Comparing Decidual Inclusion vs. Exclusion in Uterine Suture Techniques During Cesarean Section to Improve Scar Thickness and Reduce Isthmocele Risk in Primiparous Women

Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexFemale
Age18+
SponsorKantonsspital Baden

About this trial

This study compares two ways of closing the uterus during cesarean delivery. In one group, the decidual layer near the uterine cavity is included in the suture. In the other group, this layer is left out. The study will examine whether these two methods differ in how well the uterine scar heals 6 to 9 months after surgery.

Women having an elective cesarean delivery will be randomly assigned to one of the two closure methods. Scar healing will be assessed by ultrasound after delivery. The goal is to determine whether one method is associated with better cesarean scar healing and fewer scar defects.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Singleton, term pregnancy

Elective cesarean section before labor onset or membrane rupture

Maternal age >18 years

Ability to provide informed consent

Disqualifiers

Placenta previa

Maternal substance abuse or infection

Suspected placenta accreta

Diabetes

Trial design

Design model

Parallel

Treatments tested in this trial

  • Single-Layered Non-Locked Closure with Decidual Inclusion

    Procedure/Surgery

    During the cesarean section, the uterine incision is closed with a single-layered, non-locked suture. In this technique, the decidua (the uterine lining) is included in the closure. This means that the endometrial cells are part of the suture, potentially influencing the healing process of the uterine scar. Goal: The idea is that including the decidua may promote better healing and scar formation, reducing the risk of complications such as isthmocele and improving long-term uterine health.

  • Single-Layered Non-Locked Closure with Decidual Sparing

    Procedure/Surgery

    Procedure: In this technique, the uterine incision is also closed using a single-layered non-locked suture, but the decidua is excluded from the closure. The suture is placed only through the myometrium (muscle layer) of the uterus, leaving the decidua out of the scar tissue. Goal: The intent is to observe if sparing the decidua results in better scar healing and a lower risk of isthmocele formation, as well as fewer long-term complications.

Treatment groups

374 Participants
are divided into 2 treatment groups
Group A: Decidual Inclusion ClosureExperimental treatment 1 intervention
Group B: Decidual Sparing ClosureExperimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Proportion of participants with a cesarean scar niche measured by ultrasound

Presence of a cesarean scar niche, defined as a myometrial indentation at the cesarean scar site with a depth of at least 2 mm, assessed by postoperative ultrasound. The outcome will be reported as the proportion of participants with a niche in each treatment group.

Time frame
6 to 9 months post-operation

Secondary outcomes

1

Operative time

Operative time in minutes

Time frame
Periprocedural
2

Need for additional sutures for hemostasis

Need for additional hemostatic sutures, yes (how many: \_\_ Number) /no

Time frame
Periprocedural
3

Length of hospital stay

Length of postoperative hospital stay in days

Time frame
Postoperative day 2
4

Postoperative pain intensity on the 11-point Numeric Rating Scale

Pain intensity assessed using an 11-point Numeric Rating Scale ranging from 0 to 10, where 0 indicates no pain and 10 indicates the worst imaginable pain. Higher scores indicate worse pain.

Time frame
Postoperative day 2

Other outcomes

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