A nurse is reviewing the medical record of a client who has delirium. Which of the following findings should the nurse identify as a potential cause of delirium?

A. Parkinson’s disease is a chronic neurologic disorder and is more commonly associated with dementia rather than acute delirium. B. HIV can contribute to cognitive disorders over time but is not among the most common acute causes of delirium. C. Vascular disease may contribute to chronic cognitive impairment but is not a common acute precipitating factor. D. Urinary tract infection is a common and reversible cause of delirium, particularly in older adults. Infections frequently trigger acute confusion and altered mental status.