1. What is the Estimated Bladder Capacity by Age?

Definition: This calculator estimates pediatric bladder capacity based on the child's age using an empirical formula.

Purpose: Helps healthcare providers and parents assess normal bladder development in children.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V \) — Estimated bladder capacity (milliliters)
• \( \text{age} \) — Child's age (years)

Explanation: The formula provides a rough estimate of normal bladder capacity development in children.

3. Importance of Bladder Capacity Estimation

Details: Helps evaluate urinary frequency, incontinence, and bladder function in pediatric patients.

4. Using the Calculator

Tips: Enter the child's age in years (0-18). The calculation is most accurate for children aged 2-12 years.

5. Frequently Asked Questions (FAQ)

Q1: Is this formula accurate for all children?
A: It provides an estimate; normal capacity can vary by ±15% among healthy children.

Q2: What's the maximum age this applies to?
A: The formula is designed for children. Adult bladder capacity is typically 400-600ml.

Q3: Why is bladder capacity important?
A: Helps diagnose conditions like urinary frequency, enuresis, or bladder dysfunction.

Q4: Are there other formulas?
A: Yes, some use (age + 1) × 30 or (age + 2) × 30, but all provide similar estimates.

Q5: When should I be concerned about bladder capacity?
A: If measured capacity is consistently <50% or >150% of estimated, consult a pediatric urologist.