What is the recommended management of delirium in an elderly patient (≥ 65 years)?

Management of Delirium in Elderly

Implement multicomponent nonpharmacologic interventions delivered by an interdisciplinary team as the primary management strategy for delirium in elderly patients, reserving antipsychotics only for severe agitation threatening substantial harm, and avoid benzodiazepines entirely except for alcohol/benzodiazepine withdrawal. 1

Prevention: The Most Effective Strategy

Prevention is paramount—approximately one-third of delirium cases can be prevented through systematic risk-factor modification 2. This is both clinically effective and cost-saving compared to usual care.

High-Risk Groups Requiring Prevention (>5-fold increased risk):

• Age ≥65 years
• Cognitive impairment or dementia
• Severe illness
• Hip fracture 2

Core Multicomponent Prevention Protocol

Implement ALL of the following components consistently for ALL at-risk patients 2:

1. Cognitive Orientation

• Frequent reorientation to person, place, and time
• Therapeutic activities to maintain cognitive engagement
• Minimize room transfers (each move disrupts orientation)

2. Mobility Optimization

• Early mobilization post-surgery
• Daily walking with appropriate aids accessible at all times
• Active range-of-motion exercises for non-ambulatory patients

3. Sleep Hygiene (Critical)

• Avoid nursing/medical procedures during sleep hours
• Schedule medication rounds to avoid sleep disruption
• Reduce noise to minimum during sleep periods
• No 24-hour lighting 2

4. Sensory Function

• Ensure glasses and hearing aids are available, used, and functioning
• Remove impacted ear wax
• Ensure dentures fit properly 2

5. Hydration and Nutrition

• Maintain adequate hydration
• Address nutritional deficits
• Check denture fit (common overlooked cause of undernutrition)

6. Pain Management

• Assess for both verbal AND nonverbal pain signs (especially in dementia patients)
• Optimize pain control preferably with nonopioid medications 1
• Regional anesthesia may be considered perioperatively 1

7. Medication Review

• Review ALL medications for delirium risk
• Avoid high-risk medications: anticholinergics, benzodiazepines, first-generation antihistamines
• Apply "one in, one out" principle to prevent polypharmacy 2

8. Infection Control and Hypoxia Prevention

• Minimize unnecessary catheterization
• Prevent and promptly treat infections
• Maintain adequate oxygenation

Treatment of Established Delirium

Step 1: Medical Evaluation (Mandatory)

Perform comprehensive medical evaluation to identify and treat underlying causes 1. This is the cornerstone of treatment—delirium is a medical emergency requiring identification of precipitants:

• Hypoxia/hypoglycemia (check immediately)
• Infection (especially urinary, respiratory)
• Metabolic derangements (electrolytes, renal function, glucose)
• Medication toxicity or withdrawal
• Pain (undertreated)
• Urinary retention/constipation
• Acute cardiac or neurologic events

Step 2: Nonpharmacologic Management (First-Line)

Continue all prevention strategies listed above. Multicomponent interventions may improve clinical outcomes even after delirium develops 1.

Step 3: Pharmacologic Management (Highly Restricted)

For Hypoactive Delirium:

DO NOT prescribe antipsychotics or benzodiazepines 1. These medications:

• Do not modify delirium duration or severity
• Carry substantial risks (increased morbidity/mortality)
• Are not indicated without significant agitation

For Hyperactive Delirium with Severe Agitation:

Only when patient threatens substantial harm to self or others AND nonpharmacologic measures fail:

• Use atypical antipsychotics at lowest effective dose for shortest duration 1
• Options: haloperidol, risperidone, olanzapine, quetiapine, or ziprasidone
• Benzodiazepines are contraindicated as first-line (increase delirium duration and risk) 1
• Exception: alcohol or benzodiazepine withdrawal (where benzodiazepines ARE indicated)

What NOT to Use:

• Cholinesterase inhibitors: Do not newly prescribe for prevention or treatment 1
• Prophylactic antipsychotics: Insufficient evidence, potential harm 1
• Benzodiazepines: Contraindicated except for substance withdrawal 1

Critical Pitfalls to Avoid

1. Treating hypoactive delirium with antipsychotics: This is harmful and not indicated 1
2. Using benzodiazepines for agitation: These worsen and prolong delirium 1
3. Treating akathisia with antipsychotics: This paradoxically worsens behavioral activation
4. Missing pain in nonverbal patients: Always assess nonverbal pain cues in dementia patients 2
5. Failing to implement prevention protocols: Prevention is more effective than treatment and must be applied consistently to ALL at-risk patients, not just "some patients some of the time" 2

Screening and Recognition

Screen all patients ≥65 years using validated tools (4AT, CAM, 3D-CAM) 3, 4. Delirium is unrecognized in approximately 80% of cases 5, yet early recognition is essential for outcomes.

Follow-Up

Arrange primary care follow-up for ongoing cognitive screening post-discharge, as delirium may persist for months in vulnerable patients and signals increased mortality risk 4, 6.