What is prerenal oliguria?

Prerenal oliguria is a condition characterized by a decreased urine output due to inadequate blood flow to the kidneys, often resulting from factors such as dehydration, heart failure, or systemic shock. It reflects a reversible form of acute kidney injury where the kidneys themselves are functioning normally but are not receiving sufficient blood supply to produce urine effectively. Prompt identification and treatment of the underlying cause can restore normal kidney function and urine output.