Interest of Cervical Dilators in Second Trimester Termination of Pregnancy (DILATOP)

August 29, 2025 updated by: Assistance Publique - Hôpitaux de Paris

Interest of Cervical Dilators in the Induction of Labor in Second Trimester Medical Termination of Pregnancy.

The purpose of this study is to evaluate whether the use of cervical dilators for cervical ripening in case of second trimester medical termination of pregnancy (TOP) is effective to reduce duration of labor.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Termination of pregnancy is a distressing and painful procedure for women. The use of cervical dilators could shorten the duration of labor but can generate more pain. The investigators will compare two procedures of induction of labor for second trimester termination of pregnancy: one with the use of oral prostaglandins (misoprostol) only and one with the exact same procedure preceded by cervical ripening with hygroscopic cervical dilators. Epidural analgesia will be effective previously to the placement of cervical dilators and the first tablet of misoprostol. Efficacy will be determined based on the proportion of women achieving vaginal delivery within 12 hours. The beginning of labor will be defined as the first administration of misoprostol tablets in both groups.

The investigators will also evaluate safety by collecting hemorrhage endometritis, cervical tear. The investigators will compare psychological impact of these procedures, measured by the impact of event scale and acceptability 1 to 4 months later.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
355

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
      • Paris, France, 75014
        • Maternité Port Royal

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Termination of pregnancy requested by the patient and accepted by the weekly multidisciplinary counselling of fetal medicine
  • gestational age between 15 and 27 weeks and 6 days,
  • single pregnancy,
  • major patient,
  • French-speaking woman,
  • Patient with health insurance.

Exclusion Criteria:

  • Termination of pregnancy by surgical technique
  • cicatricial uterus
  • premature rupture of membranes
  • chorioamnionitis
  • multiple pregnancy
  • placenta praevia
  • myoma praevia
  • uterine malformation
  • unstable maternal pathology
  • psychiatric pathology
  • contraindication to mifepristone: severe asthma, adrenal insufficiency, porphyria, corticotherapy.
  • contraindication to misoprostol: hypersensitivity to prostaglandins.
  • contraindication to epidural analgesia: hemostasis disorder, spinal or medullary anomaly.
  • Bishop score > or = to 7 at arrival in birth room

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Supportive Care
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
No Intervention: Without cervical dilator
Induction of labour by oral of 400µg of misoprostol each 3 hours.
Experimental: With cervical dilator
Induction of labour by cervical placement of hygroscopic dilators for 3 hours and oral of 400µg tablets of misoprostol each 3 hours.
Other: With cervical dilatator
Induction of labour by cervical placement of hygroscopic dilators (Dilapan-S Hygroscopic cervical dilator )

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Proportion of women achieving vaginal delivery within 12 hours
Time Frame: 12 hours
The beginning of labor will be defined as the placement of the first tablets of misoprostol in both groups.
12 hours

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Induction-to-amniotomy interval
Time Frame: 12 hours
Time between the first placement of misoprostol tablets and artificial amniotomy.
12 hours
Induction-to-delivery interval
Time Frame: 24 hours
Time between the first placement of misoprostol tablets and delivery.
24 hours
Failure in induction of labor
Time Frame: 24 hours
Proportion of women not achieving vaginal delivery within 24 hours
24 hours
Pain assessment at the beginning of the procedure
Time Frame: Hour 0
Pain assessment with numerical scale at the placement of dilators and the first misoprostol tablets
Hour 0
Pain assessment of the whole procedure of TOP
Time Frame: 48 hours
Pain assessment of the whole procedure by numerical scale at discharge of the hospital
48 hours
Distress assessment at discharge after TOP
Time Frame: 4 months
Distress assessment at discharge after TOP measured by impact of event scale revised(IES-R)
4 months
Assessment of acceptability of the whole procedure of TOP
Time Frame: 4 months
Acceptability measured by the proportion of women who would opt for the same procedure after TOP
4 months
number of complications.
Time Frame: 4 months

Hyperthermia> 40 ° C, septicemia, endometritis defined by a fever associated with pelvic pain, positive bacteriological vaginal specimen and a biological infectious syndrome (leukocytosis greater than 15 000 / mm3 and C-Reactive Protein > 10 IU / mL).

  • Cervical injury.
  • Complications of prolonged decubitus: bedsores, thrombo-embolic complications.
  • Uterine rupture.
  • Post-partum hemorrhage defined by estimated blood losses greater than 500 mL.
4 months
Duration of hospitalization.
Time Frame: 48 hours
Duration of hospitalization between admission and discharge and in delivery room.
48 hours
Cost of the procedure
Time Frame: 4 months
Assessment of the whole procedure costs of TOP, including potential complications.
4 months
Among nullipara, proportion of women achieving vaginal delivery within 12 hours
Time Frame: 12 hours
The beginning of labor will be defined as the placement of the first tablets of misoprostol in both groups.
12 hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Assistance Publique - Hôpitaux de Paris

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Institut National de la Santé Et de la Recherche Médicale, France
Unité de Recherche Clinique Necker Cochin, France

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Vassilis Tsatsaris, MD, PhD, Assistance Publique - Hôpitaux de Paris

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 14, 2017

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
June 30, 2020

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 24, 2020

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 13, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 19, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 21, 2017

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 5, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 29, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2025

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • P160908

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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