1. What is Newborn Weight Loss Percentage?

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

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 Monitoring Weight Loss

Details: Newborns typically lose 5-7% of birth weight in the first few days, with breastfed babies often losing more than formula-fed infants. Losses >10% may indicate feeding problems or other health issues requiring evaluation.

4. Using the Calculator

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

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, typically regaining birth weight by 10-14 days of age.

Q2: When should I be concerned about weight loss?
A: Consult a healthcare provider if loss exceeds 7-10%, if weight loss continues beyond 5 days, or if baby shows signs of dehydration.

Q3: How often should newborns be weighed?
A: First weight at 24-72 hours after birth, then as needed based on feeding progress, typically every few days initially.

Q4: Does this apply to premature babies?
A: Preterm infants may have different weight loss patterns and thresholds - consult your neonatal provider for specific guidance.

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