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Pediatric eGFR using Bedside Schwartz:
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The Pediatric Bedside Schwartz equation estimates glomerular filtration rate (GFR) in children using height and serum creatinine. It is specifically validated for pediatric populations and provides a quick, reliable assessment of kidney function in children.
The calculator uses the Pediatric Bedside Schwartz equation:
Where:
Explanation: This simplified equation accounts for the relationship between height, creatinine levels, and kidney function in pediatric patients, providing an age-appropriate GFR estimation.
Details: Accurate GFR estimation in children is essential for diagnosing kidney diseases, monitoring treatment response, adjusting medication doses, and assessing growth and development related to kidney function.
Tips: Enter height in centimeters and serum creatinine in mg/dL. Ensure both values are positive and measured accurately. This calculator is specifically designed for pediatric patients.
Q1: What age range is this equation suitable for?
A: The Bedside Schwartz equation is validated for children and adolescents, typically from 1 to 18 years of age.
Q2: Why is height used in pediatric eGFR calculations?
A: Height serves as a surrogate for muscle mass in children, which correlates with creatinine production and thus provides a more accurate 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: When should this equation not be used?
A: This equation may be less accurate in children with extreme body habitus, muscle wasting diseases, amputations, or rapidly changing kidney function.
Q5: How often should eGFR be monitored in children?
A: Monitoring frequency depends on the clinical situation - from every 3-6 months in stable chronic kidney disease to more frequently during acute illness or treatment changes.