nutrition > communication.
NMS or agranulocytosis → immediate hold + notify (life threatening).

Memory Tricks & Mnemonics Recap

3 S’s: Schizophrenia | Scattered thinking | Suicide risk.
Positive = Psychotic (hallucinations, delusions, thought disorder).
Negative = 5 A’s (Affect, Anhedonia, Apathy/Avolition, Alogia, Anxiety/Avoidance).
Catatonia priorities: “Feed & Fluid the Frozen.”
Clozapine: “ClOZapine zaps the CloWBCs.”
Ziprasidone: “QT is zip-long.”

Ethical & Practical Considerations

Respect autonomy: allow client to leave interaction; do not coerce discussion.
Trust building via consistent presence; fosters adherence to treatment & mitigates stigma.
Confidentiality: open-ended assessments are vital yet must preserve privacy if others are present.
Safety vs. liberty balance in catatonia/paranoia: fluids may require gentle assistance but avoid restraints unless absolutely necessary.

Real-World Links & Foundational Connections

Dopamine hypothesis aligns with pharmacologic MOA: all effective antipsychotics antagonize dopamine (D2) to varying degrees.
Maslow’s hierarchy applied: physiologic (hydration, nutrition) prioritized over psychosocial in catatonia.
Therapeutic communication principles mirror Carl Rogers’ person-centered approach: empathy + congruence.

Quick Reference Numeric Values & Formulas

Diagnostic timeline: $\ge 6 \text{ months}$ symptom persistence.
Agranulocytosis alert: \text{WBC} < 5{,}000 / \text{mm}^3 OR \text{ANC} < 1{,}500 / \text{mm}^3.
Fever red-flag in NMS: typically > 38.5^{\circ}\text{C} ( ≈ $101.3^{\circ}\text{F}$ ).

Practice NCLEX-Style Take-Home Points

Best initial action when paranoid client leaves interview: let client leave, sit quietly; maintain short, frequent contacts.
Group-activity readiness: ability to play simple game with nurse + one peer = green light.
Best response to hallucinations: “I don’t hear the voices, but I know they are real to you.”
Catatonia with rigidity: anticipate compromised swallow; consult nutrition & consider enteral options.

“Focus on reality, validate the feeling, ensure basic needs – the cornerstone of safe schizophrenia care.”