Given the high incidence of delirium in older adults with alcohol use disorder, what is the best approach to reduce the risk in hospitalized patients?

Rationale: A. Restricting fluids in older adults is generally contraindicated, especially for those with alcohol use disorder, because dehydration is a well-established risk factor for delirium. Adequate hydration helps maintain cerebral perfusion, electrolyte balance, and metabolic function, all of which are critical for cognitive stability. Limiting fluids could exacerbate confusion, increase the risk of falls, and worsen delirium. Therefore, this option is not appropriate for delirium prevention. B. Establishing consistent daily schedules can support orientation and help regulate circadian rhythms, which may indirectly reduce the risk of delirium. However, while structured routines are beneficial for overall mental stability, they do not actively monitor or detect early cognitive changes. Therefore, relying solely on routines is insufficient for patients at high risk of delirium, particularly in the acute hospital setting. C. Early mobilization and physical therapy are important for preventing deconditioning, muscle atrophy, and functional decline in hospitalized patients. Mobility can also improve circulation and reduce complications such as venous thromboembolism. However, while physical therapy has general health benefits, it does not directly detect or prevent the cognitive disturbances associated with delirium. It should be considered a supportive intervention rather than the primary preventive strategy. D. This is the most effective and evidence-based approach for reducing the risk of delirium in hospitalized older adults with alcohol use disorder. By routinely evaluating cognitive function using tools such as the Confusion Assessment Method (CAM) or Mini-Mental State Exam (MMSE), healthcare providers can identify early signs of delirium, including subtle changes in attention, orientation, memory, or thought processes. Early detection enables prompt interventions, such as medication review, hydration optimization, pain management, sleep promotion, and environmental modifications (e.g., ensuring proper lighting and minimizing noise). Regular cognitive assessments also facilitate communication with family members and the care team about the patient’s changing mental status, improving patient safety and overall outcomes.