Thirst is prominent in critically ill patients and is related to dehydration. In a recent study of the symptoms experience in ITU patients at high risk of dying, the sensation of thirst was reported in 70.8% of assessments made and was considered to be one of the most intense stressors. Thirst and dehydration can be combated in an ITU setting by consuming oral fluids and through administration of intravenous fluids. However, in older adults, frailty and dysphagia reduces patients' capability to access fluid and results in thirst. In addition, the administration of IV fluids is determined by the attending physician and is often only re-evaluated on a daily or twice-daily basis.