SMH Nephrology Resident Resources Portal
Welcome to St. Michael's Hospital Nephrology
We're delighted to have you join our nephrology team at St. Michael's Hospital. To help you get started and make the most of your rotation, we've assembled these essential educational resources.
Below you'll find a collection of interactive presentations covering key aspects of nephrology care, from basic concepts to specific treatment modalities. We recommend starting with our welcome presentation, which includes audio narration to guide you through the fundamentals. The Housestaff Manual provides comprehensive reference material that you can consult throughout your rotation.
Housestaff Manual
Creatinine clearance estimate by Cockcroft-Gault equation in adults and older adolescents (age ≥16 years) (SI units)
About this Calculator
The Creatinine Clearance calculator using the Cockcroft-Gault equation is a valuable tool for estimating kidney function in adults and older adolescents (age ≥16 years). This calculator provides an estimate of creatinine clearance, which is an important indicator of renal function. It takes into account age, weight, sex, and serum creatinine levels to produce an estimate of creatinine clearance in mL/min.
The Cockcroft-Gault equation used in this calculator is:
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Fractional Excretion of Magnesium
About this Calculator
The Fractional Excretion of Magnesium (FEMg) calculator is a crucial tool for assessing renal magnesium handling, particularly in patients with hypomagnesemia. In normal physiological conditions, the kidneys should conserve magnesium when plasma levels are low. This calculator helps clinicians determine whether magnesium losses are occurring through the kidneys or other routes.
In patients with hypomagnesemia:
- An FEMg above 3-4% indicates renal magnesium wasting, suggesting that the kidneys are inappropriately excreting magnesium despite low serum levels.
- An FEMg below 2% usually points to an extrarenal source of magnesium loss, typically gastrointestinal.
Research has shown that in hypomagnesemic patients, those with extrarenal causes of magnesium depletion had a mean FEMg of 1.4% (range 0.5-2.7%), while those with renal magnesium loss had a mean FEMg of 15% (range 4-48%).
See a problem or have an idea for a tool?
Let us know here!
