RT Book, Section A1 Salisu, Mariam A1 Berger, Jeffrey S. A2 Freeman, Brian S. A2 Berger, Jeffrey S. SR Print(0) ID 1135740964 T1 Perioperative Oliguria and Anuria T2 Anesthesiology Core Review: Part Two Advanced Exam YR 2016 FD 2016 PB McGraw-Hill Education PP New York, NY SN 9781259641770 LK accessanesthesiology.mhmedical.com/content.aspx?aid=1135740964 RD 2024/04/19 AB Oliguria and anuria are defined as urine output less than 0.5 mL/kg/h and less than 50 mL/d, respectively. Frequently observed in the postoperative period, oliguria and anuria may be the initial presenting sign of acute kidney injury (AKI), a condition associated with significant perioperative morbidity. Acute renal failure (ARF) in the perioperative setting is a serious surgical complication as over 50% of acute hemodialysis patients have perioperative ARF. The mortality rate for perioperative ARF remains in the range of 20%–80% depending upon patient comorbidities. More than 90% of perioperative ARFs result from relative hypovolemia with inadequate renal perfusion. The Kidney Disease Improving Global Outcomes (KDIGO) criteria for AKI are defined in Table 90-1.