Purpose

The objective of this study is to investigate the hypothesis that delivery at 35 0/7- 35 6/7 weeks in stable patients with gastroschisis is superior to observation and expectant management with a goal of delivery at 38 0/7 - 38 6/7 weeks. To test this hypothesis, we will complete a randomized, prospective, multi-institutional trial across NAFTNet-affiliated institutions. Patients may be enrolled in the study any time prior to 33 weeks, but will be randomized at 33 weeks to delivery at 35 weeks or observation with a goal of 38 weeks. The primary composite outcome will include stillbirth, neonatal death prior to discharge, respiratory morbidity, and need for parenteral nutrition at 30 days.

Condition

Eligibility

Eligible Ages
Over 18 Years
Eligible Genders
Female
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Subjects must (1) speak English, (2) be ≥18 years old, (3) have a sonographic diagnosis of gastroschisis ≤33 weeks gestation, (4) have a singleton pregnancy, and (5) provide written informed consent for study participation.

Exclusion Criteria

  • Subjects cannot have (1) a fetal anomaly unrelated to gastroschisis, such as a chromosomal abnormality or another congenital structural abnormality, (2) severe intrauterine growth retardation, (3) a maternal history of previous stillbirth or preterm delivery (<36 weeks), (4) maternal hypertension or insulin dependent diabetes (5) prenatal care began after 24 weeks of gestation (or) an unstable pregnancy. Additionally, subjects will be excluded if they are incapable of informed consent or are not their own legally authorized representative. Severe intrauterine growth retardation will be defined as growth below the 5th percentile for age. Patients will be considered to have an unstable pregnancy if any of the following criteria are met:
  • Amniotic Fluid Index (AFI) with maximal vertical pocket (MVP) <2cm or >8cm in third trimester
  • Umbilical artery Dopplers with S/D ratio or resistive index (RI) >97th percentile for age with or without absent or reverse end diastolic flow.
  • Non-stress test (NST) and/or biophysical profile (BPP) deemed non-reassuring by treating clinician

Study Design

Phase
Phase 3
Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel Assignment
Primary Purpose
Treatment
Masking
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
Active Comparator
35-week delivery group
Subjects to be delivered at 35 0/7 weeks through 35 6/7 weeks.
  • Other: 35-week delivery
    Induction at 35 weeks gestational age
Active Comparator
38-week delivery group
Subjects to be expectantly managed to spontaneous delivery, delivered by 38 0/7 weeks through 38 6/7 weeks.
  • Other: 38-week delivery
    Observation to spontaneous delivery or induction at 38 weeks gestational age

Recruiting Locations

University of Maryland, Baltimore
Baltimore, Maryland 21201
Contact:
Ozhan Turan, MD, PhD
410-328-7830
oturan@som.umaryland.edu

More Details

Status
Recruiting
Sponsor
Medical College of Wisconsin

Study Contact

Chris Fueger, MS
414-337-6725
cfueger@chw.org

Detailed Description

Gastroschisis is the most common congenital abdominal wall abnormality in which the intestines are outside of body floating in the amniotic fluid. This is diagnosed by prenatal ultrasound at 18-20 weeks gestation. Gastroschisis occurs in 1 out of every 4000 births and the incidence is increasing. The majority of patients with gastroschisis have an uncomplicated neonatal course and recover well after surgical repair. However, subsets of gastroschisis patients have more complicated courses due to loss of intestine or blockages of the intestine These infants have a higher risk of death and long-term morbidity. Additionally, gastroschisis patients have an increased risk of in-utero fetal demise or stillbirth.

The potential risk of pregnancy loss late in the third trimester has prompted some physicians to deliver gastroschisis patients prior to term. This results in an increased chance of additional prematurity-related complications. There is no consensus about the ideal time to deliver a baby with gastroschisis and practice patterns vary widely. It is unclear which offers the fetus a chance at a better outcome: early delivery to mitigate risk of stillbirth and intestinal injury versus delivery closer to term.

Retrospective data published show inconsistent results on outcomes with early delivery or later gestational age delivery in gastroschisis. There have been two randomized, prospective trials with delivery early versus awaiting spontaneous labor. The first included 42 patients rendering the study largely underpowered. There was a trend towards decreased length of hospital stay and earlier time to full enteral feeding in the early delivery group, but this did not reach statistical significance. The latest study was stopped early because of futility and an increased risk of sepsis in the early group. There was no increase in sepsis in the early group in the first trial, and the study design of this trial varies greatly from both studies.

Standard delivery times for uncomplicated gastroschisis are between 34 and 39 weeks gestation. As the current available literature does not adequately answer the question of optimal gestational age of delivery in patients with gastroschisis, the objective of this study is to investigate the hypothesis that delivery at 35 0/7 - 35 6/7 weeks in stable patients with gastroschisis is superior to observation and expectant management with a goal of delivery at 38 0/7 - 38 6/7 weeks. To test this hypothesis, we will complete a randomized, prospective, multi-institutional trial. Patients may be enrolled in the study any time prior to 33 weeks but will be randomized at 33 weeks to delivery at 35 weeks or observation with a goal of 38 weeks. The primary outcome will be based on a weighted composite comprised of intrauterine fetal demise, neonatal/infant death prior to discharge, respiratory morbidity, gastrointestinal morbidity, and sepsis. We will compare the rates of the composite outcome as well as the individual components to determine whether a significant difference between the two strategies can be detected. Secondary maternal outcomes include need for labor induction, need for cesarean section, and complications of delivery including infection, blood transfusions, and thromboembolic events. We will also evaluate antenatal test values, such as amniotic fluid index, estimated fetal weight, and intra- and extra-abdominal bowel dilation. Secondary neonatal outcomes include birth and discharge weight, central venous catheter days, sepsis, intestinal atresia, necrotizing enterocolitis, time to enteral autonomy, individual components of respiratory morbidity, need for caffeine, and length of stay.

Given the unprecedented patient data being collected for the randomized trial, we plan to leverage the infrastructure built for this study to generate the largest prospective, multicenter database of gastroschisis-related (maternal, fetal, and neonatal) outcomes in the United States. The database will provide data for future development of both hypotheses and study design regarding gastroschisis-related outcomes. The associated biobank will collect blood from the neonatal participants to be stored and analyzed in future research.

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.