1. What is Newborn Weight Loss Percentage?

The percentage weight loss calculation helps assess how much weight a newborn has lost since birth. It's particularly important in the first days after delivery to monitor adequate feeding and hydration.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( birth\_weight \) — Weight at birth (kg)
• \( current\_weight \) — Current weight measurement (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 their birth weight in the first few days. Losses greater than 10% may indicate feeding problems or other issues requiring medical attention.

4. Using the Calculator

Tips: Enter both weights in kilograms. For accurate results, use precise measurements from calibrated scales. Weights should be measured at the same time of day, preferably before a feed.

5. Frequently Asked Questions (FAQ)

Q1: What is normal weight loss for a newborn?
A: 5-7% loss in the first 3-4 days is typical. Most regain birth weight by 10-14 days.

Q2: When should I be concerned about weight loss?
A: If loss exceeds 10% or if baby isn't regaining weight by day 5, consult your pediatrician.

Q3: How often should newborns be weighed?
A: Typically at birth, 24 hours, 48 hours, and at first pediatric visit (3-5 days old).

Q4: Does this apply to premature babies?
A: Preemies may lose more weight (up to 15%) and take longer to regain it.

Q5: What affects newborn weight loss?
A: Feeding method (breast vs formula), maternal fluids during delivery, and infant health status.