A 72-year-old widow has just returned home after 2 weeks in the hospital after a fall. She lives alone and is visited weekly by her son. She takes digoxin, hydrochlorothiazide, and an antihypertensive drug. She also has a prescription for diazepam (Valium) as needed for moderate to severe anxiety. When the visiting nurse stopped by 2 days after discharge, he found the woman confused and disoriented, with an unsteady gait. The patient asks him who he is and why he is there. The nurse correctly deduces that the most likely cause for the changes seen in the patient is:
Correct Answer: A
Rationale: The correct answer is A: Delirium. The patient's sudden onset of confusion, disorientation, and unsteady gait after discharge from the hospital suggests delirium. Delirium is an acute change in mental status with fluctuating symptoms, often caused by underlying medical conditions, medications (such as diazepam), or environmental factors. In this case, the recent hospitalization, multiple medications, and potential stressors like living alone and recent fall increase the risk for delirium.
Incorrect choices:
B: Dementia is a chronic, progressive condition characterized by memory loss and cognitive decline. The sudden onset of symptoms in this case is not consistent with dementia.
C: Drug toxicity could be a possibility given the patient's medication list, but delirium is a more likely explanation due to the acute onset of symptoms post-hospitalization.
D: None of the above is incorrect because delirium is the most likely cause based on the patient's presentation and risk factors.