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Poor uterine contractility and postpartum hemorrhage among low-risk women: A case-control study of a large-scale database from Japan
- Source :
- International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and ObstetricsREFERENCES. 154(1)
- Publication Year :
- 2020
-
Abstract
- Objective To examine the association between the risk of postpartum hemorrhage (PPH) and poor uterine contractility, which is suggested by the characteristics of labor. Methods This case-control study used cases recorded in the Japan Perinatal Registry database during the period 2013-2016. After exclusion of women with specified known risk factors for PPH, we enrolled 174 082 primiparas who had a full-term live singleton vaginal birth. Participants were classified into four classes according to the diagnosis of abnormal labor patterns and use of uterotonics. χ2 tests were used to compare PPH cases with controls, and odds ratios (OR) were calculated by univariate and multivariate analyses. Results Among the enrolled women, 10 508 (6.0%) had PPH. Abnormal labor patterns were significantly associated with an increased risk of PPH. Compared with women without any abnormal labor patterns who had not used uterotonics, women with abnormal labor patterns were at a significantly increased risk for PPH regardless of whether they had used uterotonics (adjusted OR 1.23, 95% confidence interval [CI] 1.10-1.37) or not (adjusted OR 1.30, 95% CI 1.23-1.37). Conclusion Our study suggests that among low-risk women with PPH, poor uterine contractility in labor could be a significant predisposing risk factor for PPH.
- Subjects :
- Adult
Multivariate analysis
Vaginal birth
computer.software_genre
Uterine contractility
03 medical and health sciences
Young Adult
0302 clinical medicine
Abnormal labor
Japan
Pregnancy
Risk Factors
Medicine
Humans
030212 general & internal medicine
Risk factor
030219 obstetrics & reproductive medicine
Labor, Obstetric
Database
business.industry
Postpartum Hemorrhage
Uterus
Case-control study
Obstetrics and Gynecology
General Medicine
Odds ratio
Confidence interval
Case-Control Studies
Female
business
computer
Subjects
Details
- ISSN :
- 18793479
- Volume :
- 154
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and ObstetricsREFERENCES
- Accession number :
- edsair.doi.dedup.....6a6782b3459f8248c859c6fc617ba4f3