The nurse is assessing a client with a diagnosis of prerenal acute kidney injury (AKI). Which condition would the nurse expect to find in the patient's recent history?

Rationale: A. Bladder cancer typically leads to postrenal acute kidney injury (AKI) by causing urinary tract obstruction at or near the bladder outlet. This prevents urine from leaving the body, causing pressure to back up into the kidneys, but does not affect renal perfusion directly. B. Kidney stones can block urine flow within the ureters, resulting in postrenal AKI due to mechanical obstruction and increased intratubular pressure, not decreased renal blood flow. C. Pyelonephritis, a bacterial infection of the renal parenchyma, causes intrarenal AKI by directly damaging kidney tissues and nephrons through inflammation and infection. D. Dehydration is a classic cause of prerenal acute kidney injury, which results from reduced renal perfusion without structural damage to the kidneys. When circulating blood volume or cardiac output drops—such as from dehydration, hemorrhage, burns, or heart failure—the kidneys receive inadequate blood flow. This decreases the glomerular filtration rate (GFR), leading to elevated blood urea nitrogen (BUN) and creatinine levels. Prompt correction of the underlying cause can often reverse prerenal AKI before permanent damage occurs.