A nurse is collecting data for a middle aged client who has pyelonephritis. Which of the following findings should the nurse expect?

Choice A rationale Weight gain is typically associated with conditions involving fluid retention, such as heart failure or chronic kidney disease with significant edema. Pyelonephritis is an acute bacterial infection of the renal pelvis and kidney tissue, which more often leads to dehydration and weight loss due to systemic symptoms like fever, nausea, and vomiting. Fluid volume overload is not a characteristic finding of an uncomplicated acute infection of the upper urinary tract during the initial assessment. Choice B rationale Flank pain, often occurring at the costovertebral angle, is a classic hallmark of pyelonephritis. This occurs because the infection causes inflammation and swelling of the kidney, which stretches the renal capsule. The pain is usually dull, aching, and can be severe. When combined with systemic signs like fever and chills, it strongly points toward an upper urinary tract infection. Physical examination will often reveal significant tenderness when the area over the kidneys is lightly percussed. Choice C rationale While confusion can occur in elderly clients as a nonspecific sign of any systemic infection, including urinary tract infections, it is not a primary or expected finding for a middle aged client. In younger or middle aged adults, the immune response is typically more robust and localized symptoms are more prominent. Confusion is a secondary complication related to sepsis or severe systemic inflammatory response syndrome rather than a direct, expected symptom of localized renal pelvis inflammation. Choice D rationale Hypotension is a sign of severe systemic involvement, such as septic shock, which can be a complication of untreated or severe pyelonephritis. However, it is not an expected finding for a standard case of pyelonephritis. In the early stages of infection, the body is more likely to maintain a normal or slightly elevated blood pressure due to the stress response and fever. Frequent monitoring is required to ensure the infection does not progress to life threatening sepsis.