9 views 0 likes

Dr. Todd Ponsky

Pediatric Surgery · View profile →

Omphalocele & Gastroschisis

Video Published 2022-03-23 Updated 2025-10-08

Topic Overview

Discussion of gastroschisis and omphalocele, two congenital abdominal wall defects with distinct characteristics. Gastroschisis is a full-thickness defect lateral to the umbilicus without membrane coverage, occurring in otherwise normal babies from an intrauterine event, while omphalocele is a midline defect with membrane coverage associated with chromosomal anomalies in 35-90% of cases. Management approaches range from primary closure for small defects with pristine bowel to staged closure for large defects or compromised bowel, with Cincinnati Children's Hospital favoring sutureless closure in many cases. Prenatal surveillance is critical due to risks of intrauterine growth restriction and fetal demise.

Key Takeaways

Gastroschisis occurs in otherwise normal babies; omphalocele has chromosomal anomalies in 35-90% of cases. (0:55)
Monthly fetal growth tracking is essential due to risk of intrauterine growth restriction and fetal demise. (2:12)
Primary closure requires pristine bowel and adequate abdominal domain; staged closure for large defects or compromised bowel. (5:32)
Sutureless closure is now favored at Cincinnati Children's, allowing skin to grow over with spontaneous defect closure. (6:46)
Immediate postnatal priority: minimize heat and fluid loss to prevent dehydration, hypothermia, and acidosis. (5:02)

Inside this episode

Kai, the Library's AI content creator, listened to this episode and mapped who's speaking, the chapters, key claims, and cases. Every item links to the exact moment in the recording.

AI-enriched

Who's speaking

Todd Ponski — host
Dr. Fung Lim — guest

Chapters

0:00Anatomic Definitions and Differences — Introduction to gastroschisis and omphalocele, defining gastroschisis as a full-thickness defect lateral to the umbilicus without membrane and omphalocele as a midline defect with membrane coverage and associated anomalies.
1:54Prenatal Diagnosis and Surveillance — Discussion of prenatal screening with alpha-fetoprotein and ultrasound, imaging protocols including MRI and echocardiogram for omphalocele, and surveillance for growth restriction and fetal demise.
3:27Epidemiology and Risk Factors — Gastroschisis epidemiology including incidence of 1 in 2200 live births, maternal risk factors, and medication associations. Omphalocele risk factors including advanced maternal age and chromosomal abnormalities.
5:02Postnatal Management and Closure Techniques — Immediate postnatal care priorities, closure options including primary, staged, and sutureless approaches, management of complications like bowel atresia, and Cincinnati Children's specific techniques including Duoderm silo for omphalocele.

Key claims

0:55Gastroschisis is a full thickness abdominal wall defect just to the right of the umbilicus, in which peritoneal contents, most often intestines, protrude through the abdomen without any membranous cover — Dr. Fung Lim
0:55Omphalocele is right through the middle of the umbilicus and has a membranous cover — Dr. Fung Lim
0:55Omphalocele is a congenital disorder and can have associated anomalies, but gastroschisis occurs in otherwise normal babies that have an intrauterine event during development — Dr. Fung Lim
1:54Very high level of alpha fetal protein is associated with gastroschisis or omphalocele — Dr. Fung Lim
1:54Ultrasound imaging is needed to definitively diagnose abdominal wall defects — Dr. Fung Lim
2:12For omphalocele, besides ultrasound, MRI and echocardiogram are routinely obtained because patients may have other associated anomalies — Todd Ponski
2:12Fetal growth is tracked monthly in these cases because there is concern for significant growth restriction — Todd Ponski
2:51In utero growth restriction as well as in utero fetal demise can occur in these patients — Dr. Fung Lim
3:15Gastroschisis affects approximately one in every 2200 live births — Todd Ponski
3:27Gastroschisis is most common among babies born to young mother of low gravity and usually first pregnancy, with 75% being first born — Dr. Fung Lim
3:27Nearly 60% of gastroschisis cases are premature — Dr. Fung Lim
3:27More than 90% of gastroschisis infants are born less than 2500 grams in weight — Dr. Fung Lim
3:27Pseudoephedrine has an odds ratio of 4.2 times for gastroschisis compared to aspirin alone at 2.7 — Dr. Fung Lim
4:21For omphalocele, mothers are usually advanced in their age compared to the gastroschisis group, with advanced maternal age having an odds ratio of 3.3 — Dr. Fung Lim
4:21The major risk factors for omphalocele are trisomy 13, 18, and 21, which occur in anywhere between 35 and 90% of patients with omphalocele — Dr. Fung Lim
5:02Minimizing heat loss and fluid loss are crucial immediately after birth, otherwise babies can show up extremely dehydrated and cold — Dr. Fung Lim
5:02These babies can have significant acidosis and pulmonary hypertension — Dr. Fung Lim
5:32Primary closure is considered if bowel looks pristine, non-thickened, non-inflammatory, with only small amount on the outside and enough abdominal domain — Dr. Fung Lim
6:03Staged closure is favored if the defect is large or there's issue with the bowel, including atresia, compromised bowel, or perforation — Dr. Fung Lim
6:03Some patients develop intestinal perforation after only two to four days of enteral feeding — Dr. Fung Lim
6:46Majority of babies at Cincinnati Children's in the last four and a half years are managed using sutureless closure — Dr. Fung Lim
6:46In sutureless closure, after pushing bowel back in, umbilical cord is put over with dressing, and skin will grow over, with small umbilical defects closing spontaneously over time — Dr. Fung Lim
7:54For omphalocele without significant respiratory issues, sequential reduction using meshes is the best option — Dr. Fung Lim
7:54At Cincinnati Children's, Duoderm silo is placed on top of the skin and sequentially clipped down with plastic clips until flush to abdominal skin — Dr. Fung Lim

Cases discussed

7:54Omphalocele case managed with Duoderm silo technique

Open questions

In cases of small bowel atresia with gastroschisis, what is the optimal approach for managing the dilated portion of bowel - tapering versus resection before tapering

This episode was analyzed and enriched by Kai, the Library's AI content creator. Every item links to the moment it comes from — click a timestamp to listen in context.

Abdominal Wall Defects: From Prenatal Diagnosis Through Closure Strategy

The episode's teaching points arranged as a structured lesson, building from the basics up to the finer points. Written by Kai from the episode transcript and reviewed before publishing.

For trainees · Teaching arc · AI-written, human-reviewed

Anatomy Determines Everything Downstream

Gastroschisis and omphalocele look similar to the untrained eye — both are abdominal wall defects with bowel outside the body — but they are fundamentally different conditions requiring different management. Gastroschisis is "a full thickness abdominal wall defect just to the right of the umbilicus, in which peritoneal contents, most often intestines, protrude through the abdomen without any membranous cover" 0:55. Omphalocele sits at the umbilicus and has a membranous cover 0:55. The deeper distinction: omphalocele is a congenital disorder that can have associated anomalies, while gastroschisis occurs as an intrauterine event in otherwise normal babies 0:55. This single fact explains why omphalocele patients get MRI and echocardiogram while gastroschisis patients do not 2:12 — you are screening for syndromic associations in one and managing an isolated defect in the other.

Prenatal Surveillance Exists Because Bad Outcomes Happen

Fetal growth is tracked monthly in these pregnancies because intrauterine growth restriction and fetal demise can occur 2:51. More than 90% of gastroschisis infants are born weighing less than 2500 grams 3:27, and nearly 60% are premature 3:27. These are not theoretical risks — they drive the decision to admit for continuous monitoring or deliver emergently when surveillance imaging becomes worrisome. The biophysical profile and non-stress testing protocols exist to catch deterioration before it becomes irreversible.

Immediate Postnatal Care Prevents the Preventable

The first minutes after delivery set the trajectory. Minimizing heat loss and fluid loss is the priority to prevent severe dehydration and hypothermia 5:02. These babies arrive with exposed bowel and massive evaporative losses. Without aggressive fluid resuscitation and temperature management, significant acidosis and pulmonary hypertension can develop 5:02. You cannot operate safely on a cold, acidotic infant with pulmonary hypertension — the physiology must be corrected first.

Closure Strategy Follows Bowel Quality and Defect Size

Primary closure is appropriate when the bowel appears pristine and non-thickened, the amount of bowel outside is small, and there is adequate abdominal domain 5:32. The judgment is visual and tactile: does the bowel look normal, is there room in the abdomen, can you close without tension? If any of those answers is no, staged closure is safer 6:03. The risk of forcing primary closure is real — intestinal perforation can develop within days of starting enteral feeding 6:03, presumably from unrecognized ischemia or excessive abdominal pressure.

Sutureless Closure Exploits Biology

The majority of gastroschisis cases at Cincinnati Children's are now managed with sutureless closure 6:46. The technique is elegant: reduce the bowel, place the umbilical cord over the defect, apply dressing, and allow the skin to grow over the defect with spontaneous closure over time 6:46. This avoids an operation, avoids suture line complications, and produces acceptable cosmetic results. It works because the defect is small and the bowel is healthy — conditions that must both be met.

Omphalocele Closure Respects the Membrane

For omphalocele without respiratory compromise, sequential reduction using mesh is preferred 7:54. The key technical point: "you will sew the meshes to the edges of the fascia without actually interrupting the membrane." At Cincinnati, a Duoderm silo is placed on top of the skin and sequentially reduced using plastic clips until the defect is flush with the abdominal skin 7:54. The membrane protects the bowel from the inflammatory response that exposed bowel would trigger. Preserve it until final closure.

The through-line in all of this: match your intervention to the anatomy and physiology in front of you. Gastroschisis and omphalocele are not variations of the same problem — they are different problems that happen to involve the abdominal wall.

Takeaways from this story

Omphalocele requires syndromic workup (MRI, echo) because it's congenital; gastroschisis does not because it's an intrauterine event in normal babies.
Over 90% of gastroschisis infants weigh under 2500g at birth; aggressive prenatal surveillance exists to prevent intrauterine fetal demise.
Primary closure requires pristine bowel, small defect, and adequate abdominal domain — forcing it risks perforation within days of feeding.
Sutureless closure for gastroschisis allows skin to grow over the defect spontaneously, avoiding operative complications in appropriate cases.
For omphalocele, preserve the membrane during staged reduction — sew mesh to fascia edges without disrupting the protective cover.

Keywords

gastroschisis omphalocele intrauterine growth restriction in utero fetal demise acidosis pulmonary hypertension bowel atresia intestinal perforation trisomy 13 trisomy 18 trisomy 21 vitamin B deficiencies ultrasound MRI echocardiogram

Transcript

Babies born with abdominal wall defects like omphalocele and gastroschisis can often have potentially complex postnatal care, which is why today we're going to discuss some key knowledge points with Dr. Fung Lim, who's a pediatric surgeon at Cincinnati Children's Hospital and the surgical director of the Fetal Care Center. I'm Todd Ponski, and this is the Stay Current in Pediatric Surgery podcast. All right, so let's start out with a textbook image of gastroschisis. If you're listening to the audio version of this podcast, scroll down under the media player in the Stay Current app, and we'll give you the link to this and every other image that Dr. Lim will be discussing. So this is a full thickness defect in the abdominal wall that allows, as you can see here, the bowel to protrude. So you can see the umbilical cord right next to it, and that's the bowel coming through the hole. So gastroschisis is a full thickness abdominal wall defect just to the right of the umbilicus, in which peritoneal contents, most often intestines, protrude through the abdomen without any membranous cover. And on phalocele, it's right through the middle of the umbilicus, and it has a membranous cover. But the main difference between gastroschisis and umphalocele is that umphalocele is a congenital disorder and can have associated anomalies, but gastroschisis occurs in otherwise normal babies that have an intrauterine event during development. Let's compare this image to the next one, which shows umphalocele. The obvious difference is the membrane covering the herniated contents, but another difference, and majority of the times, uh, for large defects, you'll have, besides intestine, uh, a good amount of the liver is on the outside. So prenatal diagnosis is an important factor in identifying these conditions, but are the warning signs we should be looking for obvious? If you see a very high level of alpha fetal protein, think about um, gastroschisis or umphalocele. The alpha fetal protein or AFP is a great screening test, but you need ultrasound imaging to definitively diagnose these abdominal wall defects. Uh, for gastroschisis, uh, we normally only get ultrasound, confirm the diagnosis and don't get additional imaging. However, for umphalocele, uh, besides the ultrasound, we also routinely get MRI and echocardiogram. Because these patients may also have other associated anomalies. Now, luckily, once we get the imaging, we can then follow a protocol to follow it up. As you can see here, we track their fetal growth monthly because there is a concern for significant growth restriction. You also need to follow them, uh, using biophysical profile and non-stress testing. Okay, wait, why do we need to do biophysical profile and non-stress testing? In utero growth restriction as well as IUFD in utero fetal demise, uh, can occur in this patient. So, if the surveillance imaging becomes worrisome enough that you're concerned about intrauterine fetal demise, the mother and the fetus need to be admitted for continuous monitoring or deliver the fetus emergently. Let's change gears and talk about epidemiology. Gastroschisis affects approximately one in every 2200 live births. But which babies are at highest risk for gastroschisis? It's, uh, most common among babies born to young mother of low gravity and usually first pregnancy. And 75% of that is the first born. So 25% is in the second or subsequent. Nearly 60% are premature. Unfortunately, intrauterine growth restriction is another big concern with more than 90% of these infants born less than 2500 grams in weight. There are other identified risk factors, including some common over-the-counter medications. It's actually as simple as pseudofed. Uh, pseudofed that contains, uh, pseudoephrin, uh, and acetaminophen. The, the odd ratio is actually 4.2 times compared to aspirin alone 2.7. And then there are other risk factors like vitamin B deficiencies, drug use, and some genetic predispositions. All right, now let's talk about the risk factors for omphalocele. Usually moms are advanced, um, in their age compared to, you know, the, the gastrosis group. And you can see that, uh, AMA, uh, the odd ratio is 3.3. You can see that the major risk factor for omphalocele are trisomy 13, 18, and 21, which occur in anywhere between 35 and 90% of patients with omphalocele. All right. So now that we're caught up on the prenatal diagnosis, anatomy, and epidemiology, let's go through a case. So we are outside of a tertiary pediatric center and we come across a congenital domino wall defect. What are the crucial procedures that we have to take immediately after birth? Minimizing heat loss and fluid loss in these babies. Otherwise they can show up, uh, extremely dehydrated as well as, um, being cold. These babies can have a significant acidosis and pulmonary hypertension. The severity of either of these diagnoses at birth can range widely, which is why it's key to take these initial non-operative steps before moving onto the closure. So closing these abdominal wall defects can be performed as either a primary closure or a stage closure. Dr. Lim, in which patients do you consider primary closure? If you have a bowel that look pretty pristine, non-thickened, non-inflammatory, and only small amount of them being on the outside, and that's enough abdominal domain, you can actually push them all back very quickly and perform primary closure. Okay. So if the bowel appears pristine, we could potentially do a primary closure. In fact, these bottom two images show how small the abdominal wall defects look over time following primary closure. Dr. Lim, in which patients are not being able to prevent the bowel from the bowel. But what about stage closure? Dr. Lim, we favor stage closure if the defect is large or there's issue with the bowel. So some of these patients unfortunately can have atresia, can have bowel being compromised, or also perforation. We definitely have patients that after only two days to four days of enteral feeding that they develop intestinal perforation. Okay, so if the bowel looks perfect, you could consider primary closure. If the defect is too large, consider a staged approach. But how are things done at Cincinnati Children's Hospital? Majority of our babies in the last four and a half years are now being managed using a sutureless closure. Dr. Lim, walk us through how the Cincinnati Children's Team performs a sutureless closure. Dr. Lim, walk us through how the bowel is in the middle of the bowel. After you push the bowel back in, you don't take these babies to the operating room to close that with suture, but rather put the umbilical cord over and then the dressing over. And a lot of times skin will grow over. Although they may still have a small umbilical defect, over time, the umbilical defect can close spontaneously. Dr. Lim, walk us through the bowel. Wow, so that was really helpful. But now let's talk about another challenging scenario. What do you do if you encounter a small bowel atresia? So in this particular case, it's up to, you know, how you want to manage that dilated portion of the bowel. Some of us will taper that. Some of us will resect the bowel before tapering. So we have a primary closure, a staged closure, and a sutureless closure. But what if we have a baby with omphalocele and no significant respiratory issues? What's the best option here? It's a sequential reduction using meshes. You can use different kinds of meshes to eventually push all of the content in. You will sew the meshes to the edges of the fascia without actually interrupting the membrane. You may have heard of the pitcher clamp procedure, and many of you may have even done it. But at Cincinnati Children's, they do it a little different. Duoderm silo can be done just on top of the skin of the patient, such as these. So we form, these are duoderm, and we can form over the emphalcia and then just use the plastic clip and sequentially clip it down until it's flashed to the abdominal skin. So they sequentially reduce the bowel with plastic clips until the baby is ready for that last step. And then take this patient, this is the same patient from the previous picture to the upper room and we finally did a primary closure, delayed primary closure of the fascia and skin. Thanks, Dr. Lim. The management of congenital abdominal wall defects can be complex. If you liked this episode, be sure to follow us on social media, subscribe to our YouTube channel and download the Stay Current in Pediatric Surgery app. It's in the Apple App Store and the Google Play Store. But until next time, remember knowledge should be free.

Comments

Loading comments…