Residency · Residency · Internal Medicine

Falls and Functional Decline in the Hospitalized Elderly

Introduction

Falls are the leading cause of injury-related morbidity and mortality in adults over 65. Hospital-associated functional decline affects up to one-third of hospitalized older adults, often triggering a cascade of deconditioning, falls, prolonged length of stay, and institutionalization. Prevention requires systematic risk assessment and a multifactorial intervention approach.

Epidemiology

• In-hospital falls occur at a rate of 3-5 per 1,000 patient-days
• Approximately 30% of in-hospital falls result in injury; 4-6% cause serious injury including fractures
• Functional decline occurs in 30-60% of hospitalized elders, with new disability in basic ADLs persisting at discharge in up to 35%
• Hip fractures from falls carry a one-year mortality of 20-30%
• Falls are among the most common hospital-reported adverse events

Risk Factors for In-Hospital Falls

Intrinsic Factors

• Age > 65 years with increasing risk with advancing age
• Gait and balance impairment: the single strongest predictor
• Cognitive impairment and delirium: confusion increases fall risk 2-3 fold
• Muscle weakness and deconditioning: compounded by bed rest
• Visual impairment and peripheral neuropathy
• Orthostatic hypotension: present in up to 30% of hospitalized elders

Extrinsic Factors

• Medications: sedatives, opioids, antihypertensives, diuretics, anticholinergics (fall-risk-increasing drugs or FRIDs)
• Environmental hazards: wet floors, poor lighting, bed height, cluttered rooms
• Restraints: paradoxically increase fall risk and injury severity
• Tethering devices: urinary catheters, IV lines, telemetry leads

Fall Risk Assessment Tools

• Morse Fall Scale: widely used; scores based on history of falling, secondary diagnosis, ambulatory aid, IV therapy, gait, and mental status
• Hendrich II Fall Risk Model: incorporates confusion, depression, altered elimination, dizziness, and specific medications
• Timed Up and Go (TUG): > 12 seconds indicates increased fall risk
• No tool is perfectly predictive; clinical judgment must supplement standardized tools
• Reassess risk with any change in clinical status, medications, or mobility

Multifactorial Fall Prevention

Evidence-Based Interventions

• Medication review: reduce or eliminate FRIDs; particular attention to sedative-hypnotics and polypharmacy
• Mobility promotion: early ambulation, physical therapy consultation, avoid unnecessary bed rest orders
• Environmental modification: non-slip footwear, bed in lowest position, call light within reach, adequate lighting
• Toileting assistance: scheduled toileting reduces urgency-related falls
• Delirium prevention: orient frequently, maintain sleep-wake cycle, manage pain, avoid deliriogenic medications
• Orthostatic hypotension management: adequate hydration, medication adjustment, gradual position changes

What Does NOT Work

• Physical restraints: increase agitation, injury severity, and mortality; should be avoided
• Bed alarms alone: evidence does not support reduction in falls; may be useful as part of a bundle
• Sitters without structured protocols have limited evidence of effectiveness

Hospital-Associated Functional Decline

Pathophysiology of Deconditioning

• Bed rest leads to 1-3% loss of muscle strength per day and 10-15% per week
• Decreased cardiac output, orthostatic intolerance, and reduced aerobic capacity develop within days
• Pressure injuries, venous thromboembolism, and atelectasis are additional complications
• Loss of functional independence often becomes permanent in frail elders

Prevention Strategies

• Mobility-first culture: prioritize ambulation orders over bed rest
• ACE (Acute Care for Elders) units: specialized geriatric units with interdisciplinary teams
• HELP (Hospital Elder Life Program): volunteer-based program targeting delirium and functional decline
• Early physical and occupational therapy consultation
• Minimize unnecessary tethering: remove catheters, IVs, and telemetry as soon as clinically appropriate
• Adequate nutrition and protein intake to support muscle preservation

Post-Fall Assessment

• Perform immediate assessment for injury including head trauma, fractures, and soft tissue injury
• Evaluate for syncope or presyncope as a cause of the fall
• Obtain orthostatic vitals and ECG when appropriate
• Review medications initiated or changed in the preceding 24-48 hours
• Document a thorough post-fall huddle to identify contributing factors and prevent recurrence
• Consider neuroimaging if head strike occurred, especially in patients on anticoagulation

Key Clinical Pearls

• Gait and balance impairment is the strongest predictor of falls; assess mobility on admission and with status changes.
• Medication review targeting fall-risk-increasing drugs (FRIDs) is the single most effective intervention.
• Physical restraints increase harm and should be avoided; focus on environmental modification and mobility promotion.
• Hospital-associated deconditioning begins within hours of bed rest; early mobilization is critical.
• A multifactorial bundle approach reduces falls more effectively than any single intervention.

References

1. Dykes PC, Carroll DL, Hurley A, et al. Fall Prevention in Acute Care Hospitals: A Randomized Trial. JAMA. 2010;304(17):1912-1918.
2. Inouye SK, Bogardus ST Jr, Baker DI, et al. The Hospital Elder Life Program: A Model of Care to Prevent Cognitive and Functional Decline in Older Hospitalized Patients. Journal of the American Geriatrics Society. 2000;48(12):1697-1706.
3. Oliver D, Healey F, Haines TP. Preventing Falls and Fall-Related Injuries in Hospitals. Clinics in Geriatric Medicine. 2010;26(4):645-692.
4. Covinsky KE, Pierluissi E, Johnston CB. Hospitalization-Associated Disability. JAMA. 2011;306(16):1782-1793.

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