1. What is Infant Weight Loss Percentage?

The infant weight loss percentage calculates how much weight a newborn has lost compared to their birth weight. It's an important metric for assessing neonatal health and feeding adequacy in the early days after birth.

2. How Does the Calculator Work?

The calculator uses the following equation:

Where:

• \( \text{birth weight} \) — The infant's weight at birth (grams)
• \( \text{current weight} \) — The infant'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 their birth weight in the first few days. Losses >10% may indicate feeding problems or other health issues requiring medical attention.

4. Using the Calculator

Tips: Enter both weights in grams (1 kg = 1000 g). Use accurate measurements taken at the same time of day for best results.

5. Frequently Asked Questions (FAQ)

Q1: What is normal newborn weight loss?
A: Most newborns lose 5-7% of birth weight in first 3-5 days, regaining birth weight by 10-14 days.

Q2: When should I be concerned about weight loss?
A: Consult a pediatrician if loss exceeds 7-10% or if weight isn't increasing by day 5.

Q3: How often should newborns be weighed?
A: First weigh-in at birth, then at 24-72 hours, and at 1 week. More frequent if concerns exist.

Q4: Does weight loss differ for breastfed vs formula-fed babies?
A: Breastfed infants may lose slightly more weight initially but patterns should be similar.

Q5: What factors affect newborn weight loss?
A: Feeding method, maternal fluids during delivery, infant health, and environmental temperature.