9.1 Dementia & Alzheimer's Care
Key Takeaways
- Dementia is a group of symptoms (loss of memory, judgment, language, reasoning, behavior control), not normal aging — Alzheimer's disease is the most common cause.
- The 3 D's: delirium has sudden/acute onset and is reversible; dementia has gradual onset and is chronic/irreversible; depression is a mood change lasting 2+ weeks and is treatable.
- Use validation plus redirection for moderate-to-severe dementia; reality orientation suits only early dementia, delirium, or brief confusion.
- Sudden new confusion in a usually alert resident signals possible delirium (often from a UTI, dehydration, low oxygen, or medication) and must be reported to the nurse immediately.
- Difficult behavior is communication of an unmet need — find the cause, protect safety, and never argue, scold, or restrain for convenience.
Why Dementia Care Is Heavily Tested
The Florida CNA written test (about 60 multiple-choice questions, delivered by Prometric under the Florida Board of Nursing) draws a large share of items from Specialized Resident Care, and dementia is the single heaviest sub-topic. Florida has one of the oldest populations in the United States, so a working CNA will care for residents with cognitive impairment on nearly every shift. The exam therefore tests practical, safe responses rather than medical theory.
Dementia is a group of symptoms — progressive loss of memory, judgment, language, reasoning, orientation, and behavior control — severe enough to disrupt daily life. It is not a normal part of aging. Normal aging may slow recall slightly; dementia steadily erases the ability to function. Alzheimer's disease is the most common cause (60–70% of cases) and progresses gradually over years. Vascular dementia (from strokes) tends to progress in sudden step-downs. Lewy body dementia adds visual hallucinations and movement problems.
The CNA never diagnoses the type — the CNA recognizes behaviors, keeps the resident safe, and reports changes.
General Stages and What the CNA Observes
| Stage | What You Observe | CNA Focus |
|---|---|---|
| Early (mild) | Recent-memory lapses, repeating questions, misplacing items, word-finding trouble, still mostly independent | Cue and remind; protect dignity; reinforce routine |
| Middle (moderate) | Disorientation, wandering, sundowning, needing ADL help, behavioral outbursts, day/night reversal | Simplify tasks; supervise closely; redirect; ensure safety |
| Late (severe) | Minimal or no speech, total ADL dependence, swallowing and mobility loss, incontinence | Comfort, skin and mouth care, aspiration precautions, gentle announced touch |
Progression is one-directional and cannot be reversed, but a sudden jump in confusion is a red flag for something new and treatable — not just "the dementia getting worse."
The 3 D's: Delirium vs Dementia vs Depression
The 3 D's look alike at the bedside but demand very different responses, and the exam loves to test whether you can tell them apart. The CNA's job is to notice the pattern and report — especially to flag a possible delirium, which is a medical emergency that can be reversed if caught early.
| Feature | Delirium | Dementia | Depression |
|---|---|---|---|
| Onset | Sudden (hours to days) | Gradual (months to years) | Weeks (2+ weeks of low mood) |
| Course | Fluctuates; worse at night | Slow, steady decline | Steady low mood |
| Reversible? | Usually YES, if cause treated | No | Yes, treatable |
| Attention | Markedly impaired, drifts | Usually intact until late | Mildly reduced |
| Alertness | Changes (drowsy↔agitated) | Normal | Normal |
| Common cause | Infection (UTI), dehydration, low O2, meds, pain | Alzheimer's, strokes | Loss, illness, isolation |
Delirium is the can't-miss item. A resident who is normally alert and oriented and suddenly becomes confused, drowsy, agitated, or "not themselves" may have an acute, treatable cause — a urinary tract infection (extremely common in older adults), dehydration, low blood oxygen, pain, constipation, or a new medication. Report this change of condition to the nurse immediately. Depression can mimic dementia (slowed thinking, poor concentration, withdrawal) and is treatable, so it is also reportable. **
Common Behaviors and Safe Responses
Difficult behavior is communication of an unmet need — pain, hunger, fear, a full bladder, noise, fatigue, or infection. The reward answer almost always looks for the cause and protects safety rather than scolding or arguing.
- Wandering / elopement: provide supervised safe walking paths, ensure identification is on the resident, and alert the nurse immediately if a resident is missing. Do not lock a resident in a room — that is an unlawful restraint under Florida resident-rights rules.
- Sundowning: increased confusion and agitation in the late afternoon/evening. Turn on lights before dusk, reduce noise, and keep the evening routine calm and predictable.
- Catastrophic reaction (sudden, extreme overwhelm — crying, yelling, striking out): usually caused by fatigue or over-stimulation. Lower the stimulation, stay calm, do not crowd or restrain the resident, give space and time, then report.
- Repetitive questions: answer simply and consistently; do not say "I already told you."
- Hoarding / rummaging: provide a safe "rummage" drawer; do not shame the resident.
Environmental Safety Checklist
- Good, even lighting; reduce shadows and glare that trigger misperception.
- Remove clutter and trip hazards; non-slip flooring.
- Lock medications, chemicals, sharps, and hot-water access.
- Supervise eating; cut food per the care plan to prevent choking.
- Keep frequently used items visible and the room layout consistent.
- Provide a familiar caregiver and an unrushed, predictable routine.
Validation vs. Reality Orientation
This distinction is a frequent Prometric item, and choosing the wrong approach can increase distress.
| Approach | What It Is | Best Used When |
|---|---|---|
| Reality orientation | Gently restating the true day, place, time, and names | Early dementia, delirium, or brief confusion where the resident can be reoriented without distress |
| Validation | Acknowledging the feeling behind the statement rather than correcting the facts | Moderate-to-severe dementia, fixed delusions, or any time correcting the facts upsets the resident |
Example: a resident says, "I have to get home to feed my babies." Reality orientation ("Your children are grown adults, this is your home now") often escalates fear in moderate dementia. Validation plus redirection works better: "It sounds like you really love your family. Let's have some lunch and you can tell me about them." You acknowledge the emotion, do not invent an elaborate lie, and gently redirect to a safe activity. Validation therapy was developed by Naomi Feil and focuses on the emotional truth behind the words.
Never argue with a delusion or hallucination, and never fabricate detailed false stories. Acknowledge the feeling, reassure safety, redirect, and report new or worsening symptoms. A usually alert resident who becomes suddenly confused, drowsy, or agitated has an acute change of condition — report to the nurse immediately and do not dismiss it as "just the dementia."
A resident with moderate Alzheimer's becomes tearful, saying she must go pick up her young children from school. What is the best CNA response?
A resident with dementia who is normally calm and oriented to staff suddenly becomes very confused and agitated during an afternoon shift. What should the CNA do first?
Which feature best distinguishes delirium from dementia?