NCT05246761

Brief Summary

This study is a multi-center, prospective, observational clinical trial study. 924 full-term pregnant women will be enrolled as subjects, and the ratio of eligible subjects in the two groups is 1:1. In the prior cesarean section group, pregnant women with one previous cesarean section who are willing to try to the trial of labor after cesarean (TOLAC) and in accordance with the criteria according to the 2016 China vaginal birth after cesarean (VBAC) clinical management guidelines will be enrolled and recorded by our homemade registration form of TOLAC. In the control group, pregnant women after 39 weeks of gestation without vaginal labor contraindications will be enrolled. Whether in the experimental group or the control group, their cervical bishop score was less than 6 points, and they all will be induced by balloon catheter + oxytocin. After 96h, their final delivery mode will be recorded. In the following 42 days postpartum, their complications and the neonatal outcome will be followed up.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
924

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Jan 2022

Typical duration for all trials

Geographic Reach
1 country

1 active site

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

January 13, 2022

Completed
17 days until next milestone

Study Start

First participant enrolled

January 30, 2022

Completed
19 days until next milestone

First Posted

Study publicly available on registry

February 18, 2022

Completed
1.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 30, 2023

Completed
1.5 years until next milestone

Study Completion

Last participant's last visit for all outcomes

December 30, 2024

Completed
Last Updated

April 22, 2022

Status Verified

April 1, 2022

Enrollment Period

1.4 years

First QC Date

January 13, 2022

Last Update Submit

April 17, 2022

Conditions

Outcome Measures

Primary Outcomes (1)

  • vignial birth rate

    After the treatment of balloon catheter for 12 hours +oxytocin induction for up tp 72 hours, the mode of delivery will be konwn and recorded.

    up to 84 hours

Study Arms (2)

Cesarean section group

In the cesarean section group, all the pregnant women had only one prior cesarean section.

Device: Balloon catheter

Non-cesarean section group

In the non-cesarean section group, all the pregnant women are primipara,and never had a cesarean section.

Device: Balloon catheter

Interventions

In the two groups, if their bishop score \<6, they will receive the cervical riening by the balloon catheter, and then the oxytocin if necessary.

Cesarean section groupNon-cesarean section group

Eligibility Criteria

Age20 Years - 40 Years
Sexfemale
Healthy VolunteersYes
Age GroupsAdult (18-64)
Sampling MethodProbability Sample
Study Population

In the cesarean section group, the extra inclusion criteria includes: Only one prior low transverse uterine incision; Extra exclusion criteria: 1. With mutiple history of c esction; 2. Prior extensive transfundal uterine surgery, such as for fetal surgery, myomectomy, or uterine reconstruction; Prior classical vertical uterine incision, or an inverted "T" or "J" incision; 3. Short interpregnancy interval; 4. Prior uterine rupture or dehiscence, or cesarean scar pregnancy; 5. Evaluated fetal birth weight\> 4000 g. In the non-cesarean section group, the extra criteria should include: nulliparous

You may qualify if:

  • Volunteers sign the informed consent;
  • Age: 20-40 years;
  • Singleton, a cephalic presentation;
  • No contradiction to vaginal delivery; 5.39\~42 weeks.

You may not qualify if:

  • Konwn contraindication to vaginal delivery or severe complications;
  • Multiple gestation;
  • Uterine malformation;
  • Severe psychiatric disorder;
  • Without family's support.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

First Affiliated Hospital of Nanjing Medical University

Nanjing, Jiangsu, China

RECRUITING

Related Publications (2)

  • Huisman CMA, Ten Eikelder MLG, Mast K, Oude Rengerink K, Jozwiak M, van Dunne F, Duvekot JJ, van Eyck J, Gaugler-Senden I, de Groot CJM, Franssen MTM, van Gemund N, Langenveld J, de Leeuw JW, Oude Lohuis EJ, Oudijk MA, Papatsonis D, van Pampus M, Porath M, Rombout-de Weerd S, van Roosmalen JJ, van der Salm PCM, Scheepers HCJ, Sikkema MJ, Sporken J, Stigter RH, van Wijngaarden WJ, Woiski M, Mol BWJ, Bloemenkamp KWM; PROBAAT-S project group. Balloon catheter for induction of labor in women with one previous cesarean and an unfavorable cervix. Acta Obstet Gynecol Scand. 2019 Jul;98(7):920-928. doi: 10.1111/aogs.13558. Epub 2019 Mar 7.

    PMID: 30723900BACKGROUND
  • Battarbee AN, Palatnik A, Peress DA, Grobman WA. The Association between Cervical Exam after Ripening with Foley Balloon Catheter and Outcomes of Nulliparous Labor Induction. Am J Perinatol. 2018 Aug;35(10):1001-1005. doi: 10.1055/s-0038-1635091. Epub 2018 Feb 28.

    PMID: 29490397BACKGROUND

Study Officials

  • Jiang Ziyan, Ph.D

    Department of Obstetrics and Gynecology, First Affiliated Hospital of Nanjing Medical University

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Jiang Ziyan, Ph.D

CONTACT

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

January 13, 2022

First Posted

February 18, 2022

Study Start

January 30, 2022

Primary Completion

June 30, 2023

Study Completion

December 30, 2024

Last Updated

April 22, 2022

Record last verified: 2022-04

Data Sharing

IPD Sharing
Will not share

Locations