Epistemis

Advanced Clinical Calculators in Nephrology — Professional Interactive Tool

Internal Medicine · Clinical Specialties

How it begins

Motores matemáticos interactivos para la evaluación de la filtración glomerular, la depuración de solutos, la compensación ácida, el déficit hídrico sistémico y la predicción epidemiológica de progresión a enfermedad renal terminal.

What it covers

  1. eGFR CKD-EPI equation (2021)
  2. Simplified Equation MDRD-4 Variables
  3. Cockcroft-Gault equation
  4. Schwartz Equation (Pediatric)
  5. Fraction of Excretion of Sodium ($FE_{Na}$) and Urea ($FE_{Urea}$)
  6. Potassium Excretion Fraction ($FE_K$) and Transtubular Potassium Gradient ($TTKG$)
  7. Fractional Excretion of Uric Acid ($FE_{UA}$)
  8. Total Body Water Calculation ($ACT$)
  9. Free Water Deficit in Hypernatremia
  10. Adrogué-Madias Formula (Sodium Change by Infusion)
  11. 3% Hypertonic Saline Infusion in Acute Symptomatic Hyponatremia
  12. Plasma Anion Gap (Anion Gap) Corrected by Albumin
  13. Delta-Delta Ratio (Delta Gap / Delta Ratio)
  14. Urinary Anion Gap (UAG)
  15. Plasma Osmolar Gap
  16. Calcium Corrected by Albumin
  17. Fractional Excretion of Calcium ($FE_{Ca}$)
  18. Tubular Phosphate Reabsorption ($TRP$) and $TmP/GFR$
  19. Albumin/Creatinine Ratios (UACR) and Protein/Creatinine Ratios (UPCR)
  20. Total Bicarbonate Deficit
  21. Measured Creatinine Clearance (24-hour urine)
  22. Kidney Failure Risk Equation (KFRE of 4 Variables)

The complete study guide is in the app

This page summarizes the outline. The full interactive study guide —with high-yield diagrams, clinical tables, and board review cases— can be read inside Epistemis, completely offline and ad-free.

Subject
Internal Medicine
Category
Clinical Specialties
Type
Study Guide
Sections
22
Reviewed
2026-08-02
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