Urine sodium levels in hypovolemic and euvolemic patients

“Spot urine sodium and FeNa+
1. Since hypovolemia promotes avid sodium reabsorption, hypovolemia is usually associated with a low urinary sodium concentration (< 20–30 mEq/L) and low FeNa+(< 0.5%). On the other hand, euvolemic patients do not have a stimulus to reabsorb urine sodium and usually have a higher urinary sodium (> 20–30 mEq/L) and FeNa+.”
Stern SDC, Cifu AS, Altkorn D. Symptom to Diagnosis: An Evidence-Based Guide. 3rd edition. New York, NY: McGraw-Hill Medical; 2015. Available here.

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About Lisa

I have been a Clinical Informationist (aka Medical Librarian) for Emory University since September 2013. Prior to that, I was a Medical Librarian for Lincoln Memorial University (LMU) from March 2007 to August 2013 and served its DeBusk College of Osteopathic Medicine, Caylor School of Nursing, and allied health programs. From January 2002 - March 2007, I served the Medical Assisting (MA), Occupational Therapy Assistant, Physical Therapy Assistant, Radiologic Technologist, and Nursing programs at South College in Knoxville, Tennessee. I graduated from The University of Tennessee School of Information Sciences with a Master of Science degree in December 2000.
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