In the elderly, what is a common sign of urinary tract infection (UTI)?

Choice A rationale Hematuria, or blood in the urine, can occur in elderly patients with urinary tract infections due to bladder wall irritation. However, it is not the most common or distinguishing sign in this population. Hematuria is often associated with other conditions such as bladder cancer, kidney stones, or the use of anticoagulant medications. While it may be present, it does not serve as the hallmark atypical presentation that frequently complicates the diagnosis of infection in older, geriatric individuals. Choice B rationale Dysuria, or painful urination, is a classic symptom of a urinary tract infection in younger adults. In the elderly, however, this symptom is frequently absent due to age-related changes in sensory perception or the presence of cognitive impairments that prevent the reporting of pain. Relying on dysuria for diagnosis in the elderly can lead to missed infections, as their immune and sensory responses are often blunted or altered compared to the younger adult population. Choice C rationale Pyuria is the presence of white blood cells or pus in the urine and is a common laboratory finding in a urinary tract infection across all age groups. While it is a reliable indicator of inflammation or infection in the urinary tract, it is not a clinical "sign" that is easily observed without diagnostic testing. In the elderly, clinical symptoms are often needed to trigger the decision to perform a urinalysis, and pyuria itself does not explain the systemic changes. Choice D rationale Confusion and altered mental status are the most common atypical presentations of urinary tract infections in the elderly. This is often referred to as delirium. Because of age-related declines in the blood-brain barrier and the systemic inflammatory response, an infection in the bladder can manifest as acute cognitive impairment rather than localized pain or fever. Nurses must recognize that sudden behavioral changes or increased disorientation in an older adult often indicate an underlying physiological infection.