Choose your font:
 Mukta Malar
 Open Sans Condensed
 Source Sans Pro


[Valid RSS] RSS

Database - Alliance francophone pour l'accouchement respecté (AFAR)

Description of this bibliographical database (AFAR website)
Currently 3053 records
YouTube channel (tutorial)

Created on : 10 Feb 2004
Modified on : 02 Dec 2007

 Modify this record
Do not follow this link unless you know an editor’s password!

Share: Facebook logo   Tweeter logo   Hard

Bibliographical entry (without author) :

Risk of cesarean delivery in nulliparous women at greater than 41 weeks’ gestational age with an unengaged vertex. American Journal of Obstetrics and Gynecology 2004;190(1):129-34.

Author(s) :

Shin KS, Brubaker KL, Ackerson LM.

Year of publication :


URL(s) :…

Résumé (français)  :

Abstract (English)  :

OBJECTIVE : The purpose of this study was to determine whether an unengaged vertex significantly increased the risk of cesarean delivery in nulliparous patients at 41 weeks or greater.

STUDY DESIGN : The medical records from all nulliparous patients greater than 41 weeks’ gestation delivered at a single institution were reviewed. Patients undergoing both spontaneous and induced labor were included. Multivariate analyses were used to compare the influence of admission fetal station versus induction of labor on the risk of cesarean delivery.

RESULTS : Four hundred forty-eight nulliparous women at greater than 41 weeks’ gestation were delivered at our institution during the study period. Sixty-two percent of these patients underwent induction of labor. There was a statistically significant increase in cesarean delivery rate compared with station (6% of patients at -1 station, 20% at -2 station, 43% at -3 station, and 77% at -4 station; P = .001). Compared with patients with an engaged vertex, patients with an unengaged vertex had 12.4 times the risk of cesarean delivery. Most of the cesarean deliveries were performed for failure to progress. On the basis of multivariate analysis, the odds of cesarean delivery were better predicted by fetal station than induction of labor.

CONCLUSION : Nulliparous patients at 41 weeks or greater with an unengaged vertex are 12.4 times more likely to be delivered by cesarean section than a patient with an engaged vertex.

Sumário (português)  :

Comments :

Argument (français) :

Le risque de césarienne est multiplié par 12.4 pour une nullipare ayant dépassé 41 semaines d’âge gestationnel avec un bébé en vertex, s’il n’est pas encore engagé.

Argument (English):

Argumento (português):

Keywords :

➡ c-section/caesarean ; evidence-based medicine/midwifery ; physiology ; induction of labor ; dystocy ; post-term pregnancy

Author of this record :

Cécile Loup — 10 Feb 2004

Discussion (display only in English)
➡ Only identified users

 I have read the guidelines of discussions and I accept all terms (read guidelines)


New expert query --- New simple query

Creating new record --- Importing records

User management --- Dump database --- Contact


This database is managed by Alliance francophone pour l'accouchement respecté (AFAR,
affiliated with Collectif interassociatif autour de la naissance (CIANE,
It is fed by the voluntary contributions of persons interested in the sharing of scientific data.
If you agree with this project, you can support us in several ways:
(1) contributing to this database if you have a minimum training in documentation
(2) or financially supporting AFAR (see below)
(3) or joining the AFAR (or another society affiliated with CIANE).
Sign in or create an account to follow changes or become an editor.
Contact afar.association(arobase) for more information.

Valid CSS! Valid HTML!
Donating to AFAR (click “Faire un don”) will help us to maintain and develop sites and public
databases towards the support of parents and caregivers’ informed decisions with respect to childbirth