3.2 Cognitive Changes & Mental Health
Key Takeaways
- Delirium is sudden, fluctuating, and usually reversible (often from infection, dehydration, medication, or pain) and is a medical emergency to report immediately; dementia is gradual and irreversible; depression is a treatable mood disorder, not memory loss
- Alzheimer's disease is the most common dementia (60-80% of cases); short-term memory fails first while long-term and emotional memory persist longer, progressing through early, middle, and late stages
- Validation therapy acknowledges the resident's feelings and reality ("You miss your mother") rather than correcting them; reality orientation can increase agitation in moderate-to-severe dementia
- Sundowning is increased confusion and agitation in the late afternoon/evening (20-45% of Alzheimer's residents); reduce it with daytime activity, evening light, calm routine, and limited caffeine and naps
- Behavior is communication — always check for a physical cause first (pain, hunger, full bladder, infection); any statement of self-harm or suicide is reported to the nurse immediately and never kept confidential
Why This Matters
Emotional and mental-health care is about 8-13% of the New Jersey CNA exam and is the heart of psychosocial care. The single most-tested skill is distinguishing the three Ds — delirium, dementia, and depression. They look alike (all involve confusion or low mood in older adults), they often co-exist, but they require very different responses, and the exam will test whether you know which one is the emergency.
Delirium vs. Dementia vs. Depression
| Feature | Delirium | Dementia | Depression |
|---|---|---|---|
| Onset | Sudden (hours-days) | Gradual (months-years) | Weeks (≥2 weeks low mood) |
| Course | Fluctuates through the day | Slow steady decline | Often worse in the morning |
| Reversible? | Usually yes | No | Yes, treatable |
| Attention | Severely impaired | Normal early | Mildly reduced |
| Alertness | Rises and falls | Usually normal | Normal |
| Common cause | Infection (UTI), dehydration, medication, pain, low oxygen | Brain disease (Alzheimer's) | Loss, illness, isolation |
| CNA action | Report immediately — emergency | Report; follow dementia care plan | Report; encourage activity, listen |
A new, sudden confusion in a resident who was clear yesterday is delirium until proven otherwise — most often a urinary tract infection (UTI) in older adults, who may show confusion instead of the classic burning or fever. Report it right away. Delirium develops over hours to days and the symptoms wax and wane through the day; dementia creeps in over months to years; depression is a persistent low mood lasting two weeks or more. Because the three frequently overlap in the same resident, the CNA's job is never to sort them out, only to report the change accurately and quickly.
Alzheimer's Disease Stages
Alzheimer's disease is the most common dementia, causing 60-80% of cases. It is progressive and irreversible. Short-term memory fails first; long-term and emotional memory last far longer, which is why a resident may forget breakfast but vividly recall their childhood or wedding day.
- Early (mild) — forgetfulness, repeating questions, word-finding trouble, misplacing items, still mostly independent
- Middle (moderate) — needs help with activities of daily living, may wander, sundowning, confusion about time and place, behavior and personality changes; this is usually the longest stage
- Late (severe) — very limited speech, total care, loss of swallowing and mobility, incontinence, high risk for pressure injuries and aspiration
Validation, Redirection, and the Four Rs
Validation therapy acknowledges the resident's feelings and their reality instead of correcting them. If a resident asks for a parent who died years ago, do not say "Your mother is dead" — that re-traumatizes them with each telling. Instead: "You miss your mother. Tell me about her." You focus on the feeling behind the words, not the factual error.
Redirection gently shifts attention to a calming activity ("Let's fold these towels together"). Reality orientation (using calendars and clocks) helps in mild confusion but often increases agitation in moderate-to-severe dementia, so it is not used once a resident is firmly in another reality. A useful memory aid for dementia care is the four Rs: Reassure, Reconsider, Redirect, and Relax the situation.
| Behavior or situation | CNA approach |
|---|---|
| Resident insists on a false belief | Validate the feeling; do not argue or correct |
| Resident is fixated or agitated | Redirect to a simple, familiar task |
| Resident is overwhelmed | Reduce noise/people; one caregiver, one simple instruction |
| Resident is suspicious or accusing | Stay calm, don't take it personally, reassure |
Approach from the front at eye level, use the resident's name, speak slowly with short sentences, give one direction at a time, and allow plenty of time to respond.
Agitation, Sundowning, and Wandering
Behavior is communication. Always check for a physical cause first: pain, hunger, thirst, a full bladder, constipation, infection, fatigue, being too hot or cold, or overstimulation. An unmet need, not "being difficult," drives most challenging behavior.
- Sundowning — worsening confusion and agitation in the late afternoon and evening, affecting roughly 20-45% of people with Alzheimer's, most often in the middle and later stages. Reduce it with daytime activity and bright light, a calm and predictable evening routine, limited caffeine, and short or no late-day naps that disrupt the sleep-wake cycle.
- Wandering — keep the environment safe and free of hazards, ensure the resident wears identification, use the facility's monitoring/alarm system and secured exits, provide safe walking paths and activity, and meet the underlying need (boredom, looking for a bathroom, restlessness, pain).
- Catastrophic reaction — a sudden overreaction to a small trigger. Stay calm, remove the trigger, do not argue, give space, and reassure with a soft voice and gentle approach.
Anxiety, Depression, and Suicide Risk
Signs of depression in older adults include withdrawal, loss of appetite, sleep changes, slowed movement or speech, fatigue, and statements of hopelessness or worthlessness. Encourage participation in activities, listen without rushing, and report — do not say "cheer up," which minimizes real suffering.
If a resident expresses any wish to harm themselves or others, gives away belongings, or says life is not worth living, report it to the nurse immediately. This is never kept confidential, and the CNA does not assess how serious it is — judging risk and intervening is the nurse's and clinician's role. The CNA's duty is to observe, stay with the resident if directed, and report at once.
A resident with no prior confusion suddenly becomes disoriented overnight at a New Jersey nursing facility, picking at the air and unable to focus, with symptoms that come and go. What is the MOST appropriate CNA action?
A resident with Alzheimer's disease at a Newark facility repeatedly asks to "go home to see Mama," though her mother died decades ago. Using validation therapy, the CNA should say:
A resident with dementia becomes increasingly restless, agitated, and confused every day around 5 p.m. Which set of CNA interventions best addresses this sundowning?