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Pediatric Radiology
Published in: Pediatric Radiology 5/2018

Open Access 01-05-2018 | Original Article

Bowel ultrasound for predicting surgical management of necrotizing enterocolitis: a systematic review and meta-analysis

Authors: Alain C. Cuna, Nidhi Reddy, Amie L. Robinson, Sherwin S. Chan

Published in: Pediatric Radiology | Issue 5/2018

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Abstract

Background

Necrotizing enterocolitis (NEC) is a devastating inflammatory disease of the intestinal tract that represents a significant source of morbidity and mortality in preterm infants. Imaging of the abdomen is valuable for timely diagnosis and close monitoring of disease progression in NEC. Bowel ultrasound (US) is increasingly being recognized as an important imaging tool for evaluating NEC that provides additional detail than plain abdominal radiographs.

Objective

To identify bowel US findings associated with surgical management or death in infants with NEC.

Materials and methods

We searched Embase, PubMed, and the Cumulative Index to Nursing and Allied Health Literature for studies investigating the association between bowel US findings and surgical management or death in NEC. Selected articles were evaluated for quality of study methodology using the Newcastle-Ottawa Scale, and aggregate statistics for odds ratio (OR) and 95% confidence interval were calculated.

Results

Of 521 articles reviewed, 11 articles comprising 748 infants were evaluated for quality. Nine of the studies were retrospective and from single-center experiences. Pooled analysis showed that focal fluid collections (OR 17.9, 3.1–103.3), complex ascites (OR 11.3, 4.2–30.0), absent peristalsis (OR 10.7, 1.7–69.0), pneumoperitoneum (OR 9.6, 1.7–56.3), bowel wall echogenicity (OR 8.6, 3.4–21.5), bowel wall thinning (OR 7.11.6–32.3), absent perfusion (OR 7.0, 2.1–23.8), bowel wall thickening (OR 3.9, 2.4–6.1) and dilated bowel (OR 3.5, 1.8–6.8) were associated with surgery or death in NEC. In contrast, portal venous gas (OR 3.0, 0.8–10.6), pneumatosis intestinalis (OR 2.1, 0.9–5.1), increased bowel perfusion (OR 2.6, 0.6–11.1) and simple ascites (OR 0.54, 0.1–2.5) were not associated with surgery or death.

Conclusion

This meta-analysis identified several bowel US findings that are associated and not associated with surgery or death in NEC. Bowel US may be useful for early identification of high-risk infants with NEC who may benefit from more aggressive treatment, including surgery. Future studies are needed to determine whether the addition of bowel US in NEC evaluation would improve outcomes.
Appendix
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Metadata
Title
Bowel ultrasound for predicting surgical management of necrotizing enterocolitis: a systematic review and meta-analysis
Authors
Alain C. Cuna
Nidhi Reddy
Amie L. Robinson
Sherwin S. Chan
Publication date
01-05-2018
Publisher
Springer Berlin Heidelberg
Published in
Pediatric Radiology / Issue 5/2018
Print ISSN: 0301-0449
Electronic ISSN: 1432-1998
DOI
https://doi.org/10.1007/s00247-017-4056-x

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