An 82-year-old woman with no history of neurologic dysfunction is admitted to the hospital with a possible bowel obstruction. She has been vomiting for several days. In addition to managing her medical care, nurses are monitoring the client for signs of delirium. Which of the following assessment findings would suggest that delirium may be developing in the client?
a. The client removes her IV line and tries to climb over the side rails to get out of bed.
b. The client has trouble finding the right word when speaking.
c. The client requests pain medication frequently.
d. The client is not sleeping well at night.