NCLEX-RN® Adult Development and Aging: Geriatric Syndromes, Falls, Polypharmacy, and Dementia
Gerontological nursing for the NCLEX-RN®: normal vs. abnormal aging changes, geriatric syndromes (delirium, falls, incontinence), polypharmacy risk, and dementia vs. delirium differentiation.
The big picture
Caring for older adults is a major component of nursing practice, and NCLEX-RN® tests it throughout multiple content areas. The core challenge is distinguishing normal aging from pathological change — and knowing that illness in older adults often presents atypically. Conditions that cause dramatic symptoms in younger patients may appear only as confusion, falls, or quiet withdrawal in an elderly patient.
Normal vs. abnormal aging
Normal physiological changes by system
| System | Normal change | Clinical implication |
|---|---|---|
| Cardiovascular | Decreased cardiac output; arterial stiffening | Higher baseline BP; slower heart rate response |
| Respiratory | Decreased lung elasticity; lower FEV₁ | Reduced reserve; fatigue faster with exertion |
| Renal | Decreased GFR (approximately 1% per year after 30) | Drug accumulation; slower electrolyte regulation |
| Hepatic | Reduced first-pass metabolism | Drugs metabolized more slowly; toxicity at lower doses |
| GI | Decreased gastric motility; reduced acid | Constipation; delayed drug absorption |
| Musculoskeletal | Decreased muscle mass (sarcopenia); bone density loss | Fall risk; fracture risk |
| Sensory | Presbyopia (near vision), presbycusis (high-frequency hearing) | Difficulty with small print, high-pitched voices |
| Skin | Thinning dermis; reduced elastin; fewer sweat glands | Poor thermoregulation; skin tears; pressure injuries |
| Immune | Immunosenescence | Reduced fever response; unusual infection presentations |
| Neurological | Slower processing speed; some short-term memory loss | NOT dementia — slower recall is normal |
NCLEX® key: Slower information processing and occasional word-finding difficulty are normal aging. Confusion, disorientation, personality change, or inability to perform familiar tasks are NOT normal — these require investigation.
Atypical presentations in older adults
Older adults frequently present with atypical or nonspecific symptoms that differ dramatically from classic textbook presentations:
| Condition | Typical adult presentation | Atypical presentation in older adults |
|---|---|---|
| MI | Chest pain, diaphoresis | Fatigue, dyspnea, nausea, no chest pain |
| UTI | Dysuria, frequency, urgency | Sudden confusion, delirium, falls |
| Pneumonia | Fever, productive cough | Low-grade temp, confusion, anorexia, weakness |
| Depression | Sad mood, crying | Withdrawal, weight loss, somatic complaints, "not acting like themselves" |
| Sepsis | Fever, tachycardia, warm skin | Hypothermia, bradycardia, confusion |
| Hyperthyroidism | Heat intolerance, tachycardia, tremor | Apathetic thyrotoxicosis: lethargy, depression, weight loss |
NCLEX® rule: Any new-onset confusion in an older adult should be investigated as a medical problem — UTI, medication toxicity, electrolyte imbalance, stroke — before being attributed to "dementia" or "age."
Delirium vs. dementia vs. depression — the 3 Ds
Differentiating these conditions is one of the most heavily tested geriatric nursing concepts.
| Feature | Delirium | Dementia | Depression |
|---|---|---|---|
| Onset | Acute (hours to days) | Gradual (months to years) | Variable; usually gradual |
| Cause | Medical cause (infection, medication, metabolic) | Neurodegenerative disease | Psychiatric; situational or biological |
| Consciousness | Fluctuating — waxes and wanes | Intact until late stages | Intact |
| Attention | Severely impaired | Impaired in later stages | Usually intact |
| Reversibility | Yes — if cause treated | No | Yes, with treatment |
| Time of day | Sundowning — worse in evening | More stable; sundowning can occur | Often worse in morning |
| Hallucinations | Common | In later stages (Lewy body) | Rare (unless psychotic depression) |
Delirium — priority nursing concern
Delirium is a medical emergency — it indicates an underlying cause that must be identified and treated.
NCLEX® nursing priorities:
- Identify and treat the underlying cause (most common: UTI, medication toxicity, dehydration, pain, electrolyte imbalance)
- Reorient frequently: "You're in the hospital. My name is [name], your nurse."
- Familiar objects and faces help reduce distress
- Quiet environment with good lighting; consistent caregivers
- Prevent harm — bed in lowest position, call light within reach, one-to-one supervision if needed
- Avoid physical restraints — increase agitation and delirium duration
- Avoid Foley catheters — remove as soon as possible (Foley is a risk factor for delirium)
- Involve family as much as possible — familiar voices and faces are orienting
Falls and fall prevention
Falls are the leading cause of injury-related death in adults over 65 and the most common adverse event in healthcare settings.
Risk factors specific to older adults
- Polypharmacy (especially sedatives, antihypertensives, diuretics, antidepressants, antipsychotics)
- Visual impairment
- Lower extremity weakness
- Gait and balance disorders
- Orthostatic hypotension
- Urinary urgency (rushing to the bathroom)
- Environmental hazards (loose rugs, poor lighting, no grab bars)
- Fear of falling (leads to inactivity → deconditioning → more falls)
Orthostatic hypotension — common and dangerous
Definition: Drop in SBP ≥ 20 mmHg or DBP ≥ 10 mmHg within 3 minutes of standing.
Causes: Dehydration, diuretics, antihypertensives, prolonged bed rest, diabetes (autonomic neuropathy), Parkinson's disease.
Assessment: Check BP lying, sitting, and standing — record all three.
Teaching: Rise slowly; sit at the edge of the bed for 1–2 minutes before standing; call for help if dizzy.
Polypharmacy
Polypharmacy is the use of five or more medications simultaneously — extremely common in older adults who have multiple chronic conditions. It increases the risk of:
- Adverse drug reactions
- Drug-drug interactions
- Drug-disease interactions
- Falls and cognitive impairment
- Non-adherence (complex regimens)
The Beers Criteria
Current clinical guidelines identify medications that are potentially inappropriate for older adults due to high risk and limited benefit. The 2023 update added aspirin avoidance for primary prevention in adults ≥ 60, updated warfarin cautions (DOACs generally preferred), and refined guidance on multiple drug classes.
| Drug category | Why avoided in older adults |
|---|---|
| Benzodiazepines | Fall risk, cognitive impairment, paradoxical agitation |
| Anticholinergic drugs (diphenhydramine/Benadryl, oxybutynin, some TCAs) | Confusion, urinary retention, constipation, fall risk |
| NSAIDs (long-term) | GI bleeding, renal impairment, cardiovascular risk |
| Meperidine (Demerol) | Toxic metabolite (normeperidine) causes CNS excitation, seizures |
| Sliding-scale insulin alone | Unstable glucose control as the sole long-term regimen; hypoglycemia risk |
| Aspirin for primary prevention | Avoid in adults ≥ 60 (2023 update) — bleeding risk outweighs cardiovascular benefit in those without established CVD |
| Warfarin as first-line anticoagulant | 2023 update advises caution as first-line; DOACs generally preferred in eligible older adults |
| First-generation antipsychotics | Fall risk, EPS, stroke risk in dementia |
| Skeletal muscle relaxants (cyclobenzaprine, carisoprodol) | CNS depression, anticholinergic effects, fall risk |
NCLEX® key: Diphenhydramine (Benadryl) is on the Beers list — a common OTC "sleep aid" that causes confusion and fall risk in older adults. Never recommend it for sleep in elderly patients.
Medication reconciliation
Medication reconciliation at every transition of care (admission, transfer, discharge) is a Joint Commission patient safety goal and is especially critical in older adults.
Dementia
Dementia is a syndrome of progressive cognitive decline that interferes with daily functioning. It is NOT a normal part of aging.
Types
| Type | Features |
|---|---|
| Alzheimer's disease (most common, 60–80%) | Gradual memory loss beginning with recent memory; personality changes; eventually affects all functions |
| Vascular dementia | Stepwise decline; associated with stroke and cardiovascular disease |
| Lewy body dementia | Fluctuating cognition; visual hallucinations; Parkinsonism; extreme sensitivity to antipsychotics |
| Frontotemporal dementia | Early personality and behavior changes; language problems; affects younger patients |
NCLEX® nursing priorities for dementia care
- Maintain safety — fall prevention, safe swallowing (dysphagia common in late stages), supervised medications
- Establish consistent routine — reduced decision-making; familiar environment
- Therapeutic communication:
- Do not argue or correct — "validation therapy": enter the patient's reality
- Short, simple sentences; one instruction at a time
- Identify yourself each interaction: "Hi, I'm Sarah, your nurse."
- Manage behavioral symptoms (BPSD):
- Agitation, wandering, sundowning, sleep disturbances
- Non-pharmacological first: music, exercise, structured activities, familiar objects, pet therapy
- Avoid antipsychotics when possible (FDA black box warning for dementia patients: increased mortality — applies to BOTH first-generation AND second-generation antipsychotics)
- Support the caregiver — caregiver burnout is common; assess and refer for resources
NCLEX® clinical judgment focus
The most common NCLEX® geriatric traps:
- Assuming confusion in an older adult is "just dementia" — always assess for delirium first
- Recommending Benadryl for sleep — Beers Criteria contraindicated in elderly
- Not checking orthostatic BPs before discharge — falls risk
- Forgetting that infections in elderly may present without fever
- Using physical restraints for a confused patient — increases delirium and mortality
FAQ
What is the difference between delirium and dementia in terms of urgency?
Delirium is an acute emergency — it requires immediate identification and treatment of the underlying cause (infection, medication, electrolyte imbalance). Dementia is a chronic, progressive condition. Delirium can occur on top of existing dementia (mixed delirium + dementia), making both harder to diagnose. Any sudden change from the patient's baseline cognitive status should trigger a workup for delirium.
What causes sundowning?
Sundowning — increased confusion, agitation, or behavioral disturbances in the late afternoon or evening — is not fully understood. Contributing factors include fatigue, disrupted circadian rhythm, reduced sensory input in low light, and overstimulation during the day. Environmental strategies: maintain routine, ensure daytime light exposure, reduce evening stimulation, nightlights in rooms.
Why is meperidine (Demerol) avoided in older adults?
Meperidine is metabolized to normeperidine, which accumulates (especially in renal impairment) and causes CNS excitation — confusion, tremors, myoclonus, and seizures. It is on the Beers Criteria and should never be used in older adults. Morphine, hydromorphone, or oxycodone are safer opioid alternatives.
How do you screen for dementia at the bedside?
The Montreal Cognitive Assessment (MoCA) and Mini-Mental State Examination (MMSE) are validated tools. However, for a quick bedside screen, nurses use the 3-word recall test and orientation questions. The clock-drawing test is another simple, validated screen. Report any significant decline from baseline to the provider.
What is validation therapy and when is it used?
Validation therapy is a communication approach for dementia care that involves entering the patient's subjective reality rather than correcting it. If a patient with advanced dementia believes they need to go pick up their children from school, arguing that their children are adults is distressing and futile. Validation redirects: "Your children sound very important to you. Tell me about them." It reduces agitation and preserves dignity.
Key takeaways
- Normal aging: Slower processing, minor memory changes, sensory changes are normal. Confusion, personality change, and functional decline are NOT.
- 3 Ds: Delirium (acute, reversible, fluctuating) ≠ Dementia (gradual, progressive) ≠ Depression (variable onset, treatable). Any new confusion → workup for delirium.
- Falls: Orthostatic hypotension check lying/sitting/standing. Rise slowly teaching. Polypharmacy review.
- Beers Criteria: Benzodiazepines, anticholinergics (Benadryl), NSAIDs, meperidine — potentially inappropriate in elderly.
- Dementia care: Safety, routine, therapeutic communication, non-pharmacological behavioral management first.
Sources: NCSBN NCLEX-RN® 2023 Test Plan; National Institute on Aging (NIA) Ageing Resources; AHRQ Falls Prevention in Hospitalised Patients; FDA Older Adults and Medication Safety.
See also:
- NCLEX-RN® Health Promotion and Disease Prevention
- NCLEX-RN® Pharmacology Guide (Polypharmacy)
- NCLEX-RN® Patient Safety Guide
- NCLEX-RN® Nutrition Guide
- Mobility and Immobility: Complications of Bedrest
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