Comprehensive Nutritional Intervention for Delirium Prevention and Management in Geriatric Care

Introduction:

Delirium represents a significant healthcare challenge affecting up to 60% of older adults in inpatient settings, associated with increased mortality, prolonged hospitalization, and accelerated cognitive decline. Despite established multifactorial etiology, nutritional contributors to delirium—including dehydration, malnutrition, and micronutrient deficiencies—remain insufficiently addressed in standard care protocols. Evidence suggests that nutritional optimization may represent a potent, yet underutilized non-pharmacological approach to delirium management.

Aim: This quality improvement initiative evaluated the impact of a proactive, multidimensional nutritional intervention program on delirium outcomes in vulnerable older adults across acute care, post-acute, and long-term care settings.

Methodology: A prospective cohort study was conducted with 86 patients aged ≥70 years (mean age 81.2 years) at high risk for delirium. The intervention comprised early nutritional screening, individualized hydration protocols, protein-energy supplementation, micronutrient optimization, texture-modified diets when indicated, and mealtime assistance. Implementation utilized a nurse-led interdisciplinary approach with dietitian oversight. Delirium was assessed daily using validated tools (CAM, 4AT). Primary outcomes included delirium incidence, duration, severity, and functional recovery at discharge.

Results: Following implementation, delirium incidence decreased significantly from baseline (18.6% vs 37.2%, p<0.001). Among patients experiencing delirium, mean duration decreased from 4.2 to 2.3 days (p=0.002) and severity scores improved by 41%. Nutritional parameters improved substantially, with 76% of participants meeting individualized hydration goals and 68% achieving protein targets. Length of stay decreased by 2.1 days (p=0.01), and functional independence measures at discharge improved by 24% compared to historical controls.

Conclusion: Strategic nutritional interventions significantly reduced delirium burden and improved clinical outcomes in older adults across care settings. Findings support integration of comprehensive nutritional approaches into standard delirium prevention protocols, representing a cost-effective, non-pharmacological strategy to improve quality of care for this vulnerable population.