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Children's GFR Equation:
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The Children's GFR equation estimates glomerular filtration rate (GFR) specifically for pediatric populations using height and serum creatinine. This simplified formula provides a quick assessment of kidney function in children.
The calculator uses the Children's GFR equation:
Where:
Explanation: This equation accounts for the relationship between body size (height) and creatinine clearance in children, providing age-appropriate GFR estimation.
Details: Accurate GFR estimation in children is essential for detecting congenital kidney abnormalities, monitoring kidney function in pediatric renal diseases, and adjusting medication dosages for growing patients.
Tips: Enter height in centimeters and serum creatinine in mg/dL. Ensure accurate height measurement and use recent creatinine values for reliable results.
Q1: What age range is this equation suitable for?
A: This equation is typically used for children aged 1-18 years, though age-specific equations may provide better accuracy for specific age groups.
Q2: How do normal eGFR values differ in children?
A: Normal eGFR values in children vary by age and body size, generally ranging from 90-140 mL/min/1.73m², with higher values in younger children.
Q3: Why use height instead of age in this equation?
A: Height better correlates with muscle mass and kidney size in growing children, making it a more reliable predictor of GFR than age alone.
Q4: Are there limitations to this equation?
A: This simplified equation may be less accurate in children with extreme body habitus, malnutrition, or rapidly changing kidney function.
Q5: When should more complex equations be used?
A: For precise clinical decisions, consider using validated pediatric equations like Schwartz or CKD-EPI pediatric equations.