Observational studyPloS one2017
Hygroscopic dilators vs balloon catheter ripening of the cervix for induction of labor in nulliparous women at term: Retrospective study.
Observational study in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03752073 (Comparison of Two Mechanical Methods of Outpatient Ripening of the Cervix), which is not on this map. Cited by 6 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Comparison of Two Mechanical Methods of Outpatient Ripening of the Cervix
Who cites it
6 citing papers in PubMed, 16 citations in OpenAlex.
- The Effect of Preinduction Cervical Ripening With Synthetic Hygroscopic Dilators on Maternal Outcomes of Women With Previous Caesarean Pregnancy: A Single-Group Clinical Trial.Journal of pregnancy · 2024Trial
- Article
- Synthetic Osmotic Dilators for Pre-Induction Cervical Ripening - an Evidence-Based Review.Geburtshilfe und Frauenheilkunde · 2023Article
- A Review of the Mechanism of Action and Clinical Applications of Osmotic Dilators for Cervical Ripening in the Induction of Labor and in Gynecology Procedures.Medical science monitor : international medical journal of experimental and clinical research · 2023Review
- Mechanical dilatation of the stenosed cervix under local anesthesia: A prospective case series.The journal of obstetrics and gynaecology research · 2022Article
- Birthing ball on promoting cervical ripening and its influence on the labor process and the neonatal blood gas index.World journal of clinical cases · 2021Article
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo compare the efficacy and safety of hygroscopic dilators and balloon catheters for ripening of the cervix in induction of labor. STUDY
designThis retrospective, observational study used data from the Successive Pregnancy Birth Registry System of the Japan Society of Obstetrics and Gynecology from 2012 to 2014. Nulliparous women in whom labor was induced by mechanical methods of cervical ripening at term were enrolled. The eligible women were divided into dilator, balloon <40 mL, balloon ≧40 mL, and overlapping groups.
resultsThe groups included 4645, 4100, 6615, and 1992 women, respectively. In the overlapping group, which included the women in whom delivery was most difficult, the vaginal delivery rate was lower and the intrauterine infection and neonatal mortality rates were higher than those in the dilator group. No difference in the vaginal delivery rate was observed among the dilator, balloon <40 mL, and balloon ≧40 mL groups (74.6%, 72.3%, and 73.8%, respectively; p>0.05). The vaginal instrumental delivery rate was higher in the two-balloon groups than in the dilator group. The volume of intrapartum hemorrhage was lowest in the dilator group. No significant difference in the frequencies of uterine rupture and intrauterine infection were observed among the dilator and two-balloon groups. With regard to neonatal outcomes, the frequency of a low Apgar score was statistically significantly lower in the dilator group than in the two-balloon groups. Moreover, the frequency of neonatal death tended to be lower in the dilator group than in the two-balloon groups.
conclusionWith regard to cervical ripening for labor induction in nulliparous women at term, the vaginal delivery rate on using a dilator and on using a balloon seems to be equivalent. Concerning maternal complications and neonatal outcomes, cervical ripening with hygroscopic dilators in labor induction might be safer.
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