1. What is Pediatric GFR Calculation?

The Pediatric GFR calculation estimates glomerular filtration rate in children using a simplified equation based on height and serum creatinine. This method is specifically designed for pediatric populations where traditional adult equations may not be accurate.

2. How Does the Calculator Work?

The calculator uses the Pediatric GFR equation:

Where:

• \( Height \) — Patient height in centimeters (cm)
• \( Scr \) — Serum creatinine in milligrams per deciliter (mg/dL)
• 0.413 — Empirical constant for pediatric population

Explanation: This equation provides a simple and effective way to estimate kidney function in children, accounting for body size through height measurement.

3. Importance of Pediatric GFR Calculation

Details: Accurate GFR estimation in children is essential for detecting kidney dysfunction early, monitoring chronic kidney disease progression, and adjusting medication dosages appropriately for pediatric patients.

4. Using the Calculator

Tips: Enter height in centimeters and serum creatinine in mg/dL. Ensure both values are positive and measured accurately. Height should be measured without shoes for best accuracy.

5. Frequently Asked Questions (FAQ)

Q1: What age range is this equation suitable for?
A: This equation is primarily designed for children and adolescents, typically from 1 to 18 years of age.

Q2: Why use height instead of weight in pediatric GFR calculation?
A: Height correlates better with muscle mass and kidney size in growing children, providing a more stable reference for GFR estimation.

Q3: What are normal eGFR values for children?
A: Normal eGFR values in children vary by age and body size, but generally range from 90-140 mL/min/1.73m², with higher values in younger children.

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

Q5: How often should GFR be monitored in children?
A: Frequency depends on clinical indication, but typically every 3-12 months for children with known kidney issues or risk factors.