You are caring for a 92-year-old female patient who was admitted to the hospital 1 day after outpatient cataract surgery. The patient who lives in an assisted living facility became very confused and agitated and was found wandering in the lobby of the building in her nightgown. The patient refused to return to their room and stated that there were "bad men" in the room. The patient has a history of dementia, diabetes, heart failure, and is on seven different medications. The patients lost their spouse 1 year ago. The nurse suspects that the patient is experiencing delirium. What are the patient's risk factors for delirium? (Select all that apply.)