ABSTRACT
The fractional excretion of urea (FEU) is a useful index for differentiating the main categories of causes of acute kidney injury, ie, prerenal causes and intrinsic causes. It may be used in preference to the more widely used fractional excretion of sodium (FENa) in situations in which the validity of the latter is limited, such as in patients taking a diuretic.
- Copyright © 2012 The Cleveland Clinic Foundation. All Rights Reserved.
- Jonathan Gotfried, MD,
- Jonathan Wiesen, MD⇑,
- Rupesh Raina, MD, PhD, FACP, FAAP and
- Joseph V. Nally Jr, MD
- Department of Internal Medicine, Temple University, Philadelphia, PA
- Department of Internal Medicine, Cleveland Clinic
- Rainbow Babies and Children’s Hospital, University Hospitals of Cleveland
- Glickman Urology and Kidney Institute, Cleveland Clinic
- Department of Medicine- Pediatrics, MetroHealth Strongsville Medical Group
- Assistant Professor of Medicine, Case Western Reserve University, Cleveland, OH
- Director, Center for Chronic Kidney Disease, Department of Nephrology and Hypertension, Glickman Urological and Kidney Institute, Cleveland Clinic
- ADDRESS:
Jonathan Wiesen, MD, Department of Internal Medicine, NA10, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195; e-mail jwiesen1{at}gmail.com.
ABSTRACT
The fractional excretion of urea (FEU) is a useful index for differentiating the main categories of causes of acute kidney injury, ie, prerenal causes and intrinsic causes. It may be used in preference to the more widely used fractional excretion of sodium (FENa) in situations in which the validity of the latter is limited, such as in patients taking a diuretic.
- Copyright © 2012 The Cleveland Clinic Foundation. All Rights Reserved.