Ashwin Lewis
It is relatively normal for newborns to spit up or even throw up while sleeping, as their digestive systems are still developing. This can be alarming for parents, but it is usually not a cause for major concern. Spit-up is a common occurrence in infants and typically happens when babies have difficulty digesting milk or formula. It is important to understand the difference between harmless spit-up and more concerning symptoms such as forceful vomiting or poor weight gain.
| Characteristics | Values |
|---|---|
| Commonality | Relatively normal for newborns to spit up or throw up while sleeping |
| Cause | Difficulty in digesting milk or formula, immature digestive system, small stomach, and immature esophageal sphincter |
| Prevention | Adjusting sleeping position, burping techniques, and feeding techniques |
| Safety | Babies have a natural reflex that prevents choking on spit-up, but choking is a medical emergency |
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What You'll Learn
Spit-up is common in newborns with immature digestive systems
It is common for newborns to spit up in their sleep due to their immature digestive systems. This can be alarming for parents, especially when it seems like the baby has spit up curdled milk or thrown up long after a feeding session. However, it is important to understand that spit-up is typically not a cause for major concern.
Spit-up occurs when the contents of the baby's stomach, usually milk or formula, flow back up into the oesophagus and sometimes out of the mouth. This happens because the valve between the stomach and the oesophagus, known as the lower oesophageal sphincter, is still developing and maturing in infants. As a result, the milk or formula can easily come back up, especially after feeding or if the baby lies down soon after feeding.
Babies who are particularly full, have swallowed air during feeding, or have sensitive stomachs may be more prone to spitting up. It is recommended to burp the baby gently during and after feeding sessions to reduce the amount of air swallowed, which can contribute to spit-up. Adjusting the feeding techniques can also help, such as ensuring the baby's head is slightly elevated during feeding and allowing them to feed at their own pace to avoid overfeeding.
While it is generally safe for babies to sleep on their backs to reduce the risk of Sudden Infant Death Syndrome (SIDS), it is important to be cautious about elevating their heads using wedges or pillows. The American Academy of Pediatrics (AAP) does not recommend placing items in the baby's sleeping space to elevate them or prop their heads up, as it may not prevent reflux symptoms and can be unsafe if the baby rolls into an unsafe position. Instead, consider adjusting the crib by placing a firm wedge or pillow under the mattress, never directly under the baby, to elevate their head slightly and reduce the likelihood of spit-up.
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Babies have a natural reflex that prevents choking on spit-up
It is relatively normal for newborns to spit up or even throw up while sleeping, as their digestive systems are still developing. Newborns have small stomachs and immature oesophageal sphincters, which can cause milk to come back up, especially after feeding.
Healthy babies have natural protective reflexes that prevent choking on spit-up. These reflexes are involuntary reactions to certain stimuli, and they help babies survive. One such reflex is the coughing reflex, which helps babies clear their airways if any fluid enters. The trachea (windpipe) is located anterior to the oesophagus, making it less likely for spit-up to enter the airway when a baby is on their back. Babies also have a sucking reflex, which is a survival instinct. When you touch your baby's mouth or insert your nipple to breastfeed, they will begin sucking. This is a natural reflex, but it is not easy, as newborns have to figure out how to suck while breathing and swallowing simultaneously.
The startle reflex, or Moro reflex, is another protective response. When a baby's head falls backward or they are startled by a loud noise, they will extend their arms and legs, reaching out with their palms facing up and thumbs sticking out. They may also cry loudly. When you support their head again, they will quickly bring their arms together and relax. The stepping reflex may help your newborn instinctively "crawl" to your breast immediately after birth when they are lying on your chest. If you hold your baby upright and let their soles touch a flat surface, they should place one foot in front of the other in a "walking" motion.
It is important to remember that spitting up is common and usually harmless. Gently turn the baby's head to the side if it isn't already to help any remaining spit-up drain out of the mouth. Wipe away any spit-up from around the mouth and nose with a soft cloth. Check the baby's breathing and ensure it is normal and unobstructed. While most instances of spitting up are harmless, contact a paediatrician if you notice signs of dehydration, such as fewer wet nappies, a dry mouth, or a sunken soft spot on the head.
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Safe sleeping positions for newborns that spit up
It is common for newborns to spit up during their sleep in the first few months of their lives. This can be due to several reasons, such as acid reflux or overeating. While this can be a cause of concern for parents, it is important to know that there are safe sleeping positions that can reduce the risk of choking and other hazards.
The National Institutes of Health (NIH) recommends placing your newborn on their back to sleep as the absolute most effective way to lower the risk of sudden unexpected infant death (SUID). Sleeping on the back allows for easier breathing and makes it virtually impossible for spit-up or vomit to enter the trachea and cause choking. Additionally, research shows that babies who sleep on their backs are less prone to fevers, stuffy noses, and ear infections.
Stomach sleeping is not recommended for newborns as it can obstruct their airway, hinder breathing, and increase the chances of aspirating or choking. It may also interfere with the baby's ability to regulate heat, leading to overheating, another risk factor for SUID. Furthermore, stomach sleeping can cause "rebreathing," where the baby inhales stale air with increased carbon dioxide and reduced oxygen levels.
Side sleeping is also not considered a safe alternative. It is unstable, and babies are likely to roll onto their stomachs, increasing the risk of SIDS. Placing pillows or rolled cloths to prevent rolling is not advised as they pose risks of entanglement or suffocation.
To ensure your newborn remains safely on their back, consider a secure swaddling system or a bassinet that prevents rolling. Place your baby with their feet at the bottom of the cot, crib, or bassinet to prevent them from wriggling under the covers and suffocating. Tuck blankets in loosely but securely, no higher than the baby's shoulders, and regularly check that their face and head remain uncovered.
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How to prevent a newborn from spitting up
Spitting up is very common in newborns and young infants as their digestive systems are still developing. It usually occurs after feedings due to swallowing air, overfeeding, or immature muscles in the oesophagus. While it may often look like a lot, babies usually spit up only a couple of mouthfuls of breast milk or formula.
- Burp your baby several times during and after feeding. To do so, sit your baby upright with your hand supporting their head. Let your baby lean forward slightly, bending at the waist. Gently pat your baby's back.
- Avoid burping your baby over your shoulder as this puts pressure on the stomach, which may cause more spitting up.
- Feed smaller amounts of breast milk or formula more frequently. Avoid large amounts at one time.
- Hold your baby upright for 15 to 30 minutes after feeding. Avoid a lot of movement during and immediately after feeding.
- Slightly elevate the head of the baby's crib so they can sleep with their heads slightly up.
- If you are breastfeeding, monitor your diet closely. If you feel certain foods might be upsetting your baby's stomach, try avoiding them for a while and observe if your baby spits up less breast milk.
- If your baby has been diagnosed with acid reflux, talk to your baby's healthcare provider about trying a different formula or removing certain foods from the mother's diet (often cow's milk).
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When to seek medical advice for a newborn spitting up
Spitting up is a common occurrence in newborns, with about 50% of babies spitting up, according to the American Academy of Pediatrics. This usually happens during or after feeding and is caused by an immature digestive system, stomach bloating, or distension. In most cases, spitting up is perfectly normal and harmless as long as the baby is gaining weight adequately. However, there are certain instances where you should seek medical advice.
Firstly, if your baby is spitting up and experiencing symptoms of gastro-oesophageal reflux disease (GERD), especially if they are vomiting, you should consult a doctor. GERD is the medical term for problematic acid reflux, which occurs when formula or breast milk in the stomach backs up into the oesophagus and mouth. While reflux usually improves as your baby gets older, it is important to seek medical attention if something seems amiss or there is a sudden change.
Secondly, if you notice any changes in your baby's feeding and spit-up habits, such as spitting up more than 1-2 tablespoons at a time or forceful projectile vomiting, it is important to have them evaluated by a pediatrician. Additionally, if your baby's spit-up is green, yellow, bloody, or contains a substance resembling coffee grounds, seek immediate medical attention as this may indicate a more serious condition.
Lastly, if your baby is not gaining weight adequately, is frequently coughing, or displaying colicky behaviour, these could be red flags that require medical attention. While spit-up is usually nothing to worry about, it is always better to seek professional advice if you have any concerns or notice any unusual symptoms.
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Frequently asked questions
Yes, it’s relatively normal for newborns to spit up or even throw up while sleeping, as their digestive systems are still developing.
While it can be alarming to see your baby spit up while sleeping, it’s usually not a cause for major concern. Spit-up is a common occurrence in infants and typically happens when babies have difficulty digesting milk or formula.
You can reduce the chances of your baby spitting up in their sleep by adjusting their sleeping position. Placing your baby on their back to sleep is recommended to reduce the risk of Sudden Infant Death Syndrome (SIDS). You can also elevate the head of the crib slightly with a firm wedge or pillow under the mattress, but never place a pillow directly under the baby.
Spitting up is common during the first few months and generally isn't a cause for concern unless it becomes forceful vomiting or is accompanied by other symptoms like poor weight gain.
Choking is a medical emergency. If your baby is choking, perform baby CPR right away and call 911.
