1 Department of Anesthesia and Perioperative Care, Division of Critical Care Medicine, University of California - San Francisco, San Francisco, California.
2 Department of Medicine, Division of Nephrology, University of California - San Francisco, San Francisco, California.
3 Department of Anesthesiology and Critical Care Medicine, Saint-Louis Hospital, Paris Public Assistance Hospital, Paris, France.
Perioperative oliguria is an alarm signal. The initial assessment includes closer patient monitoring, evaluation of volemic status, risk-benefit of fluid challenge or furosemide stress test, and investigation of possible perioperative complications.