7.3 Delirium Prevention & Dementia Care
Key Takeaways
- Delirium is acute, fluctuating, and often reversible; dementia is chronic and progressive; depression can mimic either—timing, attention, and course differentiate them
- HELP-style multicomponent nonpharmacologic protocols are first-line for delirium prevention in at-risk hospitalized older adults
- Dementia care prioritizes person-centered nonpharmacologic strategies for behavioral symptoms before antipsychotics, which carry significant risks
- Always search for precipitants of delirium (infection, meds, pain, sensory loss, constipation, urinary retention, metabolic derangement) while protecting sleep, mobility, and orientation
Cognitive syndromes are high-frequency GERO-BC content because mismanagement drives falls, restraint use, prolonged hospitalization, and mortality. Domain II-A-1 focuses on interventions and outcomes: prevent delirium when possible, treat precipitants aggressively, and support people living with dementia using evidence-based nonpharmacologic care.
Delirium vs Dementia vs Depression (Differential Essentials)
| Feature | Delirium | Dementia | Depression |
|---|---|---|---|
| Onset | Hours to days | Months to years | Weeks to months |
| Course | Fluctuating, often worse at night | Progressive, relatively stable day-to-day early on | Diurnal mood variation common |
| Attention | Impaired (hallmark) | Relatively preserved until late | May appear as poor concentration |
| Consciousness | Altered; hyperactive, hypoactive, or mixed | Clear until advanced disease | Clear |
| Reversibility | Often yes if precipitant treated | Not reversible (though symptoms manageable) | Often treatable |
| Insight/mood | Variable; fear/agitation or quiet withdrawal | May deny deficits (anosognosia) | Low mood, anhedonia, guilt/worthlessness |
Key exam pearl: New inattention + acute change = think delirium first, even if the person already has dementia (delirium superimposed on dementia).
Hypoactive delirium is under-recognized: the “pleasant, sleepy” patient who no longer eats or engages may be critically ill—not “just tired.”
Delirium Prevention: HELP-Style Multicomponent Care
The Hospital Elder Life Program (HELP) model and similar bundles reduce delirium incidence through targeted nonpharmacologic protocols. You do not need to memorize brand labels for every protocol, but you must know the intervention domains:
| Domain | Example interventions | Expected prevention outcome |
|---|---|---|
| Orientation | Clock/calendar, reorientation, familiar objects, family presence | Maintains reality orientation; CAM remains negative |
| Cognition/stimulation | Conversation, activities matched to ability | Reduced idle confusion |
| Sleep enhancement | Quiet at night, cluster care, avoid unnecessary nocturnal vitals/meds when safe | Consolidated sleep; less nighttime agitation |
| Early mobility | Ambulation, PT, avoid prolonged bedrest | Less deconditioning and delirium |
| Vision | Glasses on, adequate lighting, enlarge print | Fewer misperceptions |
| Hearing | Hearing aids in/working, face patient, reduce noise | Improved communication |
| Hydration/nutrition | Offer fluids (as allowed), assist feeding | Prevent dehydration-related delirium |
| Medication review | Minimize deliriogenic drugs (e.g., strong anticholinergics, benzodiazepines when avoidable) | Fewer iatrogenic precipitants |
High-risk patients who need prevention protocols
- Age ≥70–75 with baseline cognitive impairment
- Severe illness, infection, hypoxia, or major surgery (especially orthopedic/cardiac)
- Sensory impairment
- Dehydration, electrolyte imbalance
- Polypharmacy / new psychoactive meds
- Immobility, restraints, indwelling catheters (remove ASAP when not indicated)
- Sleep deprivation and ICU environments
When delirium is present: intervene while investigating
- Ensure safety — fall precautions, supervision, avoid restraints as first-line.
- Identify and treat precipitants — UTI/pneumonia, MI, pain, urinary retention, constipation, withdrawal, hypoglycemia, hypoxia, new meds.
- Continue nonpharmacologic bundle at full intensity.
- Use antipsychotics sparingly — only for severe distress/danger when nonpharm fails and benefits outweigh risks; not for convenience or wandering alone.
- Communicate diagnosis of delirium to family (it is not “instant dementia”).
- Track outcomes — CAM status, sleep, oral intake, mobility, and resolution of precipitant.
Dementia Care: Nonpharmacologic First
People living with dementia need interventions that support remaining abilities and reduce behavioral distress. Evidence favors person-centered, nonpharmacologic approaches as first-line for behavioral and psychological symptoms of dementia (BPSD).
Core nonpharmacologic strategies
| Strategy | Practical examples | Outcome to evaluate |
|---|---|---|
| Know the person | Life history, preferences, music, routines | Engagement; less resistance to care |
| Communication | Short sentences, one-step cues, calm tone, allow time | Successful task completion |
| Environment | Reduce clutter/noise, good lighting, clear signage, safe wandering paths | Fewer catastrophic reactions |
| Structured routine | Consistent caregivers/timing for bathing/meals | Less sundowning escalation |
| Activity & purpose | Meaningful tasks at ability level | Reduced idle agitation |
| Pain & basic needs check | Toilet, hunger, thirst, fatigue, unnoticed pain | Behavior settles after need met |
| Caregiver education | Validate, redirect, don’t argue facts of reality when harmful | Lower caregiver distress; safer responses |
What not to do as first-line
- Argue the person into orientation (“Your spouse died years ago—accept it”) when it increases distress
- Use physical restraints for wandering
- Start antipsychotics for mild restlessness without evaluating pain, delirium, or environment
- Overwhelm with multi-step commands during care
Pharmacologic caution in dementia
Antipsychotics may be considered for severe aggression with risk of harm after unmet-needs assessment—but they carry boxed warnings for increased mortality in dementia-related psychosis. Cholinesterase inhibitors/memantine (when prescribed) are disease-oriented therapies managed by the clinician; nursing outcomes focus on function, appetite, GI tolerance, and fall risk—not promising a cure.
Putting Differentials into Intervention Choice
| If the pattern is… | Prioritize… |
|---|---|
| Acute fluctuating inattention | Delirium workup + HELP-style prevention/treatment bundle |
| Gradual memory/executive decline with clear sensorium | Dementia supports, safety, caregiver teaching, advance planning |
| Low mood, anhedonia, “I don’t know” answers, possible pseudo-dementia | Depression screening/treatment pathway (see 7.4) while still ruling out delirium |
| Dementia + sudden worsening | Assume delirium superimposed until proven otherwise |
Expected Outcomes for Cognitive Care Plans
- CAM negative for defined interval / delirium resolved with precipitant treated
- Sleep uninterrupted for target nighttime hours
- Ambulation resumed; restraints avoided
- Behavioral episodes reduced in frequency/intensity after nonpharm plan
- Caregiver demonstrates redirect/validation techniques
- Sensory aids worn during waking hours
Exam Focus
GERO-BC items often contrast acute vs chronic timelines, ask for the best delirium-prevention action (mobility, sleep, glasses/hearing aids, reorientation, hydration), or prefer nonpharmacologic dementia care over immediate antipsychotic use. Choose the answer that finds reversible causes and preserves dignity and function.
An 79-year-old with known mild dementia becomes newly inattentive and more confused over 24 hours after hip surgery. What is the nurse’s best initial interpretation and intervention focus?
Which nursing action best reflects a HELP-style delirium prevention approach for a high-risk hospitalized older adult?
A resident with Alzheimer disease becomes agitated during bathing. Which response is the most evidence-aligned first approach?
Which comparison correctly differentiates depression from dementia on exam-style items?