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 a crucial metric for assessing newborn health and breastfeeding adequacy in the first days after birth.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

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

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 requiring intervention. Regular monitoring helps ensure proper nutrition and growth.

4. Using the Calculator

Tips: Enter birth weight and current weight in pounds (lbs). Both values must be positive numbers, with current weight equal to or less than birth weight.

5. Frequently Asked Questions (FAQ)

Q1: What is normal weight loss for a newborn?
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: When should I be concerned about weight loss?
A: Consult a pediatrician if loss exceeds 7% in first 72 hours, 10% at any time, or if baby isn't regaining by day 5.

Q3: How often should newborns be weighed?
A: Typically at birth, 24 hours, hospital discharge, and first pediatric visit (3-5 days old). More if concerns exist.

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

Q5: What causes excessive weight loss?
A: Possible causes include insufficient milk intake, feeding difficulties, jaundice, or medical conditions.