1. What is the Australian Paediatric eGFR Equation?

The Australian Paediatric eGFR equation, based on the Schwartz formula, estimates glomerular filtration rate (GFR) in children using height and serum creatinine. This simplified version is widely used in Australian paediatric practice for quick assessment of kidney function.

2. How Does the Calculator Work?

The calculator uses the Australian paediatric eGFR equation:

Where:

• \( Height \) — Child's height in centimeters (cm)
• \( Scr \) — Serum creatinine in milligrams per deciliter (mg/dL)
• \( 0.413 \) — Empirical constant derived for the Australian population

Explanation: This equation provides a quick and reliable estimate of GFR in children, correlating height with muscle mass and creatinine production.

3. Importance of Paediatric eGFR Calculation

Details: Accurate GFR estimation in children is essential for detecting congenital kidney abnormalities, monitoring kidney function in chronic diseases, and adjusting medication doses appropriately for paediatric patients.

4. Using the Calculator

Tips: Enter height in centimeters and serum creatinine in mg/dL. Ensure measurements are recent and accurate. This calculator is specifically validated for paediatric use in Australian populations.

5. Frequently Asked Questions (FAQ)

Q1: What age range is this equation suitable for?
A: This equation is validated for children from 1 to 18 years old. For infants under 1 year, different equations may be more appropriate.

Q2: Why is height used in paediatric eGFR calculations?
A: Height correlates with muscle mass, which determines creatinine production. This relationship is more consistent in children than using weight or body surface area.

Q3: What are normal eGFR values in children?
A: Normal eGFR in children varies by age but generally ranges from 90-140 mL/min/1.73m². Values should be interpreted in context with the child's age and clinical condition.

Q4: Are there limitations to this equation?
A: This equation may be less accurate in children with extreme body compositions, muscle wasting diseases, or rapidly changing kidney function.

Q5: How does this differ from the original Schwartz formula?
A: This Australian version uses a constant of 0.413, which has been validated specifically for Australian paediatric populations, while the original Schwartz formula uses different constants.