A nurse is caring for an older adult client with a history of recurrent urinary tract infections (UTIs) in a long-term care facility. The client is nonverbal and unable to communicate discomfort or changes in urinary habits. During a routine assessment, the nurse notes increased confusion, fever, and foul-smelling urine in the client. What should be the nurse's immediate action?

The correct immediate action for the nurse is to notify the healthcare provider immediately to order a urine culture and initiate antibiotic treatment (Choice C). This is because the client is showing signs of a possible UTI, such as increased confusion, fever, and foul-smelling urine. Prompt treatment with antibiotics is crucial to prevent the infection from worsening and causing serious complications. Performing a bladder scan (Choice A) may be helpful but is not the most urgent action in this scenario. Starting the client on an increased fluid intake regimen (Choice B) may be beneficial in general but would not address the immediate need for antibiotic treatment. Administering acetaminophen (Choice D) to reduce the fever would only provide symptomatic relief and not address the underlying infection.