A patient with prerenal acute kidney injury would most likely present with a rapid decrease in renal function, which is reflected by an increase in blood urea and creatinine and is often associated with oliguria (a urine volume of less than 400 ml/24 hours) .
Prerenal acute kidney injury is caused by a decrease in blood flow to the kidneys, which can be due to factors such as hypovolemia, hypotension, or decreased cardiac output. Therefore, a patient with prerenal acute kidney injury may present with symptoms related to the underlying cause, such as dehydration, hypotension, or heart failure. Additionally, they may have symptoms related to the buildup of waste products in the blood, such as nausea, vomiting, and confusion.