Evidence-Based
RESOURCES & REFERENCES
Evidence-based tools, clinical literature, and awareness materials for families, caregivers, and medical professionals.
CLINICAL SCREENING TOOLS
Validated instruments for bedside delirium assessment. All tools are freely available for clinical and educational use.
Confusion Assessment Method (CAM)
The gold-standard bedside tool for delirium diagnosis. Validated in over 30 studies. Requires Features 1 + 2 + (3 or 4) for a positive result.
CAM-ICU
Adaptation of the CAM for use in intubated and non-verbal ICU patients. Uses non-verbal assessments and the RASS sedation scale.
4AT Rapid Assessment Test
A brief, practical tool for delirium detection requiring no special training. Takes under 2 minutes. Validated across multiple clinical settings.
Delirium Rating Scale-Revised (DRS-R-98)
A 16-item scale for delirium severity rating and differential diagnosis. Useful for tracking symptom progression over time.
KEY CLINICAL LITERATURE
Landmark studies and systematic reviews that define the current evidence base for delirium recognition and management.
Delirium in Older Persons
Inouye SK — New England Journal of Medicine
Comprehensive review of delirium epidemiology, pathophysiology, risk factors, and management. The foundational clinical reference.
A Multicomponent Intervention to Prevent Delirium in Hospitalized Older Patients
Inouye SK et al. — New England Journal of Medicine
The landmark HELP trial demonstrating that targeted non-pharmacological interventions reduce delirium incidence by 33% in hospitalized elders.
Delirium as a Predictor of Mortality in Mechanically Ventilated Patients
Ely EW et al. — JAMA
ICU study demonstrating that delirium is an independent predictor of 6-month mortality, longer ICU stays, and higher costs.
Urinary Tract Infection and Delirium in Older Adults
Balogun SA, Philbrick JT — Southern Medical Journal
Review of the relationship between UTI and delirium in older adults, including diagnostic challenges and treatment considerations.
Postoperative Delirium in Older Adults: Best Practice Statement
American Geriatrics Society Expert Panel — Journal of the American College of Surgeons
Evidence-based recommendations for prevention, identification, and management of postoperative delirium in older surgical patients.
Hypoactive Delirium: Assessing the Extent of the Problem
Meagher DJ et al. — International Journal of Geriatric Psychiatry
Systematic analysis of hypoactive delirium prevalence and the clinical consequences of its under-recognition in hospital settings.
ORGANIZATIONS & PROGRAMS
Leading institutions advancing delirium research, education, and clinical practice.
Hospital Elder Life Program (HELP)
The evidence-based program developed at Yale that reduces delirium incidence by up to 40%. Provides free clinical tools, training materials, and implementation guides.
Visit SiteICU Delirium & Cognitive Impairment Study Group
Vanderbilt University research group led by Dr. E. Wesley Ely. Provides CAM-ICU training, research updates, and free clinical resources for critical care teams.
Visit SiteAmerican Delirium Society (ADS)
Professional society dedicated to improving delirium care through education, research, and advocacy. Annual conference and clinical practice resources.
Visit SiteAmerican Geriatrics Society (AGS)
Publishes the Beers Criteria for potentially inappropriate medication use in older adults — essential for delirium prevention through medication management.
Visit SiteFOR FAMILIES & CAREGIVERS
Plain-language guides and tools to help families recognize delirium, communicate with medical teams, and support recovery.
01
What to Say to the Medical Team
If your loved one is acting differently than normal, say these words exactly: 'This is not their baseline. This is an acute change. I am concerned about delirium.' These phrases trigger clinical protocols.
02
Keeping a Baseline Record
Before any hospitalization, document your loved one's normal cognitive function: how they communicate, their memory, their daily routine. This baseline is your most powerful diagnostic tool.
03
Questions to Ask the Doctor
Has my loved one been screened for delirium? What is the underlying cause? What medications are they on, and could any be contributing? What is the plan for non-pharmacological management?
04
After Discharge: What to Watch For
Delirium can persist for weeks to months after the triggering event resolves. Ongoing confusion, sleep disruption, or personality changes after discharge warrant follow-up — do not assume it will resolve on its own.
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Every person who recognizes delirium is a potential life saved. Share this site with families, caregivers, and medical professionals in your network.