1. What is Newborn Weight Loss Percentage?

The newborn weight loss percentage calculates how much weight a baby has lost compared to their birth weight. This is important for assessing feeding adequacy and identifying potential health issues in the early postnatal period.

2. How Does the Calculator Work?

The calculator uses the following equation:

Where:

• \( \text{birth weight} \) — Baby's weight at birth (grams)
• \( \text{current weight} \) — Baby'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: Newborns typically lose 5-7% of birth weight in first days, with breastfed babies often losing more. Excessive loss (>10%) may indicate feeding problems or other issues requiring medical attention.

4. Using the Calculator

Tips: Enter birth weight and current weight in grams. Both values must be valid (weight > 0). Weights should be measured using the same scale for accuracy.

5. Frequently Asked Questions (FAQ)

Q1: What is normal weight loss for newborns?
A: 5-7% is typical in first 3-5 days, with most babies regaining birth weight by 10-14 days.

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

Q3: How often should newborns be weighed?
A: Typically at birth, 24-72 hours after birth, and at first pediatric visit (3-5 days old).

Q4: Does weight loss differ between breastfed and formula-fed babies?
A: Yes, breastfed babies often lose slightly more weight initially but catch up by 2 weeks.

Q5: What factors affect newborn weight loss?
A: Feeding method, maternal fluids during labor, timing of first feeding, and infant health status.