1. What is Percentage Weight Loss in Newborns?

Percentage weight loss is a measure of how much weight a newborn has lost compared to their birth weight. It's particularly important for formula-fed babies as excessive weight loss may indicate feeding problems.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( \text{Birth Weight} \) — Newborn's weight at birth (kg)
• \( \text{Current Weight} \) — Newborn's current weight (kg)

Explanation: The formula calculates what percentage of the original birth weight has been lost.

3. Importance of Monitoring Weight Loss

Details: Monitoring weight loss helps identify potential feeding issues. Formula-fed newborns typically lose less weight than breastfed infants (5-7% vs 7-10%). Losses >10% may warrant evaluation.

4. Using the Calculator

Tips: Enter birth weight and current weight in kilograms. Both values must be positive numbers. Weights should be measured using the same scale for accuracy.

5. Frequently Asked Questions (FAQ)

Q1: What is normal weight loss for formula-fed newborns?
A: Typically 5-7% in first 3-4 days, with regain by 10-14 days. More than 7% may need evaluation.

Q2: When should I be concerned about weight loss?
A: If loss exceeds 10%, or if baby isn't regaining birth weight by 2 weeks.

Q3: How often should weight be checked?
A: First weight check at 3-5 days old, then as recommended by pediatrician.

Q4: Does this calculator work for breastfed babies?
A: Yes, but normal ranges differ (7-10% loss typically acceptable).

Q5: What affects weight loss in formula-fed newborns?
A: Feeding volume, frequency, formula concentration, and infant health status.