Final answer:
A realistic short-term goal for a patient with delirium is to improve sleep patterns.
Step-by-step explanation:
A realistic short-term goal for a patient with delirium that can be accomplished in 2-3 days is to improve sleep patterns. Delirium can significantly disrupt sleep patterns, leading to increased confusion and agitation in patients. By addressing sleep disturbances, healthcare providers can help stabilize the patient's cognitive functioning and overall well-being.