Clinical risk factors for gastroschisis and omphalocele in humans: a review of the literature

Managing giant omphalocele: A systematic review of surgical techniques and outcomes

AIM

We analysed closure techniques in the treatment of giant omphalocele. A challenging pathology where there lacks consensus.

METHODS

Cochrane, MEDLINE and EMBASE were searched between 1 January 1992 and 31 December 2022 using terms and variations: omphalocele, exomphalos, giant, closure and outcome. Papers were selected using Preferred Reporting Items for Systematic review and Meta-Analyses 2020 criteria. Data collected included demographics, timing and technique of surgical repair, morbidity and mortality.

RESULTS

We identified 342 papers; 34 met inclusion criteria with a total 356 neonates. Initial non-operative management was described in 26 papers (14 dressings, eight silo, four serial sac-ligation). Operative techniques by paper were as follows: Early closure: nine primary suture closure without patch, two primary closure with patch and four mixed methods. Delayed closure: five simple, four-component separation technique, four tissue expanders, one Botox/pneumoperitoneum and two with patch. Median number of procedures was two (1-6) in the early group versus three (1-4) in the delayed. The most favourable was early primary closure with biological patch. The most unfavourable was delayed closure with patch. Cumulative reported mortality remained high, mostly due to non-surgical causes.

CONCLUSION

Definitions of giant omphalocele in the literature were heterogeneous with a variety of management approaches described.

Ruptured giant omphalocele with congenital short small intestine: a case report

We herein present a case of a ruptured giant omphalocele with congenital short small intestine. Vacuum-sealing drainage and carboxymethylcellulose silver dressing promoted wound healing after repair, avoided abdominal compartment syndrome, and reduced the risks of multiple procedures. We review the perioperative management of omphaloceles in congenital short small intestines.

Anatomic parameters of omphaloceles and their association with anatomic, genetic, or syndromic malformations: a retrospective study

PURPOSE

This retrospective study aims to describe anatomical parameters of omphaloceles and to analyze their association with anatomical, genetic, or syndromic malformations.

METHODS

Cases were selected from digital records of two university centers, a certified regional registry and personal records. Patients from 1998 to 2018 with omphalocele and live birth (LB), termination of pregnancy due to fetal anomaly (TOPFA) and fetal death (FD) were included. Cases born outside Western Switzerland and/or with upper or lower coelosomy were excluded.

RESULTS

We analyzed 162 cases with the following distribution: 57 (35%) LB, 91 (56%) TOPFA and 14 (9%) FD. TOPFA was significantly more frequently performed in cases with non-isolated omphalocele, i.e., omphaloceles with associated major malformations (especially cardiovascular and genitourinary), genetic/chromosomal anomalies, or syndromes. For LB, associated anatomical malformations, genetic or chromosomal anomalies were not significantly associated with the size of the omphalocele or the liver involvement.

CONCLUSIONS

The proportion of cases resulting in TOPFA was higher among fetuses with major malformations, genetic or chromosomal anomalies. Despite the large size of this cohort, and in contrary to previous publications, the size of the omphalocele and/or liver involvement does not allow for conclusions regarding the presence or number of associated malformations, genetic or chromosomal anomalies.

Surgical Management of Omphalocele With Concurrent Ileal Atresia: A Case Report

Omphalocele, a congenital anomaly characterized by the protrusion of abdominal viscera through the umbilical ring, often presents challenges in surgical management, especially when concurrent with other anomalies such as intestinal atresia. We presented a case of a female infant weighing 2.6 kg born with omphalocele and concurrent ileal atresia. The child was successfully managed through prompt surgical intervention. Preoperative investigations revealed signs suggestive of intestinal obstruction, necessitating immediate surgical exploration. Intraoperatively, meticulous reduction of the omphalocele sac and resection of the atretic segment were performed. Postoperative care in the neonatal intensive care unit ensured optimal recovery. This case underscored the importance of timely intervention and multidisciplinary collaboration in managing complex congenital anomalies in neonates.

Updated EUROCAT guidelines for classification of cases with congenital anomalies

BACKGROUND

Precise and correct classification of congenital anomalies is important in epidemiological studies, not only to classify according to etiology but also to group similar congenital anomalies together, to create homogeneous subgroups for surveillance and research. This paper presents the updated EUROCAT (European surveillance of congenital anomalies) subgroups of congenital anomalies and the updated multiple congenital anomaly (MCA) algorithm and provides the underlying arguments for the revisions.

METHODS

The EUROCAT methodology is described. In addition, we show how we validated the revised EUROCAT subgroups and MCA algorithm, which are both based on the International Classification of Diseases (ICD10/ICD9) codes.

RESULTS

The updated EUROCAT subgroups and the updated MCA algorithm are described in detail and the updated version is compared to the previous versions.

CONCLUSION

The EUROCAT subgroups and MCA algorithm provide a standardized and clear methodology for congenital anomaly research and epidemiological surveillance of congenital anomalies in order to facilitate the identification of teratogenic exposures and to assess the impact of primary prevention and prenatal screening policies. The EUROCAT subgroups and MCA algorithm are made freely available for other researchers via the EUROCAT Database Management Software.

Medication use during pregnancy and the risk of gastroschisis: a systematic review and meta-analysis of observational studies

OBJECTIVES

The aetiology of gastroschisis is considered multifactorial. We conducted a systematic review and meta-analysis to assess whether the use of medications during pregnancy, is associated with the risk of gastroschisis in offspring.

METHODS

PubMed, EMBASE, and Scopus were searched from 1st January 1990 to 31st December 2020 to identify observational studies examining the association between medication use during pregnancy and the risk of gastroschisis. The Newcastle-Ottawa Scale was used for the quality assessment of the individual studies. We pooled adjusted measures using a random-effect model to estimate relative risk [RR] and the 95% confidence interval [CI]. I2 statistic for heterogeneity and publication bias was calculated.

RESULTS

Eighteen studies providing data on 751,954 pregnancies were included in the meta-analysis. Pooled RRs showed significant associations between aspirin (RR 1.66, 95% CI 1.16-2.38; I2 = 58.3%), oral contraceptives (RR 1.52, 95% CI 1.21-1.92; I2 = 22.0%), pseudoephedrine and phenylpropanolamine (RR 1.51, 95% CI 1.16-1.97; I2 = 33.2%), ibuprofen (RR 1.42, 95% CI 1.26-1.60; I2 = 0.0%), and gastroschisis. No association was observed between paracetamol and gastroschisis (RR 1.16, 95% CI 0.96-1.41; I2 = 39.4%).

CONCLUSIONS

These results suggest that the exposure in the first trimester of pregnancy to over the counter medications (OTC) such as aspirin, ibuprofen, pseudoephedrine and phenylpropanolamine as well as to oral contraceptives, was associated with an increased risk of gastroschisis. However, these associations are significant only in particular subgroups defined by geographic location, adjustment variables and type of control. Therefore, further research is needed to investigate them as potential risk factors for gastroschisis, to assess their safety in pregnancy and to develop treatment strategies to reduce the risk of gastroschisis in offspring. PROSPERO registration number: CRD42021287529.

Enhancing Omphalocele Care: Navigating Complications and Innovative Treatment Approaches

Congenital abdominal wall abnormalities in infants present an interesting and difficult management problem for surgeons. Congenital malformations of the ventral abdominal wall can be diagnosed by their distinctive anatomical presentations. Among them, omphalocele, gastroschisis and umbilical cord hernias are the most frequently observed clinically detected abdominal wall anomalies. Omphalocele refers to the herniation of abdominal contents through a defect in the abdominal wall at the umbilicus with or without the presence of a sac. This article gives an insight into the embryology, risk factors, treatment, investigations and complications of omphalocele, a common congenital abdominal wall defect. There is minimal proof that environmental factors contribute to the development of omphalocele. However, there is a considerable amount of evidence which points to the importance of genetic or familial risk factors. Newborns and infants with prenatal diagnoses are the most frequently presenting patients with omphalocele to paediatric surgeons. This article describes the problems and the steps of management for handling each circumstance, as well as any further complications. Omphalocele and gastroschisis are frequently described together in many research papers. However, it's crucial to consider that they are two different conditions which vary in anatomy, pathology and associated conditions which account for the difference in their treatments and noticeably varied outcomes. Additionally, there is evidence that each has a different set of factors associated with risk for occurrence. There are no known etiologic causes that cause these abnormalities to develop. The size of the baby, the extent of the lesion, and any other disorders all affect how individuals with these congenital abdominal wall anomalies are treated.

Trends in prevalence of gastroschisis in Brazil from 2007 to 2020: A national population-based cross-sectional study

BACKGROUND

Gastroschisis is a congenital abnormality of the abdominal wall which worldwide prevalence is increasing with time. Up to now, young maternal age is the main factor associated with gastroschisis. Brazil has a great proportion of adolescent mothers.

OBJECTIVES

To estimate prevalence of gastroschisis in Brazil, explore the effect of very young maternal age, and analyze regional distribution and time trends.

METHODS

Cross-sectional population-based study using data from official national information systems from 2007 to 2020, covering 9,831 gastroschisis cases. Low maternal age was assessed as risk factor through odds ratio. Prevalence time trends by maternal age and geographic area were analyzed using joinpoint regression.

RESULTS

Overall prevalence of gastroschisis in Brazil was 2.47 per 10,000 births. From first to last biennium, there was a 23% relative increase. Last biennium prevalence was higher in the Central-west region and lower in the Northeast. Compared to mothers of 20-34 years old (YO), the odds-ratio for prevalence and 95% confidence intervals for gastroschisis were, as follows: (a) 10-14 YO-4.9 (4.3,5.5); (b) 15-19 YO-3.6 (3.5,3.8); and (c) 35-49 YO-0.3 (95% CI 0.3, 0.4).

CONCLUSIONS

Prevalence of gastroschisis in Brazil relatively increased 23% from 2007 to 2020. This happened in all maternal age groups. Differences between regions may be associated to data quality. Young mothers had a higher prevalence of gastroschisis and still higher for those under 15 YO. Mother age over 34 YO was a protective factor.

Pregnancy outcomes and prenatal traditional karyotype analysis with fetal omphalocele

BACKGROUND

Omphalocele is associated with many aneuploidies, deletions and congenital anomalies. This study evaluates pregnancies diagnosed with omphalocele and its relevance to concomitant genetic disorders.

METHODS

The data of patients with the intrauterine diagnosis of omphalocele who had invasive diagnostic testing performed between January 2017 and January 2020 were evaluated retrospectively. The traditional karyotype analysis was performed to prenatal diagnosis for all fetuses. During the study period, all patients were scanned via ultrasonography by an experienced perinatologist, prenatally.

RESULTS

We evaluated 22 cases of omphalocele whose genetic testing results were available. The mean maternal age was 25 (18-41) years. The median gestational week at diagnosis was 13 (11-22). Invasive genetic testing revealed aneuploidy in 7 patients (31.8%), 2 with trisomy 13 (9.1%), and 5 with trisomy 18 (22.8%). There were 5 fetuses (22.7%) that had extracorporeal liver: 1 had trisomy 18 (20%), 1 had trisomy 13 (20%), and the other 3 fetuses had a normal karyotype (60%). Further, 14 (63.6%) pregnancies were terminated: 4 had trisomy 18 (28.6%), 1 had trisomy 13 (7.1%), and 9 of the terminated pregnancies (64.3%) had additional congenital anomalies. There were 4 infants who died (50%) born from 8 patients who decided to continue with their pregnancy. The omphalocele sac of 1 infant spontaneously regressed in the ensuing weeks of pregnancy who is now 1 year old.

CONCLUSIONS

The chromosomal abnormalities presented in up to 31.8% of cases diagnosed with omphalocele. Moreover, for cases with normal genetic testing results, the propensity for additional structural defects was high and the prognosis remains poor. Counseling parents to consider their option of terminating the pregnancy is appropriate.

Birth prevalence of omphalocele and gastroschisis in Sub-Saharan Africa: A systematic review and meta-analysis

Objective:

To systematically summarize the burden of gastroschisis and omphalocele in Sub-Saharan Africa.

Methods:

Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, systematically reviewed and meta-analyzed literatures from Medline (PubMed), Cochrane Library, HINARI, and Google Scholar that investigated at the prevalence of major congenital abdominal wall malformation. The pooled prevalence of major abdominal wall defects was estimated using a weighted inverse variance random-effects model. The Q statistic and the I² statistics were used to examine for heterogeneity among the included studies. The funnel plot and Egger’s regression test were used to check for publication bias.

Results:

A total of 1951 studies were identified; 897 from PubMed, 26 from Cochrane Library, 960 from Google Scholar, and 68 from other sources. Fourteen articles that met the eligibility criteria were selected for this meta-analysis with 242,462 total enrolled participants and 4693 births with congenital anomaly. The pooled prevalence of ompahalocele among congenital defect patients in Sub-Saharan Africa was found to be 4.47% (95% confidence interval: 3.04–5.90; I² = 88.3%; p < 0.001). The pooled prevalence of omphalocele among births with congenital defect was found to be 4.04% (95% confidence interval: 2.62–5.46) in cross-sectional studies and 4.43% (95% confidence interval: 306–5.81) in cohort studies. The average prevalence of omphalocele among births with congenital defect was found to be 8% (95% confidence interval: 5.53–10.47) in Uganda and 6.65% (95% confidence interval: 4.18–9.13) in Nigeria. The pooled prevalence of gastroschisis among congenital birth defect in Sub-Saharan Africa was found to be 3.22% (95% confidence interval: 1.83–4.61; I² = 33.1%; p = 0.175).

Conclusion:

Based on this review, the pooled prevalence of omphalocele and gastroschisis in sub-Saharan Africa are high. Therefore, a perinatal screening program for congenital anomalies should be implemented. In addition, early referral of suspected cases of congenital anomalies is required for better management until advanced diagnostic centers are established in various locations of Sub-Saharan Africa.

Current Challenges in the Treatment of the Omphalocele—Experience of a Tertiary Center from Romania

Omphalocele is a congenital abdominal wall defect with a constant incidence in recent decades, sometimes representing a real burden for neonatal intensive care units due to prolonged hospitalization and the evolution to death. In our study, we aimed to detect the main risk factors of an unfavorable evolution in the case of omphalocele. Methods: Retrospective cohort study of all neonates with omphalocele treated in our tertiary pediatric hospital during the last three decades; from 158 patients, 139 patients were eligible for the study. We tried to determine the risk of death using logistic regression model. Results: If the neonate develops sepsis, then there is an increased risk (13.03 times) of evolution to death. Similarly, the risk of death is 10.82 times higher in the case of developing acute renal failure, 6.28 times higher in the case of associated abnormalities, 5.54 in the case of developing hemorrhagic disease, and 3.78 in the case of conservative treatment (applied for giant omphalocele or severe chromosomal abnormalities). Prematurity increases by 3.62 times the risk of death. All six independent variables contributed 61.0% to the risk of death. The area under the ROC curve is 0.91, meaning that the diagnostic accuracy of our logistic regression model is very good for predicting the contribution of the six independent variables to the risk of death. Conclusion: Although in the past 30 years we witnessed several improvements in the antenatal diagnosis and management of omphalocele, survival rate remained constant, 47.5% overall. Much effort is still needed to eliminate the risk factors for death in this condition.

Short and Medium-term Outcomes of Omphalocele and Gastroschisis: A Survey from a Tertiary Center

OBJECTIVE

 To characterize and compare the outcomes of omphalocele and gastroschisis from birth to 2 years of follow-up in a recent cohort at a tertiary center.

METHODS

 This is a retrospective clinical record review of all patients with gastroschisis and omphalocele admitted to the Neonatal Intensive Care Unit between January 2009 and December 2019.

RESULTS

 There were 38 patients, 13 of whom had omphalocele, and 25 of whom had gastroschisis. Associated anomalies were present in 6 patients (46.2%) with omphalocele and in 10 (41.7%) patients with gastroschisis. Compared with patients with omphalocele, those with gastroschisis had younger mothers (24.7 versus 29.6 years; p = 0.033), were born earlier (36 versus 37 weeks, p = 0.006), had lower birth weight (2365 ± 430.4 versus 2944.2 ± 571.9 g; p = 0.001), and had a longer hospital stay (24 versus 9 days, p = 0.001). The neonatal survival rate was 92.3% for omphalocele and 91.7% for gastroschisis. Thirty-four patients were followed-up over a median of 24 months; 13 patients with gastroschisis (59.1%) and 8 patients with omphalocele (66.7%) had at least one adverse event, mainly umbilical hernia (27.3% vs 41.7%), intestinal obstruction (31.8% vs 8.3%), or additional surgical interventions (27.3% vs 33.3%).

CONCLUSION

 Despite the high proportion of prematurity, low birth weight, and protracted recovery, gastroschisis and omphalocele (without chromosomal abnormalities) may achieve very high survival rates; on the other hand, complications may develop in the first years of life. Thus, a very positive perspective in terms of survival should be transmitted to future parents, but they should also be informed that substantial morbidity may occur in the medium term.

The association between wildfire exposure in pregnancy and foetal gastroschisis: A population-based cohort study

BACKGROUND

Global climate change has led to an increase in the prevalence and severity of wildfires. Pollutants released into air, soil and groundwater from wildfires may impact embryo development leading to gastroschisis.

OBJECTIVE

The objective of this study was to determine the association between wildfire exposure before and during pregnancy and the risk of foetal gastroschisis development.

METHODS

This was a retrospective cohort study using The California Office of Statewide Health Planning and Development Linked Birth File linked to The California Department of Forestry and Fire Protection data between 2007 and 2010. Pregnancies complicated by foetal gastroschisis were identified by neonatal hospital discharge ICD-9 code. Pregnancies were considered exposed to wildfire if the mother's primary residence zip code was within 15 miles to the closest edge of a wildfire. The exposure was further stratified by trimester or if exposed within 30 days prior to pregnancy. Multivariable log-binomial regression analyses were performed to estimate the association between wildfire exposure in each pregnancy epoch and foetal gastroschisis.

RESULTS

Between 2007 and 2010, 844,348 (40%) births were exposed to wildfire in California. Compared with births without wildfire exposure, those with first-trimester exposure were associated with higher rates of gastroschisis, 7.8 vs. 5.7 per 10,000 births (adjusted relative risk [aRR] 1.28, 95% confidence interval [CI] 1.07, 1.54). Furthermore, those with prepregnancy wildfire exposure were also found to have higher rates of gastroschisis, 12.5 vs. 5.7 per 10,000 births, (aRR 2.17, 95% CI 1.42, 3.52). In contrast, second- and third-trimester wildfire exposures were not associated with foetal gastroschisis.

CONCLUSIONS

Wildfire exposure within 30 days before pregnancy was associated with more than two times higher risk of foetal gastroschisis, whereas a 28% higher risk was demonstrated if exposure was in the first trimester.

Extended spectrum penicillins reduce the risk of omphalocele: A population-based case-control study

BACKGROUND

Omphalocele is a major congenital anomaly associated with significant morbidity and mortality. Regardless, the influence of maternal use of prescription drugs on the risk of omphalocele has only been addressed in a handful of studies. The aim of this study was to assess the influence of maternal risk factors and prescription drugs in early pregnancy on the risk of omphalocele.

METHODS

We performed a nationwide register-based case-control study in Finland. The analysis is based on the Finnish Register of Congenital Malformations and Drugs and Pregnancy databases, both upheld by the Finnish Institute for Health and Welfare. All omphalocele cases were identified between Jan 1, 2004, and Dec 31, 2014. Five age-matched controls from the same geographical region were randomly selected for each case. The main outcome measures were maternal risk factors for omphalocele. Our analysis compared the maternal characteristics and the use of prescription drugs during the first trimester of pregnancy between case and control mothers.

RESULTS

Mothers of 359 omphalocele cases were compared with 1738 randomly selected age and area-matched mothers of healthy infants between 1 January 2014 and 31 December 2014. Both maternal obesity (BMI ≥30) and diabetes increased the risk for omphalocele, and their co-occurrence accumulated this risk (aOR 5.06, 95% Cl 1.19-21.4). Similarly, history of multiple miscarriages was an independent risk factor (2.51, 1.16-5.43). The oral use of extended spectrum penicillins during the first trimester of pregnancy had a significant, protective influence (0.17, 0.04-0.71). These analyses were adjusted for sex, parity, and risk factors reported above. No significant changes in risk were observed with any other medication used during the first trimester.

CONCLUSION

In conclusion, these findings may suggest that extended spectrum penicillins in the first trimester reduces the risk of omphalocle formation. Additionally, consistent with earlier studies, previous repeated miscarriages, maternal obesity, and diabetes were significant risk factors for omphalocele.

Perforated Meckel's diverticulum in omphalocele in a newborn: A case report of an uncommon presentation from northern Tanzania

Introduction and importance

The concurrent existence of Omphalocele and Meckel's diverticulum is not unheard of but is relatively uncommon. A few cases of their coexistence have been reported. Due to the uncommon dual presentation, it is easy to delay or even miss the diagnosis, delaying management. Meckel's diverticulum should be considered if there is a bowel opening on an omphalocele.

Case presentation

Herein we present a newborn male baby who was referred to us presenting with an omphalocele that was leaking faeces. The baby also had a cleft lip and palate. He was born at term to a 30-year-old mother whose pregnancy was otherwise normal. The fistulated omphalocele was surgically repaired, and the child continued to do well.

Clinical discussion

Omphalocele and Meckel's diverticulum are both relatively rare congenital malformations that are uncommonly present together. Other congenital malformations can be associated; hence thorough investigations should be carried out when resources are available. The search for associated malformation should not delay the management of the pathology as it can have serious consequences on the health and outcome of the child.

Conclusion

Fistulation of Meckel's diverticulum on an Omphalocele is rare. Treatment involves surgical resection and repair. Though other co-morbidities should be investigated, investigation for cause and other co-morbidities should not delay surgery.

•

Omphalocele and Meckel's diverticulum rarely occur concurrently.

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Surgery is the mainstay of management of both malformations.

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Co-morbidities need to be addressed but not necessarily in the same sitting.

Comparative analysis of perinatal outcomes and birth defects amongst adolescent and older Ugandan mothers: evidence from a hospital-based surveillance database

Background

Uganda has one of the highest adolescent pregnancy rates in sub-Saharan Africa. We compared the risk of adverse birth outcomes between adolescents (age 12–19 years) and mothers (age 20–34 years) in four urban hospitals.

Methods

Maternal demographics, HIV status, and birth outcomes of all live births, stillbirths, and spontaneous abortions delivered from August 2015 to December 2018 were extracted from a hospital-based birth defects surveillance database. Differences in the distributions of maternal and infant characteristics by maternal age groups were tested with Pearson’s chi-square. Adjusted odds ratios (aORs) and 95% confidence intervals (CI) were calculated using logistic regression to compare the prevalence of adverse birth outcomes among adolescents to mothers 20–34 years.

Results

A total of 100,189 births were analyzed, with 11.1% among adolescent mothers and 89.0% among older mothers. Adolescent mothers had an increased risk of preterm delivery (aOR: 1.14; CI 1.06–1.23), low birth weight (aOR: 1.46; CI 1.34–1.59), and early neonatal deaths (aOR: 1.58; CI 1.23–2.02). Newborns of adolescent mothers had an increased risk of major external birth defects (aOR: 1.33; CI 1.02–1.76), specifically, gastroschisis (aOR: 3.20; CI 1.12–9.13) compared to mothers 20–34 years. The difference between the prevalence of gastroschisis among adolescent mothers (7.3 per 10,000 births; 95% CI 3.7–14.3) was statistically significant when compared to mothers 20–34 years (1.6 per 10,000 births; 95% CI 0.9–2.6).

Conclusions

This study found that adolescent mothers had an increased risk for several adverse birth outcomes compared to mothers 20–34 years, similar to findings in the region and globally. Interventions are needed to improve birth outcomes in this vulnerable population.

Adolescent pregnancies are a global problem occurring in high-, middle-, and low-income countries with Uganda having one of the highest adolescent pregnancy rates in sub-Saharan Africa. We compared the risk of adverse birth outcomes, including major external birth defects, between adolescents, (age 12–19 years) and mothers (age 20–34 years) in four urban hospitals.

All informative births, including live births, stillbirths, and spontaneous abortions; regardless of gestational age, delivered at four selected hospitals in Kampala from August 2015 to December 2018 were examined. Demographic data were obtained by midwives through maternal interviews and review of hospital patient notes.

Of the 100,189 births, 11.0% were among adolescent mothers and 89.0% among mothers (20–34 years). Adolescent mothers were more likely than mothers (20–34 years) to have an infant with preterm delivery, low birth weight, early neonatal death, and major external birth defects. Adolescent pregnancies were also associated with an increased risk of gastroschisis when compared to mothers (20–34 years).

In conclusion, this study found that adolescent mothers had an increased risk for several adverse birth outcomes compared to mothers 20–34 years. Research on the potential underlying causes or mechanisms for these adverse outcomes among adolescent births is necessary to identify possible interventions.

Abdominal Wall Defects-Current Treatments

Gastroschisis and omphalocele reflect the two most common abdominal wall defects in newborns. First postnatal care consists of defect coverage, avoidance of fluid and heat loss, fluid administration and gastric decompression. Definitive treatment is achieved by defect reduction and abdominal wall closure. Different techniques and timings are used depending on type and size of defect, the abdominal domain and comorbidities of the child. The present review aims to provide an overview of current treatments.

Effect of paternal age on offspring birth defects: a systematic review and meta-analysis

OBJECTIVE

This systematic review and meta-analysis was aimed at determining whether paternal age is a risk factor for offspring birth defects.

RESULTS

A total of 38 and 11 studies were included in the systematic review and meta-analysis, respectively. Compared with reference, fathers aged 25 to 29, young fathers (< 20 years) could increase the risk of urogenital abnormalities (OR: 1.50, 95 % CI: 1.03-2.19) and chromosome disorders (OR: 1.38, 95 % CI: 1.12-1.52) in their offsprings; old fathers (≥ 40 years) could increase the risk of cardiovascular abnormalities (OR: 1.10, 95 % CI: 1.01-1.20), facial deformities (OR: 1.08, 95 % CI: 1.00-1.17), urogenital abnormalities (OR: 1.28, 95 % CI: 1.07-1.52), and chromosome disorders (OR: 1.30, 95 % CI: 1.12-1.52).

CONCLUSIONS

Our study indicated that paternal age is associated with a moderate increase in the incidence of urogenital and cardiovascular abnormalities, facial deformities, and chromosome disorders.

METHODS

PubMed, Web of Science, the Cochrane Library, and Embase were searched for relevant literatures from 1960 to February 2020. The systematic review follows PRISMA guidelines. Relevant meta-analyses were performed.

A multi-country study of prevalence and early childhood mortality among children with omphalocele

BACKGROUND

Omphalocele is the second most common abdominal birth defect and often occurs with other structural and genetic defects. The objective of this study was to determine omphalocele prevalence, time trends, and mortality during early childhood, by geographical region, and the presence of associated anomalies.

METHODS

We conducted a retrospective study with 23 birth defect surveillance systems in 18 countries who are members of the International Clearinghouse for Birth Defects Surveillance and Research that submitted data on cases ascertained from 2000 through 2012, approximately 16 million pregnancies were surveyed that resulted in live births, stillbirths, or elective terminations of pregnancy for fetal anomalies (ETOPFA) and cases with omphalocele were included. Overall prevalence and mortality rates for specific ages were calculated (day of birth, neonatal, infant, and early childhood). We used Kaplan-Meier estimates with 95% confidence intervals (CI) to calculate cumulative mortality and joinpoint regression for time trend analyses.

RESULTS

The prevalence of omphalocele was 2.6 per 10,000 births (95% CI: 2.5, 2.7) and showed no temporal change from 2000-2012 (average annual percent change = -0.19%, p = .52). The overall mortality rate was 32.1% (95% CI: 30.2, 34.0). Most deaths occurred during the neonatal period and among children with multiple anomalies or syndromic omphalocele. Prevalence and mortality varied by registry type (e.g., hospital- vs. population-based) and inclusion or exclusion of ETOPFA.

CONCLUSIONS

The prevalence of omphalocele showed no temporal change from 2000-2012. Approximately one-third of children with omphalocele did not survive early childhood with most deaths occurring in the neonatal period.

Prevalence rates study of selected isolated non-Mendelian congenital anomalies in the Hutterite population of Alberta, 1980-2016

A study of the prevalence rates for selected isolated non-Mendelian congenital anomalies in the Hutterite Brethren of Alberta, Canada was undertaken to further examine longitudinal data in this isolated community that was last reported in 1985 (Lowry et al., 1985), although there are numerous publications on recessive disorders (Boycott et al., 2008; Triggs-Raine et al., 2016). Cases were ascertained from the Alberta Congenital Anomaly Surveillance System for the years 1997-2016. Since our initial results showed some surprising findings in the Hutterite Brethren, such as zero cases of spina bifida, cleft lip and palate, gastroschisis, and omphalocele, and a significant excess of cases with hypospadias, we extended the study to prior years (1980-1996) for selected anomalies. For the extended study period (1980-2016), there was a significant increased prevalence of hypospadias, tetralogy of Fallot and tricuspid atresia in the Hutterite population, and although not statistically significant, zero cases of cleft lip with cleft palate, gastroschisis and omphalocele were confirmed. Further research is needed to determine the precise effects of rural environmental exposures, lifestyle factors, and genetic associations for selected multifactorial congenital anomalies.

Birth defects that co-occur with non-syndromic gastroschisis and omphalocele

Gastroschisis and omphalocele are the two most common abdominal wall birth defects, and epidemiologic characteristics and frequency of occurrence as part of a syndromic condition suggest distinct etiologies between the two defects. We assessed complex patterns of defect co-occurrence with these defects separately using the Texas Birth Defects Registry. We used co-occurring defect analysis (CODA) to compute adjusted observed-to-expected (O/E) ratios for all observed birth defect patterns. There were 2,998 non-syndromic (i.e., no documented syndrome diagnosis identified) cases with gastroschisis and 789 (26%) of these had additional co-occurring defects. There were 720 non-syndromic cases with omphalocele, and 404 (56%) had additional co-occurring defects. Among the top 30 adjusted O/E ratios for gastroschisis, most of the co-occurring defects were related to the gastrointestinal system, though cardiovascular and kidney anomalies were also present. Several of the top 30 combinations co-occurring with omphalocele appeared suggestive of OEIS (omphalocele, exstrophy of cloaca, imperforate anus, spinal defects) complex. After the exclusion of additional cases with features suggestive of OEIS in a post-hoc sensitivity analysis, the top combinations involving defects associated with OEIS (e.g., spina bifida) were no longer present. The remaining top combinations involving omphalocele included cardiovascular, gastrointestinal, and urogenital defects. In summary, we identified complex patterns of defects that co-occurred more frequently than expected with gastroschisis and omphalocele using a novel software platform. Better understanding differences in the patterns between gastroschisis and omphalocele could lead to additional etiologic insights.

Relationship between volume and outcome for gastroschisis: a systematic review protocol

BACKGROUND

Gastroschisis is a congenital anomaly that needs surgical management for repositioning intestines into the abdominal cavity and for abdominal closure. Higher hospital or surgeon volume has previously been found to be associated with better clinical outcomes for different especially high-risk, low volume procedures. Therefore, we aim to examine the relationship between hospital or surgeon volume and outcomes for gastroschisis.

METHODS

We will perform a systematic literature search from inception onwards in Medline, Embase, CENTRAL, CINAHL, and Biosis Previews without applying any limitations. In addition, we will search trial registries and relevant conference proceedings. We will include (cluster-) randomized controlled trials (RCTs) and prospective or retrospective cohort studies analyzing the relationship between hospital or surgeon volume and clinical outcomes. The primary outcomes will be survival and mortality. Secondary outcomes will be different measures of morbidity (e.g., severe gastrointestinal complications, gastrointestinal dysfunctions, and sepsis), quality of life, and length of stay. We will systematically assess risk of bias of included studies using RoB 2 for individually or cluster-randomized trials and ROBINS-I for cohort studies, and extract data on the study design, patient characteristics, case-mix adjustments, statistical methods, hospital and surgeon volume, and outcomes into standardized tables. Title and abstract screening, full text screening, critical appraisal, and data extraction of results will be conducted by two reviewers independently. Other data will be extracted by one reviewer and checked for accuracy by a second one. Any disagreements will be resolved by discussion. We will not pool results statistically as we expect included studies to be clinically and methodologically very diverse. We will conduct a systematic synthesis without meta-analysis and use GRADE for assessing the certainty of the evidence.

DISCUSSION

Given the lack of a comprehensive summary of findings on the relationship between hospital or surgeon volume and outcomes for gastroschisis, this systematic review will put things right. Results can be used to inform decision makers or clinicians and to adapt medical care.

SYSTEMATIC REVIEW REGISTRATION

Open Science Framework (DOI: https://doi.org/10.17605/OSF.IO/EX34M ; https://doi.org/10.17605/OSF.IO/HGPZ2 ).

Lifestyle and sociodemographic risk factors for gastroschisis: a systematic review and meta-analysis

BACKGROUND

Gastroschisis is strongly associated with young maternal age. This association suggests the need for further investigations on non-genetic risk factors. Identifying these risk factors is a public health priority in order to develop prevention strategies aimed at reducing the prevalence and health consequences in offspring.

OBJECTIVE

To systematically assess and quantitatively synthesise the available epidemiological studies to evaluate the association between non-genetic risk factors and gastroschisis.

METHODS

Literature from PubMed, EMBASE and Scopus was searched for the period 1990-2018. Epidemiological studies reporting risk estimates between lifestyle and sociodemographic risk factors and gastroschisis were included. Two pairs of reviewers independently extracted information on study characteristics following Preferred Reporting Items for Systematic Reviews and Meta-Analyses and MOOSE (Meta-analysis Of Oservational Studies in Epidemiology) guidelines. Relative risk (RR) estimates were calculated across the studies and meta-analysis was performed using random-effects model.

RESULTS

We identified 58 studies. Meta-analyses were conducted on 29 studies. Maternal smoking (RR 1.56, 95% CI 1.40 to 1.74), illicit drug use (RR 2.14, 95% CI 1.48 to 3.07) and alcohol consumption (RR 1.40, 95% CI 1.13 to 1.70) were associated with an increased risk of gastroschisis. A decreased risk among black mothers compared with non-Hispanic white mothers (RR 0.49, 95% CI 0.38 to 0.63) was found. For Hispanic mothers no association was observed.

CONCLUSIONS

Exposure to smoking, illicit drugs and alcohol during pregnancy is associated with an increased risk of gastroschisis. A significantly decreased risk for black mothers was observed. Further epidemiological studies to assess the potential role of other environmental factors are strongly recommended.

PROSPERO REGISTRATION NUMBER

CRD42018104284.

Decentralized surgery of abdominal wall defects in Germany

PURPOSE

Neonatal surgery for abdominal wall defects is not performed in a centralized manner in Germany. The aim of this study was to investigate whether treatment for abdominal wall defects in Germany is equally effective compared to international results despite the decentralized care.

METHODS

All newborn patients who were clients of the major statutory health insurance company in Germany between 2009 and 2013 and who had a diagnosis of gastroschisis or omphalocele were included. Mortality during the first year of life was analysed.

RESULTS

The 316 patients with gastroschisis were classified as simple (82%) or complex (18%) cases. The main associated anomalies in the 197 patients with omphalocele were trisomy 18/21 (8%), cardiac anomalies (32%) and anomalies of the urinary tract (10%). Overall mortality was 4% for gastroschisis and 16% for omphalocele. Significant factors for non-survival were birth weight below 1500 g for both groups, complex gastroschisis, volvulus and anomalies of the blood supply to the intestine in gastroschisis, and female gender, trisomy 18/21 and lung hypoplasia in omphalocele.

CONCLUSIONS

Despite the fact that paediatric surgical care is organized in a decentralized manner in Germany, the mortality rates for gastroschisis and omphalocele are equal to those reported in international data.

Gastroschisis Is Associated With Placental Delayed Villous Maturation

Gastroschisis is a congenital abnormality characterized by visceral herniation through an abdominal wall defect. While the cause of gastroschisis is unknown, it has been linked to risk factors including young maternal age, smoking, and alcohol use during pregnancy. To date, the only established placental correlate is amniocyte vacuolization. Based on our clinical experience, we hypothesized that delayed villous maturation (DVM) is also associated with gastroschisis. We conducted a retrospective slide review of 23 placentas of neonates with gastroschisis. Additionally, we selected 2 control groups of placentas: 1 with a previous diagnosis of DVM and 1 with normal villous morphology. All placentas were randomized and reviewed by 2 perinatal pathologists, who were blinded to the group; DVM and amniocyte vacuolization were assessed. Gastroschisis was associated with increased placental DVM in 65.2% of cases (vs 13.6% of controls; P = .0007) and increased amniocyte vacuolization in 52.2% of cases (vs 9.1% of controls; P = .003) compared to the control group. Based on the normal and DVM groups, kappa agreement between current slide review and initial pathology diagnosis was 0.419, indicating moderate agreement. Our study shows that gastroschisis is associated with placental DVM. This association may be due to (1) a common upstream factor contributing to both gastroschisis and DVM or (2) DVM may be a consequence of the altered placental and amniotic environment in the context of gastroschisis.

Regional cluster of vanishing gastroschisis: A comparative study of antenatal and post-natal outcomes

AIM

Vanishing gastroschisis describes the in utero spontaneous closure of the periumbilical defect. It is usually associated with intestinal loss due to ischaemia, necrosis and atresia. This comparative study aims to investigate the spectrum of pathology, antenatal ultrasound characteristics and post-natal outcomes.

METHODS

Our tertiary centre provides antenatal and post-natal care of major congenital anomalies for a population of 1.6 million. Medical records were retrospectively evaluated for all cases of vanishing gastroschisis from May 2014 to May 2015. Cases of normal variant gastroschisis born during the same period were used for comparison. Maximum antenatael bowel diameter measurements were compared using the Mann-Whitney U-test.

RESULTS

Six infants with vanishing gastroschisis were born during the study period, representing 50% of all live-born gastroschisis. Antenatal ultrasound showed progressively increasing intra-abdominal bowel dilatation, with antenatal intra-abdominal bowel diameter significantly greater in vanishing, than normal, variant gastroschisis (23.2 vs. 4.1 mm, P < 0.01). The classification of vanishing gastroschisis severity comprised two type I, three type II and one type III cases. Complete midgut atresia affected three infants, leading to overall mortality of 50% for the vanishing gastroschisis group versus 0% in the normal variant group (P = 0.05).

CONCLUSION

Vanishing gastroschisis is a severe, often catastrophic variant of gastroschisis. Aetiological factors contributing to the recent high incidence of this rare complication in our population of newborns remain unknown, prompting secondary prevention strategies to salvage the midgut. We propose closer antenatal surveillance for fetuses with intra-abdominal bowel dilatation >10 mm to prompt consideration of earlier delivery to improve morbidity and mortality.

Parental age and child outcomes

This review summarizes the impact of parental age on children's health outcomes beyond the perinatal period. In the last decades, delayed parenthood with both men and women has become a public health issue. For women, in particular, the size of this delay is substantial. For a few medical conditions, older parental age has a pronounced effect on child morbidity. For most other outcomes, a more modest effect is evident. Although these effects might be limited on an individual level, they have a substantial impact at the level of population health.

Increasing prevalence, time trend and seasonality of gastroschisis in São Paulo state, Brazil, 2005-2016

To estimate the gastroschisis seasonality and trend of prevalence in recent years, stratified by maternal age and geographical clusters of São Paulo state, a population-based study was designed. We used data from the Live Births Information System (SINASC) in São Paulo state, Brazil, from 2005 to 2016. Trends of prevalence were evaluated for the specific subgroups using the Prais-Winsten regression model, and the Durbin-Watson test was used, to estimate the regression coefficient, the annual percent change (APC), and 95% confidence interval (CI). We observed 1576 cases of gastroschisis among 7,317,657 live births (LB), a prevalence of 2.154 (95% CI: 2.047-2.260) per 10,000 LB which included, 50.6% males, 67.4% Caucasians, 53.4% preterm births, and 80.9% caesarean births. The prevalence of gastroschisis significantly increased by 2.6% (95% CI: 0.0-5.2) per year, and this trend was higher in mothers aged 30-34 years (APC: 10.2, 95% CI: 1.4-19.4) than in mothers of other age groups. Between 2011 and 2016, we identified the existence of seasonality based on the date of conception in the middle months of the year (p = 0.002). This is the first and largest population-based study summarizing current epidemiology and identifying trend of prevalence of gastroschisis in São Paulo state.

Gestational Outcomes of Pregnancies with Prenatally Detected Gastroschisis and Omphalocele

Objective: To evaluate and compare the outcomes of pregnancies with prenatally detected gastroschisis and omphalocele. Materials and Methods: We retrospectively evaluated prenatally detected gastroschisis and omphalocele cases. Cases were compared in terms of maternal demographic and clinical characteristics as well as pregnancy and neonatal outcomes. Results: This study consisted of 17 gastroschisis and 30 omphalocele cases. Only one case with gastroschisis was terminated due to additional severe limb deformities. Seventeen out of 30 cases of omphalocele were terminated for various reasons (56.7%). All patients with gastroschisis had surgical repair, while 8 out of 13 omphalocele cases had surgery. One patient with an omphalocele died after surgery due to sepsis. Six cases of gastroschisis also died in the neonatal period due to various reasons (6/16, 37.5%). Conclusion: Additional genetic disorders are more frequent in those with omphalocele cases, and they are more frequently terminated during gestation that the gastroschisis fetuses.

Fetal abdominal wall defects in an Australian tertiary setting: contemporary characteristics, ultrasound accuracy, and outcome

PURPOSE

In this study, we aimed to comprehensively evaluate risk factors, ultrasound estimation of fetal weight, prenatal management, and pregnancy outcomes of gastroschisis and omphalocele at a metropolitan Australian hospital.

MATERIAL AND METHODS

This was a retrospective single-center cohort study from 2006 to 2014 at a tertiary hospital with colocated neonatal surgical facilities. Demographic, pregnancy, ultrasound, birth and neonatal data were compared between gastroschisis and omphalocele. Correlation between routine (Hadlock 1 &2) and specific (Siemer) estimated fetal weight (EFW) estimation formulae with birth weight (BW) was made for those 50 gastroschisis cases with ≥2 third trimester scans and last scan ≤2 weeks prior to birth.

RESULTS

There were 126 abdominal wall defects: 83 gastroschisis and 43 omphalocele. Consistent with international literature, the average maternal age was lower for gastroschisis and rates of smoking higher, while there were more intrauterine deaths and pregnancy terminations in omphalocele. Gastroschisis mothers were more likely living outside Sydney, had more infections in pregnancy and were followed with a larger number of antenatal visits, with a shorter period from the last visit to birth. In omphalocele pregnancies, amniocentesis was more likely performed, with more abnormal results than in gastroschisis fetuses. All EFW formulae had a good correlation between Z score for the last US and actual BW (ICC 0.693-0.815), with Hadlock 2 being the best. Siemer formula had the best correlation from first to the last scan. Gastroschisis newborns were born earlier (36.8 versus 38.2 wks p = .001), with smaller birthweight (2.52 versus 3.03 kg, p < .001), a longer request of intensive care (central line, parenteral nutrition, intubation) and second surgery, along with more multisystem complications (average 1.5 versus 0.7, p = .004) and a longer hospital stay (58.8 versus 36.8 d, p < .001).

CONCLUSION

Demographic, antenatal, and pregnancy outcome data for abdominal wall defects correlated well with the international literature. Hadlock 1-2 gave the most consistent EFW estimate, with all formulae showing good correlation.

A review of genetic factors underlying craniorachischisis and omphalocele: Inspired by a unique trisomy 18 case

Very few cases of craniorachischisis (CRN) with concomitant omphalocele (OMP) in the setting of trisomy 18 are reported in literature. Solitary midline closure defects are estimated to be more prevalent in trisomy 18 compared to the general population. Neurulation defect comparisons include anencephaly 0-2% versus 0.0206%, spina bifida 1-3% versus 0.0350%, and encephalocele 0-2% versus 0.0082% [Parker et al. (2010); Birth Defects Research. Part A: Clinical and Molecular Teratology, 88:1008-1016; Springett et al. (2015); American Journal of Medical Genetics. Part A, 167A:3062-3069]. The solitary anterior malformation OMP has been reported as high as 6% with trisomy 18 [Springett et al. (2015); American Journal of Medical Genetics. Part A, 167A:3062-3069]. We report the third published case of CRN with concomitant OMP observed in a likely trisomy 18 fetus that screened positive by noninvasive prenatal screening. Furthermore, we review and analyze the current literature to augment understanding of the genetic basis for anterior and posterior closure defects such as CRN and OMP. Although the current genetic lexicon lacks any definitive association with the simultaneous defects presented, previous research elucidated various genes related to anterior or posterior closure interruption individually. By consolidating current research, the authors advance knowledge of interconnected genetic pathology and direct future genetic mapping efforts.

Gastroschisis Following Treatment with High-Dose Methimazole in Pregnancy: A Case Report

Hyperthyroidism in pregnancy is associated with a increased incidence of low birth weight, preterm birth and admission to the neonatal intensive care unit. However, available treatment options are limited. In this report, we present a case of fetal gastroschisis with a history of intrauterine exposure to methimazole. A 37-year-old woman was diagnosed with Grave’s disease 3 years before her pregnancy. She had a poor response to propylthiouracil and required high-dose methimazole before her pregnancy. During the first trimester, she received methimazole 120 mg/day. After her 12th week of pregnancy, she received block-and-replace therapy (levothyroxine [LT4] 50 µg/day) because of the risk of hypothyroidism, and the dose of methimazole was downtitrated to 60 mg/day. Fetal ultrasonography showed fetal growth retardation and gastroschisis at gestational week 33. The relationship between the very high doses of methimazole in the first trimester of pregnancy and the incidence of gastroschisis in this patient was not fully understood because evidence of a relationship between the use of antithyroid drugs in the first trimester and congenital abnormalities in the fetus is lacking. Furthermore block-and-replace therapy is not recommended in pregnancy because it requires a higher dose of methimazole. We recommend preconception counseling and early screening of thyroid function. The counseling should include the best timeline for pregnancy and a discussion of the risks and benefits of hyperthyroidism treatment options.

Insights into embryology and development of omphalocele

Congenital abdominal wall defects are one of the most common human birth defects with an incidence of about 1 in 2000 live births. While often discussed together abdominal wall defects consist mainly of two distinct entities namely gastroschisis and omphalocele. There is no clear consensus explaining the precise embryological mechanisms leading to the development of an omphalocele. Many clinicians and embryologists have attempted to explain congenital malformation as a result of failure of progression of normal embryonic development. This review summarizes the mechanisms involved in normal and abnormal development of the ventral abdominal wall.

Epidemiology of gastroschisis: A population-based study in California from 1995 to 2012

BACKGROUND

Although the incidence of gastroschisis is increasing, risk factors are not clearly identified.

METHODS

Using the Linked Birth Database from the California Office of Statewide Health Planning and Development from 1995 to 2012, patients with gastroschisis were identified by ICD-9 diagnosis/procedure code or birth certificate designation. Logistic regressions examined demographics, birth factors, and maternal exposures on risk of gastroschisis.

RESULTS

The prevalence of gastroschisis was 2.7 cases per 10,000 live births. Patients with gastroschisis had no difference in fetal exposure to alcohol (p = 0.609), narcotics (p = 0.072), hallucinogenics (p = 0.239), or cocaine (p = 0.777), but had higher exposure to unspecified/other noxious substances (OR 3.27, p = 0.040; OR 2.02, p = 0.002). Gastroschisis was associated with low/very low birthweight (OR 5.08-16.21, p < 0.001) and preterm birth (OR 3.26-10.0, p < 0.001). Multivariable analysis showed lower risk in black (OR 0.44, p < 0.001), Asian/Pacific Islander (OR 0.76, p = 0.003), and Hispanic patients (OR 0.72, p < 0.001) compared to white patients. Risk was higher in rural areas (OR 1.24-1.76, p = 0.001). Compared to women age < 20, risk decreased with advancing maternal age (OR 0.49-OR 0.03, p < 0.001). Patients with gastroschisis had increased total charges ($336,270 vs. $9012, p < 0.001) and length of stay (38.1 vs. 2.9 days, p < 0.001). Mortality was 4.6%.

CONCLUSIONS

This is the largest population-based study summarizing current epidemiology of gastroschisis in California.

TYPE OF STUDY

Retrospective comparative cohort study.

LEVEL OF EVIDENCE

III.

Insights into the etiology and embryology of gastroschisis

The development of gastroschisis has long remained an area of interest and controversy. Successive theories about its pathogenesis are herein reviewed and discussed. Two historical assumptions, that omphalocele results from a persistent umbilical hernia, and that gastroschisis does not involve the umbilical cord, are dismissed. Therefore, one can envision gastroschisis for what it is, i.e. a ruptured physiological hernia. The causal agents for this intrauterine accident to occur are yet to be determined. Further bowel damage and complications can be explained by the mesenteric insult.

Vanishing gastroschisis visualized by antenatal ultrasound: a case report and review of literature

We report a case of vanishing gastroschisis visualized by antenatal ultrasound with a 7-year long term follow-up. Currently, the child is still dependent on daily parenteral nutrition with no signs of hepatotoxicity. To our knowledge, it's the fourth case with a long-term follow-up. Vanishing gastroschisis is a rare complication of gastroschisis. However, physicians should be aware of it because its prognosis is worse than classical gastroschisis. When a vanishing gastroschisis is visualized or suspected by antenatal ultrasound, prenatal counseling is required with explanations about the risk of short bowel syndrome, the need of parenteral nutrition and related complications (inflammatory colitis, sepsis, liver failure and organ transplant). Mortality rate was initially around 93%, and dropped to 27% after the years 2000 (versus 10% for classical gastroschisis). After birth, all children will require surgery, and sometimes autologous gastro-intestinal reconstruction. Most survivors (68%) could be taken off the TPN. Unfortunately, long-term outcomes for children with vanishing gastroschisis are still missing in current literature.

A Giant Gastroschisis Associated with Pulmonary Hypoplasia and Spinal Anomaly: A Case Report and a Literature Review

Gastroschisis most often occurs as an isolated anomaly and extragastrointestinal associations are rare. Most commonly, the anomalies associated with gastroschisis are cardiac and central nervous system abnormalities. Respiratory insufficiency has sometimes been reported in association with giant abdominal wall defects. Poor outcomes and prolonged ventilator support have been reported in giant gastroschisis and omphalocele, especially if associated with herniation of the majority of the liver. We report a case of a large gastroschisis that was associated with a kyphoscoliosis and pulmonary hypoplasia.

Cognition and behaviour in children with congenital abdominal wall defects

AIM

To characterise neurodevelopment at age two years and cognition and behaviour at age five years in children born with abdominal wall defects (gastroschisis or exomphalos).

STUDY DESIGN

Participants were treated as neonates for gastroschisis or exomphalos and invited for routine clinical follow-up at ages two and five years. Thirty-nine two year-olds and 20 five year-olds with gastroschisis and 20 two year-olds and 10 five year-olds with exomphalos returned for age-appropriate assessments of development (two years) and intellectual functioning (IQ), executive function, and behavioural problems. Results were compared with normative data from the tests and published data from local term-born children.

RESULTS

For both gastroschisis and exomphalos two year-olds, neurodevelopment was in line with the test normative data, but below the level of local normative data for all domains (effect sizes from -0.4 to -1.4 standard deviations). At five years, children with gastroschisis performed similarly to the normative mean for IQ but had high rates of various executive functioning problems on parent report (18-41% compared with 7% expected from norms). There was also a tendency for increased frequency of internalising problems (33% compared with normative expectation of 16%). Five year-olds with exomphalos also performed similarly to the normative mean for IQ and had low rates of executive and behavioural problems.

CONCLUSIONS

Survivors of gastroschisis and exomphalos may be at risk of poor neurodevelopment in toddlerhood, depending on the reference group, and children with gastroschisis may be particularly at risk for executive functioning difficulties despite an IQ within normal limits.

Gastroschisis. Case report and management in primary care services

Introducción. La gastrosquisis es una enfermedad de baja prevalencia, pero de muy buen pronóstico si se realiza un adecuado manejo inicial. El presente escrito tiene como objetivo realizar una descripción de esta patología, destacando la importancia de su correcto manejo en el primer nivel.Presentación del caso. Neonato a término con hallazgo de gastrosquisis en primer nivel quien fue remitido al servicio de neonatología de una institución de tercer nivel. El infante recibió manejo interdisciplinario y cierre quirúrgico gradual y tuvo evolución favorable tras 3 meses de hospitalización.Discusión. No existe claridad sobre la causa exacta de la gastrosquisis, ya que es una enfermedad multifactorial. Su diagnóstico puede realizarse desde la etapa prenatal mediante la ultrasonografía, un método que posee alta sensibilidad y especificidad para su detección.Conclusión. La gastrosquisis es una enfermedad que para su diagnóstico y tratamiento requiere de personal especializado en primer nivel, lo que garantiza un correcto manejo inicial y evita futuras complicaciones.

The significance of organ prolapse in gastroschisis

PURPOSE

The aim of this study was to evaluate the incidence and importance of organ prolapse (stomach, bladder, reproductive organs) in gastroschisis.

METHODS

This is a retrospective review of gastroschisis patients from 2000 to 2014 at a single tertiary institution. Statistical analysis was performed using a chi-square test, Student's t test, log-rank test, or Cox regression analysis models. All tests were conducted as two-tailed tests, and p-values <0.05 were considered statistically significant.

RESULTS

One hundred seventy-one gastroschisis patients were identified. Sixty-nine (40.6%) had at least one prolapsed organ besides bowel. The most commonly prolapsed organs were stomach (n=45, 26.3%), reproductive organs (n=34, 19.9%), and bladder (n=15, 8.8%). Patients with prolapsed organs were more likely to have simple gastroschisis with significant decreases in the rate of atresia and necrosis/perforation. They progressed to earlier enteral feeds, discontinuation of parenteral nutrition, and discharge. Likewise, these patients were less likely to have complications such as central line infections, sepsis, and short gut syndrome.

CONCLUSIONS

Gastroschisis is typically described as isolated bowel herniation, but a large portion have prolapse of other organs. Prolapsed organs are associated with simple gastroschisis, and improved outcomes most likely due to a larger fascial defect. This may be useful for prenatal and postnatal counseling of families.

TYPE OF STUDY

Case Control/Retrospective Comparative Study.

LEVEL OF EVIDENCE

Level III.

Possible etiologies of increased incidence of gastroschisis

PURPOSE

Gastroschisis incidence has increased over the past decade nationally and in Hawaii. Pesticides have been implicated as potential causative factors for gastroschisis, and use of restricted use pesticides (RUPs) is widespread in Hawaii. This study was conducted to characterize gastroschisis cases in Hawaii and determine whether RUP application correlates with gastroschisis incidence.

METHODS

Gastroschisis patients treated in Hawaii between September, 2008 and August, 2015 were mapped by zip code along with RUP use. Spatial analysis software was used to identify patients' homes located within the pesticide application zone and agricultural land use areas.

RESULTS

71 gastroschisis cases were identified. 2.8% of patients were from Kauai, 64.8% from Oahu, 16.9% from Hawaii, 14.1% from Maui, and 1.4% from Molokai. RUPs have been used on all of these islands. 78.9% of patients lived in zip codes overlapping agricultural land use areas. 85.9% of patients shared zip codes with RUP-use areas.

CONCLUSION

The majority of gastroschisis patients were from RUP-use areas, supporting the idea that pesticides may contribute to the development of gastroschisis, although limited data on specific releases make it difficult to apply these findings. As more RUP-use data become available to the public, these important research questions can be investigated further.

Sequence variants identification at the KCNQ1OT1:TSS differentially Methylated region in isolated omphalocele cases

Background

Omphalocele is a congenital midline ventral body wall defect that can exist as isolated malformation or as part of a syndrome. It can be considered one of the major and most frequent clinical manifestation of Beckwith-Wiedemann Syndrome (BWS) in case of loss of methylation at KCNQ1OT1: Transcription Star Site-Differentially Methylated Region (TSS-DMR) or in presence of CDKN1C mutations. The isolated form of the omphalocele accounts approximately for about the 14% of the total cases and its molecular etiology has never been fully elucidated.

Methods

Given the tight relationship with BWS, we hypothesized that the isolated form of the omphalocele could belong to the heterogeneous spectrum of the BWS associated features, representing an endophenotype with a clear genetic connection. We therefore investigated genetic and epigenetic changes affecting BWS imprinted locus at 11p15.5 imprinted region, focusing in particular on the KCNQ1OT1:TSS DMR.

Results

We studied 21 cases of isolated omphalocele detected during pregnancy or at birth and identified the following rare maternally inherited variants: i) the non-coding variant G > A at nucleotide 687 (NR_002728.3) at KCNQ1OT1:TSS-DMR, which alters the methylation pattern of the imprinted allele, in one patient; ii) the deletion c.624-629delGGCCCC at exon 1 of CDKN1C, with unknown clinical significance, in two unrelated cases.

Conclusions

Taken together, these findings suggest that KCNQ1OT1:TSS-DMR could be a susceptibility locus for the isolated omphalocele.

Electronic supplementary material

The online version of this article (10.1186/s12881-017-0470-z) contains supplementary material, which is available to authorized users.

[Prenatal diagnosis of abdominal wall defects]

Anterior abdominal wall defects (AAWD) correspond to a wide spectrum of congenital defects affecting 6.3/10,000 pregnancies. They have in common a closure defect of the anterior abdominal wall and can be fatal or expose the fetus and the neonate (NN) to many complications. This study was based on a retrospective study of 22 cases of AAWD collected between May 2009 and December 2014. Its purpose was to specify the importance of prenatal ultrasonography in the diagnosis and prognosis assessment of these defects. These 22 AAWDs consisted in 13 cases of omphalocele (including four cases of Beckwith-Wiedemann syndrome), four of gastroschisis, one of pentalogy of Cantrell, three of vesical exstrophy and one of cloacal exstrophy. Prenatal ultrasonography provided the diagnosis of 14 of these defects with a changing sensitivity with the gestational age varying from 17% in the first trimester to 71.4% and 77.8% in the second and third trimesters, respectively. The relevance of this examination was improved when performed by an imaging specialist. The prenatal diagnosis of these defects indicated an amniocentesis in eight cases, allowing the diagnosis of two cases of trisomy 18. It also motivated a therapeutic termination of the pregnancy (TTP) in ten cases. Prenatal ultrasonography allowed better prenatal follow-up and planning of the delivery of the continued pregnancies. It indicated an emergency C-section in only one case by showing intestinal complications of gastroschisis. Four NNs died (two cases of omphalocele and two of gastroschisis), three of which postoperatively and the prenatal diagnosis did not improve survival. Prenatal ultrasonographic diagnosis provided a precise morphological study determining the type of the AAWD, a complete malformation assessment, and the prognosis factors. This resulted in adequate multidisciplinary pre and postnatal care, including a rigorous ultrasound follow-up, a TTP in case of associated defects, and emergency delivery once the complications of poor diagnosis are detected.

A novel approach in the treatment of neonatal gastroschisis: a review of the literature and a single-center experience

Gastroschisis is a congenital abdominal wall defect and its management remains an issue. We performed a review of the literature to summarize its evaluation, management and outcome and we describe a new type of surgical reduction performed in our center without anesthesia (GA), immediately after birth, in the delivery room. Between January 2002 and March 2013, we enrolled all live born infants with gastroschisis referred to the third-level Division of Obstetrics and Gynecology "San Camillo" of Rome. Two groups of infants were identified: group 1 in which gastroschis reduction was performed by the traditional technique and group 2 in which reduction was immediately performed after birth in the delivery room without GA. Twelve infants were enrolled in group 1, and seven infants in group 2. Statistical significance was observed between the groups regarding the hospital stay, for the duration of parenteral nutrition and full oral feeds (p = .004). Survival was similar between two groups. The reduction without GA performed immediately after birth in a delivery room encourages the relationship between the mother and her child and appears to be a safe and feasible technique in a selected group of patients with simple gastroschisis defect; for this reason, it could represent a valid alternative to traditional approach.