Nil per os on Admission and Dehydration Are Risk Factors for Delirium in Hospitalized Older Adults With Dementia and Dysphagia

Patients with Alzheimer's disease and related dementias (ADRD) experience oral intake restriction. The objective of this study was to determine whether nil per os (NPO) and dysphagia diets (thickened liquids) are associated with delirium in patients with ADRD and whether dehydration mediates these relationships.