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PLoS One. 2012;7(6):e39883. doi: 10.1371/journal.pone.0039883. Epub 2012 Jun 29.

"Early rupture of membranes" during induced labor as a risk factor for cesarean delivery in term nulliparas.

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1
Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea.

Abstract

OBJECTIVE:

To determine if "early rupture of membranes" (early ROM) during induction of labor is associated with an increased risk of cesarean section in term nulliparas.

STUDY DESIGN:

The rate of cesarean section and the timing of ROM during the course of labor were examined in term singleton nulliparas whose labor was induced. Cases were divided into 2 groups according the timing of ROM: 1)"early ROM", defined as ROM at a cervical dilatation<4 cm during labor; and 2) "late ROM", ROM at a cervical dilatation‚Č•4 cm during labor. Nonparametric techniques were used for statistical analysis.

RESULTS:

1) In a total of 500 cases of study population, "early ROM" occurred in 43% and the overall cesarean section rate was 15.8%; 2) patients with "early ROM" had a higher rate of cesarean section and cesarean section due to failure to progress than did those with "late ROM" (overall cesarean section rate: 24%[51/215] vs. 10%[28/285], p<0.01; cesarean section rate due to failure to progress: 18%[38/215] vs. 8%[22/285], p<0.01 for each) and this difference remained significant after adjusting for confounding variables.

CONCLUSION:

"Early ROM" during the course of induced labor is a risk factor for cesarean section in term singleton nulliparas.

PMID:
22768153
PMCID:
PMC3387211
DOI:
10.1371/journal.pone.0039883
[Indexed for MEDLINE]
Free PMC Article
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