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Breech Fetal PresentationREVERSONCT06593795

Ultrasound Parameters for the Outcome Prediction of External Cephalic Version for Fetuses with Breech Presentation

An observational study of Breech Fetal Presentation and Breech Presentation of Fetus with Successful Version, run by Fondazione Policlinico Universitario Agostino Gemelli IRCCS.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record

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Trial summary

This study aims to evaluate possible predictors for the successful od external cephalic version (ECV), a procedure that is indicated in your case due to breech presentation of your baby and your desire to avoid cesarean section. Read more about this study

Who is it for?
Ages 18 years and older, women only
What is being tested?
ultrasound
Type of treatment
Surgery or procedure
How many people
120 participants
Where
No sites listed yet
Study dates
Oct 2024to Oct 2026
Phase
Observational

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • Women only
  • No healthy volunteers
  • Adult, Older adult

Study population: We will consecutively enroll all pregnant women at the term of gestation with a fetal breech presentation undergoing ECV attempt after counseling at Fondazione Policlinico Universitario Agostino Gemelli IRCCS of Rome, satisfying the inclusion criteria.

Who may be able to join

  • Age ≥18 y.o.;
  • Pregnant women with a diagnosis of fetal breech presentation eligible and desirous for ECV;
  • Singleton;
  • At term (≥ 37 weeks);
  • Breech presentation;
  • No previous uterine scars or other indications for elective C-section;
  • Signed written informed consent to study participation.

Who cannot join

  • Age \<18 y.o.;
  • Preterm gestational age;
  • Multiple pregnancies;
  • Indications for elective cesarean section;
  • Incomplete obstetrical data;
  • Refusal to provide informed consent.
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  • Desire to an elective C-Section
  • Controindications for ECV or vaginal delivery (placental abruption, placenta previa, uterine malformations)
  • Reduction of amniotic fluid (AFI \<4 cm)
  • Uterine contractions
  • Vaginal bleeding
  • Premature rupture of membranes
  • Nonreassuring fetal heart rate patterns before the procedure.

Trial locations and contacts

No sites are listed yet. Contact the study team or a site near you to ask about taking part.

About this study

Official title: Prediction of External Cephalic Version Success in Case of Breech Presentation At Term of Pregnancy: a Prospective Observational Study

This study aims to evaluate possible predictors for the successful od external cephalic version (ECV), a procedure that is indicated in your case due to breech presentation of your baby and your desire to avoid cesarean section. Before the procedure, a detailed ultrasound scan will be performed to measure several parameters. After the procedure we will collect data about the duration, outcome and eventual complications of ECV.

Read the detailed description

Pregnant women with a diagnosis of fetal breech presentation, desirous of an attempt of ECV after counseling and written consent and hospitalized for the procedure will be consecutively enrolled. The following anonymous data will be recorded:

  • Demographic and anthropometric data (i.e., age (y), ethnicity, height (m), weight (kg), BMI);
  • Parity
  • Gestational Age (weeks + days)

Before ECV attempt, the following evaluations will be performed:

  • Vaginal examination to evaluate the cervical dilatation and the level of presenting part (floating or not floating)
  • Fetal transvaginal ultrasound reporting:
  • biometry (BPD, HC, AC, FL, EFW);
  • Occiput position (right, left);
  • Back position (anterior, posterior, right, left);
  • Breech variant (footling, frank, complete);
  • Fetal leg posture (extended, flexed)
  • Placental localization;
  • Amniotic Fluid Index (AFI);
  • Fore-bag of amniotic fluid;
  • Eventual presence of nuchal cords;
  • Fetal head ballottement (yes, no);
  • Occiput-spine angle (see Figure 1)

Then, all the participants will undergo a transabdominal ultrasound-guided ECV in a semi-sitting position by the same expert operator (B.C.). After the procedure, the following data will be collected:

  • Success (yes, no)
  • Duration of the procedure (min);
  • Direction of fetal flip in case of success (frontside flip, backside flip)
  • Pain perception in Numerical Rating Scale (NRS) (1-10);
  • Reason for terminating the procedure (success, failure, pain, uterine contractions, non-reassuring fetal conditions)
Being tested
ultrasound
Keywords
breech, external cephalic version, ultrasound, c-section
Medical subject headings
Breech Presentation

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • ultrasoundProcedure or surgery

    before ECV procedure, an ultrasound will be performed to evaluate

    • fetal biometry (BPD, HC, AC, FL, EFW);
    • Occiput position (right, left);
    • Back position (anterior, posterior, right, left);
    • Breech variant (footling, frank, complete);
    • Fetal leg posture (extended, flexed)
    • Placental localization;
    • Amniotic Fluid Index (AFI);
    • Fore-bag of amniotic fluid;
    • Eventual presence of nuchal cords;
    • Fetal head ballottement (yes, no);
    • Occiput-spine angle These parameters will be compared to find predictive factors for successful ECV
Study groups in NCT06593795
Study groupRoleWhat they receive
Group ECVPregnant women with a fetus in breech presentation at term of pregnancy undergoing an external cephalic version (ECV) maneuver. This procedure is aimed to induce fetal cephalic position allowing vaginal delivery instead of cesarean section
Receives: Procedure: ultrasound

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. To evaluate ECV success rate.

    to evaluate clinical and ultrasound parameters possibly predictive of the success of ECV. This will allow the creation of a predictive model for adequate counseling for the women undergoing the procedure for the cephalic version of fetuses in breech presentation at term of pregnancy

    Measured: during the procedure

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted19 Sep 2024
  2. Study startOct 2024 (estimated)
  3. Primary completionOct 2025 (estimated)
  4. Study completionOct 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
120 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06593795
Sponsor's protocol ID
6366
Acronym
REVERSO
Status last verified
Feb 2024
First submitted
10 Sep 2024
Last updated
19 Sep 2024
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: this is an internal database

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