the furosemide stress test

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Sharad Patel
Sharad Patel
Professional Intensivist/Nephrologist/Dad, and very amateur surfer and coder.
Sam Epstein • Illustrator
Sam Epstein • Illustrator

Aspiring Medical Student and current Critical Care RN. Enjoys everything outdoors but can also be found inside nerding out on her medical education artwork

  • The Furosemide Stress Test identifies oliguric patients presumed to have ATN that will require Renal Replacement Therapy (RRT)
  • Dosing
    • Furosemide naïve: 1mg/kg
    • Furosemide tolerant: 1.5 mg/kg
  • UOP < 200cc over 2 hours is highly predictive of AKIN stage III AKI, mortality and need for RRT
  • UOP > 200 cc over 2 hours demonstrates relatively intact glomerular and tubular function.
  • Caveats:
    • Ensure euvolemia
    • The response may point towards a pre-renal state but further evaluation with ultrasound can be helpful to determine if this is congestive versus a hypovolemic state. The management is very different!


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