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

Description of this bibliographical database (AFAR website)
Currently 3032 records
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https://afar.info/id=1877

Created on : 02 Feb 2006
Modified on : 01 Dec 2007

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Bibliographical entry (without author) :

EFFECT OF EARLY AMNIOTOMY ON THE RISK OF DYSTOCIA IN NULLIPAROUS WOMEN. NEW ENGLAND JOURNAL OF MEDICINE 328 (16): 1145-1149 APR 22 1993

Author(s) :

FRASER WD, MARCOUX S, MOUTQUIN JM, CHRISTEN A

Year of publication :

1993

URL(s) :

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=…

Résumé (français)  :

Abstract (English)  :

BACKGROUND: Early amniotomy has been advocated as a means of preventing dystocia, but its efficacy has not been studied prospectively. The purpose of this multicenter study was to determine whether routine early amniotomy reduces the risk of dystocia for nulliparous women in spontaneous labor.
Methods. We studied 925 nulliparous women in labor, who were stratified according to the degree of cervical dilatation (<3 cm vs. greater-than-or-equal 3 cm) and randomly assigned to either early rupture of the membranes (amniotomy group) or conservative management of labor (conservative-management group). Dystocia was defined as a period of at least four hours after dilatation of the cervix to 3 cm had been reached during which the mean rate of cervical dilatation was less than 0.5 cm per hour.

RESULTS: Dystocia was significantly less frequent in the amniotomy group than in the conservative-management group (34 percent vs. 45 percent; relative risk, 0.8; 95 percent confidence interval, 0.6 to 0.9). The median length of time from randomization to full dilatation was 136 minutes shorter in the amniotomy group, and there was a trend toward less frequent use of oxytocin among the women assigned to amniotomy (36 percent vs. 41 percent; relative risk, 0.9; 95 percent confidence interval, 0.8 to 1.0). In a stratified analysis, the frequency of dystocia associated with amniotomy was reduced only among women with greater-than-or-equal 3 cm initial dilatation. The cesarean-section rate was similar in the two groups (amniotomy, 12 percent; conservative management, 11 percent). There were no statistically significant differences in outcome between the infants delivered by the women in the two groups; the measures of an adverse outcome included admission to a neonatal intensive care unit, five-minute Apgar score below 7. and arterial cord-blood pH below 7.2.

CONCLUSION. Early amniotomy is an effective method of shortening the duration of labor and reducing the frequency of dystocia among nulliparous women in labor, but it does not lower the rate of cesarean section.

Sumário (português)  :

Comments :

Argument (français) :

L’amniotomie précoce réduit la durée du travail et la fréquence de dystocie mais ne réduite pas le taux de césariennes.
Early amniotomy shortens the duration of labor and reduces the frequency of dystocia but does not lower the rate of cesarean section.

Argument (English):

Argumento (português):

Keywords :

➡ c-section/caesarean ; amniotomy ; active management of labor ; dystocy

Author of this record :

Sandrine Péneau — 02 Feb 2006

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