1. What is Newborn Weight Loss Percentage?

The newborn weight loss percentage calculates how much weight a newborn has lost compared to their birth weight. This is an important metric in neonatal care to assess feeding adequacy and hydration status.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( \text{birth weight} \) — The newborn's weight at birth (grams)
• \( \text{current weight} \) — The newborn's current weight (grams)

Explanation: The formula calculates the percentage of weight lost relative to the original birth weight.

3. Importance of Monitoring Weight Loss

Details: Monitoring weight loss helps identify excessive loss which may indicate feeding problems, dehydration, or other medical issues. Most newborns lose 5-7% of birth weight in first days.

4. Using the Calculator

Tips: Enter birth weight and current weight in grams. Both values must be positive numbers. The calculator will compute the percentage of weight lost.

5. Frequently Asked Questions (FAQ)

Q1: What is normal newborn weight loss?
A: Typically 5-7% in first 3-5 days. More than 10% loss may require evaluation.

Q2: When should I be concerned about weight loss?
A: If loss exceeds 10% or continues beyond first week, consult pediatrician.

Q3: How often should newborns be weighed?
A: First weight at birth, then at 24-72 hours, and at first pediatric visit.

Q4: Does weight loss differ for breastfed vs formula-fed babies?
A: Breastfed babies may lose slightly more initially but catch up by 2 weeks.

Q5: When do newborns regain birth weight?
A: Most regain by 10-14 days of age with adequate feeding.