NCT04747418

Brief Summary

Data regarding fertility following niche repair is limited. It has been reported that a niche can reduce the chances of embryo implantation and may lead to spontaneous miscarriages if the implantation is close to or in the niche. One possible theory refers to inflammatory process at the area of the niche that harms the endometrial environment. Due to the aforementioned, the aim of our study is to compare the inflammatory characteristics of women with cesarean uterine scar to those without.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
163

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started Feb 2021

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

January 29, 2021

Completed
3 days until next milestone

Study Start

First participant enrolled

February 1, 2021

Completed
9 days until next milestone

First Posted

Study publicly available on registry

February 10, 2021

Completed
4.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 7, 2025

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

April 7, 2025

Completed
Last Updated

April 8, 2025

Status Verified

April 1, 2025

Enrollment Period

4.2 years

First QC Date

January 29, 2021

Last Update Submit

April 7, 2025

Conditions

Keywords

Cesarean Section ComplicationsFertility DisorderInflammatory characteristics

Outcome Measures

Primary Outcomes (1)

  • Level of inflammatory cytokines ( Granulocyte Macrophage colony stimulating factor(GM-CSF), Interferone-GAMMA, Interleukin(IL)-1,IL-2,IL-5,IL-6,IL-7,IL13,IL-15, IL-17, IL-22, IL-23,IL-31,IL-33,IL-36, Tumor Necrosis Factor (TNF) -ALPHA )

    All parameters will be evaluated in picogram/milliliter

    Through study completion, an estimated period of 1 year

Secondary Outcomes (4)

  • Niche characteristics-Residual myometrial thickness

    During sonographic evaluation performed immediately following diagnostic hysteroscopy

  • Niche characteristics-Adjacent myometrial thickness

    During sonographic evaluation performed immediately following diagnostic hysteroscopy

  • Niche characteristics-Depth

    During sonographic evaluation performed immediately following diagnostic hysteroscopy

  • Niche characteristics-Length

    During sonographic evaluation performed immediately following diagnostic hysteroscopy

Study Arms (2)

Study Group: Women with low segment uterine scar following cesarean delivery

Women with low segment uterine scar following cesarean delivery, with no other abnormalities observed during diagnostic hysteroscopy

Procedure: Diagnostic HysteroscopyProcedure: Trans-vaginal ultrasound

Cohort Group: Women with no uterine scar

Women with no uterine scar, with no other abnormalities observed during diagnostic hysteroscopy

Procedure: Diagnostic Hysteroscopy

Interventions

Collection of first 5 cc of normal saline from the output port during diagnostic hysteroscopy

Cohort Group: Women with no uterine scarStudy Group: Women with low segment uterine scar following cesarean delivery

Trans vaginal ultrasound performed immediately following the diagnostic hysteroscopy ( as sonohysterography)

Study Group: Women with low segment uterine scar following cesarean delivery

Eligibility Criteria

Age18 Years - 45 Years
Sexfemale
Healthy VolunteersYes
Age GroupsAdult (18-64)
Sampling MethodNon-Probability Sample
Study Population

Women with low segment uterine scar following cesarean delivery ( Study group ) and women with no uterine scar ( Controls), that have no abnormal finding on diagnostic hysterocopy.

You may qualify if:

  • Fertility age 18-45
  • No abnormal finding during hysteroscopy

You may not qualify if:

  • Women with other uterine scars (following myomectomy, T/J scar)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Sheba Medical Center

Ramat Gan, Israel

Location

Related Publications (13)

  • van der Voet LF, Bij de Vaate AM, Veersema S, Brolmann HA, Huirne JA. Long-term complications of caesarean section. The niche in the scar: a prospective cohort study on niche prevalence and its relation to abnormal uterine bleeding. BJOG. 2014 Jan;121(2):236-44. doi: 10.1111/1471-0528.12542.

  • Naji O, Abdallah Y, Bij De Vaate AJ, Smith A, Pexsters A, Stalder C, McIndoe A, Ghaem-Maghami S, Lees C, Brolmann HA, Huirne JA, Timmerman D, Bourne T. Standardized approach for imaging and measuring Cesarean section scars using ultrasonography. Ultrasound Obstet Gynecol. 2012 Mar;39(3):252-9. doi: 10.1002/uog.10077.

  • Roberge S, Boutin A, Chaillet N, Moore L, Jastrow N, Demers S, Bujold E. Systematic review of cesarean scar assessment in the nonpregnant state: imaging techniques and uterine scar defect. Am J Perinatol. 2012 Jun;29(6):465-71. doi: 10.1055/s-0032-1304829. Epub 2012 Mar 7.

  • Vervoort AJ, Uittenbogaard LB, Hehenkamp WJ, Brolmann HA, Mol BW, Huirne JA. Why do niches develop in Caesarean uterine scars? Hypotheses on the aetiology of niche development. Hum Reprod. 2015 Dec;30(12):2695-702. doi: 10.1093/humrep/dev240. Epub 2015 Sep 25.

  • Wang CB, Chiu WW, Lee CY, Sun YL, Lin YH, Tseng CJ. Cesarean scar defect: correlation between Cesarean section number, defect size, clinical symptoms and uterine position. Ultrasound Obstet Gynecol. 2009 Jul;34(1):85-9. doi: 10.1002/uog.6405.

  • Brown K, Tkacz Z. Hysteroscopic and laparoscopic management of caesarean scar (niche) defects in symptomatic patients. J Obstet Gynaecol. 2018 Jul;38(5):730. doi: 10.1080/01443615.2018.1444394.

  • Vervoort AJ, Van der Voet LF, Witmer M, Thurkow AL, Radder CM, van Kesteren PJ, Quartero HW, Kuchenbecker WK, Bongers MY, Geomini PM, de Vleeschouwer LH, van Hooff MH, van Vliet HA, Veersema S, Renes WB, van Meurs HS, Bosmans J, Oude Rengerink K, Brolmann HA, Mol BW, Huirne JA. The HysNiche trial: hysteroscopic resection of uterine caesarean scar defect (niche) in patients with abnormal bleeding, a randomised controlled trial. BMC Womens Health. 2015 Nov 12;15:103. doi: 10.1186/s12905-015-0260-8.

  • van der Voet LF, Vervoort AJ, Veersema S, BijdeVaate AJ, Brolmann HA, Huirne JA. Minimally invasive therapy for gynaecological symptoms related to a niche in the caesarean scar: a systematic review. BJOG. 2014 Jan;121(2):145-56. doi: 10.1111/1471-0528.12537.

  • Hemminki E. Impact of caesarean section on future pregnancy--a review of cohort studies. Paediatr Perinat Epidemiol. 1996 Oct;10(4):366-79. doi: 10.1111/j.1365-3016.1996.tb00062.x.

  • Naji O, Wynants L, Smith A, Abdallah Y, Saso S, Stalder C, Van Huffel S, Ghaem-Maghami S, Van Calster B, Timmerman D, Bourne T. Does the presence of a Caesarean section scar affect implantation site and early pregnancy outcome in women attending an early pregnancy assessment unit? Hum Reprod. 2013 Jun;28(6):1489-96. doi: 10.1093/humrep/det110. Epub 2013 Apr 12.

  • Gurol-Urganci I, Bou-Antoun S, Lim CP, Cromwell DA, Mahmood TA, Templeton A, van der Meulen JH. Impact of Caesarean section on subsequent fertility: a systematic review and meta-analysis. Hum Reprod. 2013 Jul;28(7):1943-52. doi: 10.1093/humrep/det130. Epub 2013 May 3.

  • Vissers J, Hehenkamp W, Lambalk CB, Huirne JA. Post-Caesarean section niche-related impaired fertility: hypothetical mechanisms. Hum Reprod. 2020 Jul 1;35(7):1484-1494. doi: 10.1093/humrep/deaa094.

  • Vitale SG, Ludwin A, Vilos GA, Torok P, Tesarik J, Vitagliano A, Lasmar RB, Chiofalo B. From hysteroscopy to laparoendoscopic surgery: what is the best surgical approach for symptomatic isthmocele? A systematic review and meta-analysis. Arch Gynecol Obstet. 2020 Jan;301(1):33-52. doi: 10.1007/s00404-020-05438-0. Epub 2020 Jan 27.

MeSH Terms

Interventions

Hysteroscopy

Intervention Hierarchy (Ancestors)

Diagnostic Techniques, Obstetrical and GynecologicalDiagnostic Techniques and ProceduresDiagnosisEndoscopyDiagnostic Techniques, SurgicalMinimally Invasive Surgical ProceduresSurgical Procedures, OperativeObstetric Surgical ProceduresGynecologic Surgical ProceduresUrogenital Surgical Procedures

Study Officials

  • Aya M Mohr-Sasson, M.D

    Sheba Medical Center, Tel-Hashomer

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
CASE CONTROL
Time Perspective
CROSS SECTIONAL
Sponsor Type
OTHER GOV
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

January 29, 2021

First Posted

February 10, 2021

Study Start

February 1, 2021

Primary Completion

April 7, 2025

Study Completion

April 7, 2025

Last Updated

April 8, 2025

Record last verified: 2025-04

Locations