Ensuring your newborn stays properly hydrated is extremely important, especially in the first few weeks of life. Newborns are at higher risk of dehydration because their bodies are still learning to regulate fluid levels. Thankfully, with some effort and vigilance from parents, keeping baby hydrated is very achievable.
How much hydration does a newborn need?
The amount of hydration a newborn needs varies based on their age and weight:
- 0-3 days old: 60-80 mL per kg per day
- 4-28 days old: 90-120 mL per kg per day
So for a 7 lb (3.2 kg) newborn, that would equal:
- 0-3 days: 192-256 mL/day
- 4-28 days: 288-384 mL/day
These are general guidelines only. Your pediatrician can provide more customized fluid recommendations based on your baby’s specific needs.
How can I tell if my newborn is getting enough fluids?
Watch for these signs that baby is staying hydrated:
- Wet diapers: At least 1 wet diaper for every feeding
- Urine color: Clear or pale yellow
- Soft fontanels (soft spot on head)
- Moist mouth and eyes
- Good skin elasticity
Signs of dehydration include:
- Decrease in wet diapers
- Dark yellow or orange urine
- Sunken fontanels
- Dry mouth or eyes
- Fussiness or lethargy
- Poor skin elasticity (skin remains tented when pinched)
How to keep baby hydrated
1. Breastfeed on demand
Breastmilk provides all the hydration and nutrition a newborn needs. Nurse at least 8-12 times per day whenever baby shows feeding cues like rooting, mouthing, or crying.
2. Feed an adequate amount of formula
If formula feeding, offer 2-3 ounces every 2-3 hours. Follow label instructions carefully and talk to your pediatrician if you feel baby is still hungry.
3. Offer a pacifier
Sucking on a pacifier stimulates saliva production which helps hydrate baby’s mouth.
4. Avoid water supplements
Healthy newborns don’t need extra water. It can lead to low sodium levels in baby’s blood.
5. Consider electrolytes
In cases of dehydration or vomiting/diarrhea, your pediatrician may recommend an oral electrolyte solution like Pedialyte to replenish fluids and minerals.
6. Use a humidifier
Running a cool mist humidifier by baby’s crib can help keep their skin and nasal passages hydrated.
7. Monitor room temperature
Make sure baby’s room is not overly warm which can lead to dehydration from sweating.
8. Weigh regularly
Use an infant scale to monitor weight gains and losses. Notify your pediatrician if weight fluctuates significantly.
9. Keep up skin-to-skin
Snuggle time helps regulate baby’s temperature and provides closeness. Newborns cannot get too cold from skin-to-skin.
10. Talk to your pediatrician
Discuss any concerns about hydration with your baby’s doctor. Premature or sick infants may need additional fluids.
When to call the doctor about dehydration
Contact your pediatrician right away if you notice any of the following:
- No wet diaper for over 8 hours
- Dark, concentrated urine
- Excessive fussiness or sleepiness
- Sunken eyes or fontanels
- Dry or sticky mouth
- Decreased skin elasticity
- Weight loss > 10% of birth weight
Severe dehydration requires immediate medical treatment with IV fluids. Left untreated, dehydration can be life-threatening for infants.
Conclusion
Keeping your newborn well-hydrated provides the foundation for their health and development. Focus on feeding cues, diaper counts, weight checks, and talk to your pediatrician if you notice any signs of low fluids. With attentive care and early treatment if needed, you can ensure your little one stays properly hydrated.