UZH-Logo

Maintenance Infos

Newborn weight charts underestimate the incidence of low birthweight in preterm infants


Burkhardt, T; Schäffer, L; Zimmermann, R; Kurmanavicius, J (2008). Newborn weight charts underestimate the incidence of low birthweight in preterm infants. American Journal of Obstetrics and Gynecology, 199(2):139.e1-139.e6.

Abstract

OBJECTIVE: The objective of the study was to compare sonographic fetal weight estimates with newborn weight charts and analyze the predictive accuracy of the ponderal index (PI) in preterm infants. STUDY DESIGN: We generated sonographic reference curves for fetal weight and PI estimates from a database of fetal biometric records from 12,589 term deliveries. We then plotted sonographic and newborn weight and PI of 2406 preterm newborns on these curves and compared them with published newborn weight charts. RESULTS: The third centiles of sonographic and newborn weights diverged markedly between 25 and 36 weeks of gestation and by more than 400 g at 32-33 weeks. In contrast, sonographic and newborn PI values were similar despite uncertainties as to fetal length. CONCLUSION: We suggest using sonographic reference fetal weights to screen preterm newborns for low birthweight. Uncertainties in fetal length threaten the reliability of the PI.

OBJECTIVE: The objective of the study was to compare sonographic fetal weight estimates with newborn weight charts and analyze the predictive accuracy of the ponderal index (PI) in preterm infants. STUDY DESIGN: We generated sonographic reference curves for fetal weight and PI estimates from a database of fetal biometric records from 12,589 term deliveries. We then plotted sonographic and newborn weight and PI of 2406 preterm newborns on these curves and compared them with published newborn weight charts. RESULTS: The third centiles of sonographic and newborn weights diverged markedly between 25 and 36 weeks of gestation and by more than 400 g at 32-33 weeks. In contrast, sonographic and newborn PI values were similar despite uncertainties as to fetal length. CONCLUSION: We suggest using sonographic reference fetal weights to screen preterm newborns for low birthweight. Uncertainties in fetal length threaten the reliability of the PI.

Citations

1 citation in Web of Science®
12 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

3 downloads since deposited on 16 Dec 2008
0 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Obstetrics
Dewey Decimal Classification:610 Medicine & health
Uncontrolled Keywords:estimated fetal weight, low birthweight, ponderal index, preterm delivery, ultrasound
Language:English
Date:August 2008
Deposited On:16 Dec 2008 12:24
Last Modified:05 Apr 2016 12:36
Publisher:Elsevier
ISSN:0002-9378
Publisher DOI:10.1016/j.ajog.2008.01.011
PubMed ID:18395687
Permanent URL: http://doi.org/10.5167/uzh-6125

Download

[img]
Filetype: PDF - Registered users only
Size: 1MB
View at publisher

TrendTerms

TrendTerms displays relevant terms of the abstract of this publication and related documents on a map. The terms and their relations were extracted from ZORA using word statistics. Their timelines are taken from ZORA as well. The bubble size of a term is proportional to the number of documents where the term occurs. Red, orange, yellow and green colors are used for terms that occur in the current document; red indicates high interlinkedness of a term with other terms, orange, yellow and green decreasing interlinkedness. Blue is used for terms that have a relation with the terms in this document, but occur in other documents.
You can navigate and zoom the map. Mouse-hovering a term displays its timeline, clicking it yields the associated documents.

Author Collaborations