Uterocervical Angle Versus Cervical Length as a Predictor of Labor Induction in Term Singleton Pregnancy

Induction of labor is frequently performed in all obstetric clinics. Failed IOL has been defined in many different ways.Bishop scoring, which is a traditional and subjective method, is more frequently evaluated with cervical length, which has taken its place in preterm labor, and various ultrasonographic evaluations such as Uterocervical angle (UCA), Posterior cervical angle (PCA), cervical elastography, transvulvar ultrasonography, which have recently increased in popularity, have gained importance and led us to evaluate these parameters in our clinic. The relationship between the angles between the uterus and cervix and labor has been known for some time.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Labor (Obstetrics)--Complications

Age range

18 year–40 year

Sex eligibility

Female

Study type

Observational

Primary location

Etlik Zubeyde Hanım Women's Health Education Hospital

Ankara, 06000, Turkey (Türkiye)

About this study

Induction of labor is frequently performed in all obstetric clinics for various indications, with a worldwide spectrum ranging from 1.4 to 35%. Failed IOL has been defined in many different ways. It has been defined as a dilatation of less than 4 cm despite administration of oxytocin for 12 hours±3 hours (target 200-225 MVU or 3 contractions/10 min), induction of labor with oxytocin for at least 12-18 hours (after rupture of membranes) and a latent phase lasting 24 hours or longer, primarily considering fetal and maternal well-being. In some sources, it is defined as failure to achieve regular (e.g. every 3 minutes) uterine contractions and cervical changes with artificial rupture of membranes after at least 6-8 hours of oxytocin maintenance dose. For this reason, various subjective & ultrasonographic parameters used to predict induction success are of great importance for the evaluation of the cervix. Bishop scoring, which is a traditional and subjective method, is more frequently evaluated with cervical length, which has taken its place in preterm labor, and various ultrasonographic evaluations such as Uterocervical angle (UCA), Posterior cervical angle (PCA), cervical elastography, transvulvar ultrasonography, which have recently increased in popularity, have gained importance and led us to evaluate these parameters in our clinic.

The relationship between the angles between the uterus and cervix and labor has been known for some time.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

37 weeks and older Nulliparity Live, singular Verteks presentation Cervical opening<3 cm Bishop score<7 Patients not in active action

Exclusion criteria

Presence of contraindications to vaginal delivery (pls previa, detached pls...)
History of previous uterine surgery
Multiple pregnancies
Non-vertex presentation
Uncontrolled HT Uncontrolled DM
Fetal distress
Macrosomic fetus Patients in active labor

Treatment and study plan

Uterocervical angle

Procedure

With the patient in the lithotomy position and empty bladder, care was taken to avoid applying pressure to the cervix with the transvaginal probe. The cervix was aligned in the midline, and the endocervical canal was visualized throughout its length.During cervical measurement, care was taken to ensure that the internal os, external os, and entire endocervical canal were visible in the same image. With the endocervical canal, external os, and internal os linearly displayed on the screen, the angle between the endocervical canal, anterior and posterior uterine segment was measured using the ultrasound's "angle measurement" feature.For the measurement of the uterocervical angle, the first line of the angle was defined along the endocervical canal used for measuring cervical length, and the second line was drawn from the internal os along the anterior uterine segment for a minimum of two centimeters. The angle between these two lines was recorded as the uterocervical angle in the form.

Other names: Posterior cervical angle

Primary outcomes

The efficacy of uterocervical angle

Time frame: 2 days

The efficacy of uterocervical angle in predicting labor induction success in nulliparous patients at term.

Sponsors and collaborators

Lead sponsor

Etlik Zubeyde Hanım Women's Health Care, Training and Research Hospital

Other

Registry information

Official study title

Uterocervical and Posterior Cervical Angle Versus Cervical Length and Bishop's Score as a Predictor of Labor Induction in Term Singleton Pregnancy: a Prospective Study

Important dates

Study start: 2024
Primary completion: 2024
Study completion: 2024
First posted: Aug 16, 2024
Registry last updated: Aug 20, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed