1. What is Percentage Weight Loss Calculation?

The Percentage Weight Loss calculation measures how much weight a baby has lost compared to their birth weight. This is particularly important in the first weeks after birth to monitor adequate feeding and growth.

2. How Does the Calculator Work?

The calculator uses the weight loss percentage formula:

Where:

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

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

3. Importance of Weight Loss Monitoring

Details: Monitoring weight loss helps identify feeding problems early. Normal newborns may lose 5-7% of birth weight in first days, but losses >10% may indicate need for intervention.

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 newborns?
A: Most newborns lose 5-7% of birth weight in first 3-5 days, then regain by 10-14 days. Losses >10% warrant evaluation.

Q2: How often should weight be checked?
A: Daily in first week if concerns exist, otherwise at pediatric visits (3-5 days and 2 weeks after birth).

Q3: When should I be concerned?
A: If weight loss exceeds 10%, if baby isn't back to birth weight by 2 weeks, or if poor feeding/signs of dehydration exist.

Q4: Does breastfeeding affect weight loss?
A: Breastfed babies may lose slightly more weight initially but should follow similar patterns of regain.

Q5: How accurate is this calculation?
A: Accuracy depends on precise weight measurements. Use the same calibrated scale for both weights when possible.