My Baby Has Duodenal Atresia
Medically reviewed by Dr. Michael Okonkwo, MD, FAAP · Board-Certified Neonatologist
Content reviewed against published CDC, NIH, Children's Hospital guidelines
Last reviewed:
If your baby has been diagnosed with or you suspect has duodenal atresia, here is what the evidence says.
The short answer
Duodenal atresia is a condition where the first part of the small intestine (duodenum) is completely blocked or not formed properly, preventing food from passing from the stomach into the intestines. It is often detected prenatally on ultrasound with the characteristic "double bubble" sign (two fluid-filled areas representing the stomach and dilated duodenum). Babies typically present with bilious (green) vomiting within hours of birth. About 30% of babies with duodenal atresia also have Down syndrome. Surgery to reconnect the two ends of the duodenum (duodenoduodenostomy) is performed shortly after birth, and outcomes are excellent.
Key takeaways
- Duodenal atresia is a condition where the first part of the small intestine (duodenum) is completely blocked or not formed properly, preventing food from passing from the stomach into the intestines. It is often detected prenatally on ultrasound with the characteristic "double bubble" sign (two fluid-filled areas representing the stomach and dilated duodenum). Babies typically present with bilious (green) vomiting within hours of birth. About 30% of babies with duodenal atresia also have Down syndrome. Surgery to reconnect the two ends of the duodenum (duodenoduodenostomy) is performed shortly after birth, and outcomes are excellent.
- Usually normal when: Duodenal atresia was diagnosed prenatally and you are being followed by a specialist team
- Call your doctor if: Your baby has bilious (green) vomiting at any time, especially in the newborn period
- Varies by age — see the age-by-age breakdown below
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Parents everywhere have the same worry. You are doing the right thing by looking into it.
What Parents Should Know
According to CDC, NIH, Children's Hospital guidelines, duodenal atresia is a condition where the first part of the small intestine (duodenum) is completely blocked or not formed properly, preventing food from passing from the stomach into the intestines. It is often detected prenatally on ultrasound with the characteristic "double bubble" sign (two fluid-filled areas representing the stomach and dilated duodenum). Babies typically present with bilious (green) vomiting within hours of birth. About 30% of babies with duodenal atresia also have Down syndrome. Surgery to reconnect the two ends of the duodenum (duodenoduodenostomy) is performed shortly after birth, and outcomes are excellent. At Prenatal, duodenal atresia is often suspected on prenatal ultrasound when the "double bubble" sign is seen - two fluid-filled areas in the fetal abdomen representing the stomach and the dilated proximal duodenum. Polyhydramnios (excess amniotic fluid) is common because the baby cannot swallow and absorb amniotic fluid normally. Because of the association with Down syndrome in about 30% of cases, genetic testing (amniocentesis) is typically offered. Delivery should be planned at a center with NICU and pediatric surgery. It is generally considered normal when duodenal atresia was diagnosed prenatally and you are being followed by a specialist team. However, you should contact your pediatrician promptly if your baby has bilious (green) vomiting at any time, especially in the newborn period.
Normal vs. Concerning
When to Seek Immediate Care
- Your baby has bilious (green) vomiting at any time, especially in the newborn period
- Your baby develops a distended abdomen with vomiting and stops passing stool
- Your baby has signs of dehydration: fewer wet diapers, dry mouth, sunken soft spot, lethargy
- Your baby has fever or signs of infection at the surgical site
- Your newborn is not feeding and is vomiting all feeds within the first 24-48 hours
By Age
What to expect by age
Prenatal
Duodenal atresia is often suspected on prenatal ultrasound when the "double bubble" sign is seen - two fluid-filled areas in the fetal abdomen representing the stomach and the dilated proximal duodenum. Polyhydramnios (excess amniotic fluid) is common because the baby cannot swallow and absorb amniotic fluid normally. Because of the association with Down syndrome in about 30% of cases, genetic testing (amniocentesis) is typically offered. Delivery should be planned at a center with NICU and pediatric surgery.
0-48 hours
Babies with duodenal atresia typically develop bilious (green) vomiting within the first 24-48 hours of life because stomach contents cannot pass into the blocked intestine. An X-ray showing the "double bubble" sign confirms the diagnosis. A nasogastric tube is placed to decompress the stomach, and IV fluids are started. Surgery (duodenoduodenostomy) is performed once the baby is stable, usually within the first few days of life. The surgeon creates a connection between the two ends of the duodenum to bypass the blockage.
3-14 days
After surgery, the duodenum takes time to begin functioning. Your baby will receive nutrition intravenously (TPN) while bowel function recovers. Feedings are started gradually through the nasogastric tube or by mouth as the bowel starts working. It may take one to two weeks before your baby tolerates full feeds. The surgical team will monitor for complications such as anastomotic leak, though this is uncommon.
2 weeks - 3 months
Most babies are feeding well and growing normally by this time. If your baby also has Down syndrome, early intervention services and additional monitoring (including cardiac evaluation, thyroid function, and hearing screening) will be coordinated. Some babies may have temporary gastroesophageal reflux or feeding difficulties that improve with time. Regular follow-up with your pediatrician and pediatric surgeon ensures proper recovery.
3 months+
Long-term outcomes after duodenal atresia repair are excellent. The vast majority of children eat, grow, and develop normally. Rarely, some may develop bowel obstruction from adhesions (scar tissue) later in life. Children with associated Down syndrome will have their own developmental trajectory and will benefit from early intervention programs and ongoing pediatric support. Regular pediatric follow-up continues as with all children.
What to Tell Your Pediatrician
- Describe when you first noticed has duodenal atresia and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your baby is having feeding difficulties or is not gaining weight as expected.
- Mention if you notice your baby is spitting up frequently or seems uncomfortable after feeds.
- Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
- Bring a list of any questions or observations you want to discuss at the appointment.
What Should You Do?
When to take action
- Duodenal atresia was diagnosed prenatally and you are being followed by a specialist team
- Your baby had successful surgery and is gradually tolerating feeds in the NICU
- Your baby is feeding well and gaining weight after discharge
- Your baby is being evaluated and supported for any associated conditions such as Down syndrome
- Your baby is having feeding difficulties or is not gaining weight as expected
- You notice your baby is spitting up frequently or seems uncomfortable after feeds
- You have questions about associated conditions or follow-up care
- You are concerned about your baby's growth or development
- Your baby has bilious (green) vomiting at any time, especially in the newborn period
- Your baby develops a distended abdomen with vomiting and stops passing stool
- Your baby has signs of dehydration: fewer wet diapers, dry mouth, sunken soft spot, lethargy
- Your baby has fever or signs of infection at the surgical site
- Your newborn is not feeding and is vomiting all feeds within the first 24-48 hours
What You Can Do at Home
- Keep track of when you notice has duodenal atresia — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that duodenal atresia was diagnosed prenatally and you are being followed by a specialist team — this is generally within the range of normal.
- At Prenatal, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Follow any care instructions from your pediatrician. Keep a written log of symptoms to bring to appointments.
- While monitoring at home, seek immediate care if your baby has bilious (green) vomiting at any time, especially in the newborn period.
Related Conditions
My Baby Is Vomiting Green or Yellow (Bile)
Bilious (green or bright yellow) vomiting in a baby is a medical emergency until proven otherwise. While older children and adults occasionally vomit bile with prolonged vomiting, in infants, green vomiting can be a sign of a bowel obstruction such as malrotation with volvulus, which requires emergency surgery. If your baby vomits green or bright yellow fluid, seek immediate medical attention.
Down Syndrome Baby Development
Down syndrome (trisomy 21) is the most common chromosomal condition, affecting about 1 in 700 babies. Children with Down syndrome typically reach all developmental milestones — sitting, walking, talking — but on their own timeline, which is often later than typical peers. With early intervention, supportive therapies, and appropriate medical care, children with Down syndrome lead fulfilling, active lives.
Forceful (Projectile) Vomiting in Newborns
Occasional forceful spit-up can happen in newborns. However, true projectile vomiting (stomach contents shooting forcefully, sometimes across the room) that worsens over days to weeks should be evaluated promptly. In babies 2-8 weeks old, progressive projectile vomiting is a classic sign of pyloric stenosis, a treatable condition requiring surgery.
Related Resources
Vomiting Decision Tree
Evaluate vomiting severity and decide when to call the doctor.
Month-by-Month Development
Detailed monthly development guides from birth through 24 months.
When to Call the Doctor
General guide on when to call the pediatrician, visit urgent care, or go to the ER.
Frequently asked questions
Is has duodenal atresia normal?
When should I call the doctor about has duodenal atresia?
When is has duodenal atresia normal?
What causes has duodenal atresia?
What should I mention to my pediatrician about has duodenal atresia?
Is has duodenal atresia normal at Prenatal?
Is has duodenal atresia normal at 0-48 hours?
Should I go to the ER for has duodenal atresia?
Does has duodenal atresia go away on its own?
References
- [1]Centers for Disease Control and Prevention. Facts about Duodenal Atresia. Birth Defects, 2024. CDC
- [2]National Institutes of Health. Duodenal Atresia. MedlinePlus Medical Encyclopedia, 2024. NIH
- [3]Boston Children's Hospital. Duodenal Atresia: Symptoms, Diagnosis, and Treatment. Children's Hospital
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss My Baby Has Duodenal Atresia.
Things to mention
- Describe when you first noticed has duodenal atresia and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your baby is having feeding difficulties or is not gaining weight as expected.
- Mention if you notice your baby is spitting up frequently or seems uncomfortable after feeds.
- Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- Your baby is having feeding difficulties or is not gaining weight as expected
- You notice your baby is spitting up frequently or seems uncomfortable after feeds
- You have questions about associated conditions or follow-up care
Urgent signs to report immediately
- Your baby has bilious (green) vomiting at any time, especially in the newborn period
- Your baby develops a distended abdomen with vomiting and stops passing stool
- Your baby has signs of dehydration: fewer wet diapers, dry mouth, sunken soft spot, lethargy
My notes
From ismybabyalright.com — free, evidence-based baby health guides
All content follows our editorial policy and is reviewed against published clinical guidelines.
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Related Resources
Bottom line
Most cases of has duodenal atresia are normal. Talk to your pediatrician if your baby has bilious (green) vomiting at any time, especially in the newborn period.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
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Related Medical Concerns
My Baby Is Vomiting Green or Yellow (Bile)
Bilious (green or bright yellow) vomiting in a baby is a medical emergency until proven otherwise. While older children and adults occasionally vomit bile with prolonged vomiting, in infants, green vomiting can be a sign of a bowel obstruction such as malrotation with volvulus, which requires emergency surgery. If your baby vomits green or bright yellow fluid, seek immediate medical attention.
Down Syndrome Baby Development
Down syndrome (trisomy 21) is the most common chromosomal condition, affecting about 1 in 700 babies. Children with Down syndrome typically reach all developmental milestones — sitting, walking, talking — but on their own timeline, which is often later than typical peers. With early intervention, supportive therapies, and appropriate medical care, children with Down syndrome lead fulfilling, active lives.
Forceful (Projectile) Vomiting in Newborns
Occasional forceful spit-up can happen in newborns. However, true projectile vomiting (stomach contents shooting forcefully, sometimes across the room) that worsens over days to weeks should be evaluated promptly. In babies 2-8 weeks old, progressive projectile vomiting is a classic sign of pyloric stenosis, a treatable condition requiring surgery.
My Baby's Head Shape Looks Abnormal
Many babies develop temporary head shape irregularities that are completely normal. A cone-shaped head from vaginal delivery reshapes within days. Mild positional flattening (plagiocephaly) from sleeping on the back is very common and usually improves with repositioning and tummy time. However, head shape changes involving ridges, a persistently bulging fontanelle, or rapid head growth changes should be evaluated to rule out craniosynostosis.
Achondroplasia (Dwarfism) in Babies
Achondroplasia is the most common form of short-limbed dwarfism, affecting about 1 in 15,000 to 40,000 births. It is caused by a mutation in the FGFR3 gene and is usually apparent at birth with characteristic features including short limbs, a larger head, and a prominent forehead. Intelligence is normal. With monitoring for specific complications and supportive care, children with achondroplasia lead full, active, and independent lives.
Adenoid Hypertrophy and Breathing
Adenoids are lymphoid tissue located behind the nose that help fight infection in young children. When adenoids become enlarged (adenoid hypertrophy), they can block the nasal airway, causing chronic mouth breathing, snoring, nasal speech, and sleep-disordered breathing. Enlarged adenoids are most common between ages 2-7 and are a leading cause of obstructive sleep apnea in young children. Treatment ranges from watchful waiting and nasal steroids to surgical removal (adenoidectomy) if breathing or sleep is significantly affected.