Factors influencing the accuracy of fetal weight estimation with a focus on preterm birth at the limit of viability: a systematic literature review

Huber, Chantal; Zdanowicz, Jarmila Anna; Müller, Martin; Surbek, Daniel (2014). Factors influencing the accuracy of fetal weight estimation with a focus on preterm birth at the limit of viability: a systematic literature review. Fetal diagnosis and therapy, 36(1), pp. 1-8. Karger 10.1159/000358518

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BACKGROUND Fetal weight estimation (FWE) is an important factor for clinical management decisions, especially in imminent preterm birth at the limit of viability between 23(0/7) and 26(0/7) weeks of gestation. It is crucial to detect and eliminate factors that have a negative impact on the accuracy of FWE. DATA SOURCES In this systematic literature review, we investigated 14 factors that may influence the accuracy of FWE, in particular in preterm neonates born at the limit of viability. RESULTS We found that gestational age, maternal body mass index, amniotic fluid index and ruptured membranes, presentation of the fetus, location of the placenta and the presence of multiple fetuses do not seem to have an impact on FWE accuracy. The influence of the examiner's grade of experience and that of fetal gender were discussed controversially. Fetal weight, time interval between estimation and delivery and the use of different formulas seem to have an evident effect on FWE accuracy. No results were obtained on the impact of active labor. DISCUSSION This review reveals that only few studies investigated factors possibly influencing the accuracy of FWE in preterm neonates at the limit of viability. Further research in this specific age group on potential confounding factors is needed.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Gynaecology, Paediatrics and Endocrinology (DFKE) > Clinic of Gynaecology

UniBE Contributor:

Zdanowicz, Jarmila Anna; Müller, Martin and Surbek, Daniel

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1015-3837

Publisher:

Karger

Language:

English

Submitter:

Nathalie Ursula Becher

Date Deposited:

12 May 2015 16:43

Last Modified:

11 Nov 2015 09:24

Publisher DOI:

10.1159/000358518

PubMed ID:

24863502

BORIS DOI:

10.7892/boris.68909

URI:

https://boris.unibe.ch/id/eprint/68909

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