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J Matern Fetal Neonatal Med. 2019 Jul 3:1-10. doi: 10.1080/14767058.2019.1636029. [Epub ahead of print]

Imagiological methods for prediction of fetal pulmonary hypoplasia: a systematic review.

Author information

1
a Life and Health Sciences Research Institute, School of Medicine , University of Minho , Braga , Portugal.
2
b Life and Health Sciences Research Institute /3B's - PT Government Associate Laboratory , Braga , Portugal.
3
c Department of Paediatric Surgery , Hospital de Braga , Braga , Portugal.
4
d Department of Obstetrics and Gynaecology , Hospital de Braga , Braga , Portugal.

Abstract

Objective: To compare the different imagiological methods for prediction of fetal pulmonary hypoplasia (PH) in general diseases and associated with preterm rupture of membranes (PROM), and congenital diaphragmatic hernia (CDH). Methods: According to PRISMA guidelines, all the literature on PH from 1988 to 2018 was reviewed. Twenty-nine articles were selected and analyzed for two- and three- dimensional-ultrasounds (2D and 3D-US) as predictors for the lethal outcome. Results: Overall, the results identify a general gap correlating prenatal pulmonary measurements and survival at birth; discrepant predictive values for the same imagiological methods are explained by the group heterogeneity in terms of diseases and degree of severity, with the 2D measurements being more affected than 3D; 2D and 3D-US present equally predictive values for groups with 0% of survival. Regarding PROM, results demonstrate comparable accuracies for similar survival rates suggesting a useful predictive value of 2D-US in outcome estimation; they also identify ultrasonographic methods as a more accurate prognostic factor than gestational age at rupture, latency or amniotic fluid index. In CDH, consistent with previous studies, our review shows magnetic resonance imaging as a better survival predictor followed by the 3D and 2D methods, while 2D-LHR was the more precise prognosticator correlating prenatal PH, survival at birth, and the need for neonatal respiratory support. Conclusion: Ultrasonographic methods can be valuable predictors for lethal PH and should be validated for a broad set of diseases (e.g. PROM). For that, restricted studies for disease groups and correlating fetal PH with the needed of neonatal support, and survival at birth is critically recommended.

KEYWORDS:

CDH; PROM; pulmonary hypoplasia; systematic review; ultrasonography

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