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Abstract
Objective. We seek to determine whether (1) mean abdominal circumference (AC) of fetuses with gastroschisis is smaller than published normative values, (2) diagnosis of AC ≤2.5th percentile is supported by postnatal diagnosis of small-for-gestational age (SGA) and (3) adverse neonatal outcomes are more common in fetuses affected by gastroschisis with a sonographically measured small AC.
Methods. Retrospective review of pregnancies complicated with gastroschisis between 2000 and 2008. Patient demographics, method of closure, length of stay, use of ventilator support and gastrointestinal complications were compared.
Results. Seventy-four fetuses were identified with 368 ultrasound observations. Mean AC of fetuses with gastroschisis fell between the 2.5th and 50th percentile for gestational age. Thirty patients had AC measurements ≤2.5th of which 50% were SGA at delivery. Eleven of the 74 fetuses were diagnosed with intrauterine growth restriction (IUGR) and all were SGA. Birth weight was lower in those with a small AC (2104 g vs. 2665 g, p < 0.001). There were no other differences in outcomes.
Conclusion. AC values fell within the normal range of normative curves. Fifty percent of fetuses with small AC were SGA at birth. Neonatal outcomes in patients with small AC are similar to those with a normal AC.
Acknowledgements
We would like to acknowledge Mark B. Landon, MD and Courtney Lynch, PhD for their review of the manuscript.