1. What is the Bedside Schwartz Equation?

The Bedside Schwartz equation is a simplified formula used to estimate glomerular filtration rate (GFR) in children. It uses height and serum creatinine to provide a quick assessment of kidney function in pediatric patients.

2. How Does the Calculator Work?

The calculator uses the Bedside Schwartz equation:

Where:

• \( Height \) — Height in centimeters (cm)
• \( Scr \) — Serum creatinine in milligrams per deciliter (mg/dL)
• \( 0.413 \) — Constant coefficient for the equation

Explanation: The equation provides a simple bedside calculation of estimated GFR specifically validated for pediatric populations.

3. Importance of eGFR Calculation in Children

Details: Accurate GFR estimation in children is essential for diagnosing kidney disease, monitoring kidney function, adjusting medication doses, and evaluating growth and development in relation to kidney health.

4. Using the Calculator

Tips: Enter height in centimeters and serum creatinine in mg/dL. Both values must be positive numbers. The calculator is specifically designed for pediatric patients.

5. Frequently Asked Questions (FAQ)

Q1: What age range is this equation appropriate for?
A: The Bedside Schwartz equation is validated for children and adolescents, typically from 1 to 18 years of age.

Q2: How does this differ from the full Schwartz equation?
A: The bedside version uses a constant of 0.413, while the full Schwartz equation uses different constants based on the creatinine assay method.

Q3: What are normal eGFR values in children?
A: Normal eGFR in children varies by age and body size, but generally ranges 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 very young infants, malnourished children, or those with unusual muscle mass.

Q5: When should this calculation be used?
A: Use for screening and monitoring kidney function in pediatric patients with suspected or known kidney disease.