Clinical trial NCT06558500: Uterocervical Angle Versus Cervical Length as a Predictor of Labor Induction in Term Singleton Pregnancy
Official 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
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Labor (Obstetrics)--Complications
Keywords: Nulliparous
labor induction
posterior cervical angle
uterocervical angle
cervical length
Lead sponsor: Etlik Zubeyde Hanım Women's Health Care, Training and Research Hospital
Sponsor class: OTHER
First posted: 2024-08-16
Enrollment: 140
Sex: FEMALE
Minimum age (years): 18
Maximum age (years): 40
Standard ages: ADULT
Accepts healthy volunteers: yes
Observational model: CASE_CONTROL
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: This prospective observational study was conducted at the Department of Obstetrics and Gynecology, Ankara Etlik Hospital, between June 2024 and August 2024, on 140 term pregnancies admitted for maternal or fetal reasons , planned for labor induction.

Brief summary: 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.

Detailed description: 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.

Eligibility criteria: 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

Primary outcomes:
measure: The efficacy of uterocervical angle
timeFrame: 2 days
Secondary outcomes:
Other outcomes:
Locations:
city: Ankara
country: Turkey
facility: Etlik Zubeyde Hanım Women's Health Education Hospital
Study officials:
affiliation: Etlik Zübeyde Hanım EAH
name: Ali Turhan ÇAĞLAR
role: STUDY_CHAIR
References: