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Archives of Gynecology and Obstetrics
Published in: Archives of Gynecology and Obstetrics 2/2018

01-08-2018 | Images in Obstetrics and Gynecology

Study on the cephalopelvic relationship with cephalic presentation in nulliparous full-term Chinese pregnant women by MRI with three-dimensional reconstruction

Authors: Yi-Ge Li, Chun-Lin Chen, Ke-Dan Liao, Yan-Hong Yu, Yi-Kai Xu, Yan Wang, Wenjun Qiao, Ping Liu

Published in: Archives of Gynecology and Obstetrics | Issue 2/2018

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Abstract

Purpose

To analyze the relationship between fetal head size and maternal pelvis size using magnetic resonance imaging (MRI) with a 3-D reconstruction technique.

Methods

A total of 301 nulliparous full-term Chinese pregnant women with cephalic presentation were enrolled and received MRI examinations before labor onset. Data were collected and imported into Mimics software to reconstruct the maternal pelvis and fetus.

Results

Of 301 pregnant women, 212 underwent vaginal delivery and 32 received cesarean section. The body mass index (BMI) was significantly different between the vaginal delivery group and the suspected cephalopelvic disproportion (CPD) group; the larger the BMI, the higher was the risk of CPD. The transverse diameter of the pelvic inlet and the posterior sagittal diameter of the midpelvis were significantly larger in the vaginal delivery group, compared with the suspected CPD group. Fetal weight > 3.5 kg could be used as a diagnostic indicator for CPD.

Conclusions

BMI is a risk factor for CPD, and fetal weight < 3.5 kg is an important diagnostic indicator for natural delivery in Chinese pregnant women.
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Metadata
Title
Study on the cephalopelvic relationship with cephalic presentation in nulliparous full-term Chinese pregnant women by MRI with three-dimensional reconstruction
Authors
Yi-Ge Li
Chun-Lin Chen
Ke-Dan Liao
Yan-Hong Yu
Yi-Kai Xu
Yan Wang
Wenjun Qiao
Ping Liu
Publication date
01-08-2018
Publisher
Springer Berlin Heidelberg
Published in
Archives of Gynecology and Obstetrics / Issue 2/2018
Print ISSN: 0932-0067
Electronic ISSN: 1432-0711
DOI
https://doi.org/10.1007/s00404-018-4814-5

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