Oral Contraceptive Pills Versus Levonorgestrel-Releasing Intrauterine System for Niche-Related Abnormal Uterine Bleeding

NCT ID: NCT07229209

Last Updated: 2025-11-25

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

80 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-02-05

Study Completion Date

2025-11-01

Brief Summary

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The purpose of the study is to compare the clinical efficacy and niche morphological changes following treatment with combined oral contraceptive pills (OCPs) versus a levonorgestrel-releasing intrauterine system (LNG-IUS) in women with symptomatic uterine niche-related abnormal uterine bleeding (AUB).

Detailed Description

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After eligibility and consenting, participants were randomized in a 1:1 ratio using a computer-generated block randomization list (block size of six). Allocation concealment was maintained using sequentially numbered, opaque, sealed envelopes, which were opened after consent.

All participants had a transvaginal ultrasound-confirmed uterine niche ≥2 mm in depth. Residual myometrial thickness, niche depth, length, and width were assessed.

* OCP group: Participants received a monophasic combined oral contraceptive pill containing 0.03 mg ethinyl estradiol and 3 mg drospirenone (Technospiron® 0.03/3 mg, Technopharm, Egypt), taken for 21 days starting on day 2 of menstruation for six consecutive cycles.
* LNG-IUS group: Participants received a 52 mg levonorgestrel-releasing intrauterine system (Mirena®, Bayer, Oy Finland), inserted under transvaginal ultrasound guidance within the first three days of menstruation for 6 months.

Both treatments were provided free of charge. Participants could switch to the alternative method upon study completion. Because of the nature of the interventions, blinding was not feasible; hence, the trial was open-label. Assessments were performed at baseline and at 1, 3, and 6 months. Participants recorded:

* Number of days of postmenstrual/intermenstrual spotting
* Total bleeding duration per cycle
* Pelvic pain and dysmenorrhea scores (10-point visual analogue scale)
* Sexual well-being (5-point Likert scale)
* Treatment satisfaction (satisfied/very satisfied vs. other responses)
* Adverse events, complications, and reasons for discontinuation (including LNG-IUS expulsion) At 6 months, transvaginal ultrasonography was repeated to assess residual myometrial thickness, niche depth, length, and width.

Conditions

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Abnormal Uterine Bleeding Cesarean Section Complications Uterine Scar

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Because of the nature of the interventions, blinding was not feasible; hence, the trial was open-label.

Study Groups

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combined oral contraceptive pill group

Participants received a monophasic combined oral contraceptive pill containing 0.03 mg ethinyl estradiol and 3 mg drospirenone (Technospiron® 0.03/3 mg, Technopharm, Egypt), taken for 21 days starting on day 2 of menstruation for six consecutive cycles.

Group Type ACTIVE_COMPARATOR

transvaginal ultrasonography

Intervention Type DIAGNOSTIC_TEST

At baseline and at 6 months after the start of treatment, transvaginal ultrasonography was performed to assess residual myometrial thickness, niche depth, length, and width.

monophasic combined oral contraceptive pill

Intervention Type DRUG

Participants received a monophasic combined oral contraceptive pill containing 0.03 mg ethinyl estradiol and 3 mg drospirenone (Technospiron® 0.03/3 mg, Technopharm, Egypt), taken for 21 days starting on day 2 of menstruation for six consecutive cycles.

levonorgestrel-releasing intrauterine system group

Participants received a 52 mg levonorgestrel-releasing intrauterine system (Mirena®, Bayer, Oy Finland), inserted under transvaginal ultrasound guidance within the first three days of menstruation for 6 months.

Group Type ACTIVE_COMPARATOR

transvaginal ultrasonography

Intervention Type DIAGNOSTIC_TEST

At baseline and at 6 months after the start of treatment, transvaginal ultrasonography was performed to assess residual myometrial thickness, niche depth, length, and width.

52 mg levonorgestrel-releasing intrauterine system

Intervention Type DEVICE

Participants received a 52 mg levonorgestrel-releasing intrauterine system (Mirena®, Bayer, Oy Finland), inserted under transvaginal ultrasound guidance within the first three days of menstruation for 6 months.

Interventions

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transvaginal ultrasonography

At baseline and at 6 months after the start of treatment, transvaginal ultrasonography was performed to assess residual myometrial thickness, niche depth, length, and width.

Intervention Type DIAGNOSTIC_TEST

monophasic combined oral contraceptive pill

Participants received a monophasic combined oral contraceptive pill containing 0.03 mg ethinyl estradiol and 3 mg drospirenone (Technospiron® 0.03/3 mg, Technopharm, Egypt), taken for 21 days starting on day 2 of menstruation for six consecutive cycles.

Intervention Type DRUG

52 mg levonorgestrel-releasing intrauterine system

Participants received a 52 mg levonorgestrel-releasing intrauterine system (Mirena®, Bayer, Oy Finland), inserted under transvaginal ultrasound guidance within the first three days of menstruation for 6 months.

Intervention Type DEVICE

Other Intervention Names

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Technospiron Mirena

Eligibility Criteria

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Inclusion Criteria

* women with at least one previous cesarean section.
* presenting with postmenstrual or intermenstrual bleeding for ≥3 consecutive cycles lasting ≥2 days, and a total bleeding duration \>7 days per cycle.
* All participants had a transvaginal ultrasound-confirmed uterine niche ≥2 mm in depth.

Exclusion Criteria

* pregnancy
* malignancy
* other identifiable causes of abnormal uterine bleeding
* abnormal cervical cytology
* cervicitis
* pelvic inflammatory disease
* endometrial polyps
* uterine fibroids
* contraindications to either combined oral contraceptive pill or levonorgestrel-releasing intrauterine system
* desire for pregnancy
* refusal to participate
Minimum Eligible Age

18 Years

Maximum Eligible Age

45 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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Benha University

OTHER

Sponsor Role lead

Responsible Party

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Ahmed Abdel Latif Ahmed Alnezamy

Lecturer of Obstetrics and Gynecology, Faculty of Medicine

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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AHMED ALNEZAMY, MD

Role: PRINCIPAL_INVESTIGATOR

Lecturer of Obstetrics and Gynecology, Faculty of Medicine, Benha University

Locations

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Benha Univesity Hospital

Banhā, Qalyubia Governorate, Egypt

Site Status

Countries

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Egypt

References

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Stavridis K, Balafoutas D, Vlahos N, Joukhadar R. Current surgical treatment of uterine isthmocele: an update of existing literature. Arch Gynecol Obstet. 2025 Jan;311(1):13-24. doi: 10.1007/s00404-024-07880-w. Epub 2024 Dec 16.

Reference Type RESULT
PMID: 39680143 (View on PubMed)

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.

Reference Type BACKGROUND
PMID: 21858885 (View on PubMed)

Tulandi T, Cohen A. Emerging Manifestations of Cesarean Scar Defect in Reproductive-aged Women. J Minim Invasive Gynecol. 2016 Sep-Oct;23(6):893-902. doi: 10.1016/j.jmig.2016.06.020. Epub 2016 Jul 5.

Reference Type BACKGROUND
PMID: 27393285 (View on PubMed)

Vikhareva Osser O, Valentin L. Clinical importance of appearance of cesarean hysterotomy scar at transvaginal ultrasonography in nonpregnant women. Obstet Gynecol. 2011 Mar;117(3):525-532. doi: 10.1097/AOG.0b013e318209abf0.

Reference Type BACKGROUND
PMID: 21343754 (View on PubMed)

Donnez O. Cesarean scar defects: management of an iatrogenic pathology whose prevalence has dramatically increased. Fertil Steril. 2020 Apr;113(4):704-716. doi: 10.1016/j.fertnstert.2020.01.037.

Reference Type BACKGROUND
PMID: 32228874 (View on PubMed)

Jordans IPM, de Leeuw RA, Stegwee SI, Amso NN, Barri-Soldevila PN, van den Bosch T, Bourne T, Brolmann HAM, Donnez O, Dueholm M, Hehenkamp WJK, Jastrow N, Jurkovic D, Mashiach R, Naji O, Streuli I, Timmerman D, van der Voet LF, Huirne JAF. Sonographic examination of uterine niche in non-pregnant women: a modified Delphi procedure. Ultrasound Obstet Gynecol. 2019 Jan;53(1):107-115. doi: 10.1002/uog.19049.

Reference Type BACKGROUND
PMID: 29536581 (View on PubMed)

Klein Meuleman SJM, Min N, Hehenkamp WJK, Post Uiterweer ED, Huirne JAF, de Leeuw RA. The definition, diagnosis, and symptoms of the uterine niche - A systematic review. Best Pract Res Clin Obstet Gynaecol. 2023 Aug;90:102390. doi: 10.1016/j.bpobgyn.2023.102390. Epub 2023 Jul 15.

Reference Type RESULT
PMID: 37506497 (View on PubMed)

Murji A, Sanders AP, Monteiro I, Haiderbhai S, Matelski J, Walsh C, Abbott JA, Munro MG, Maheux-Lacroix S; International Federation of Gynecology and Obstetrics (FIGO) Committee on Menstrual Disorders and Related Health Impacts. Cesarean scar defects and abnormal uterine bleeding: a systematic review and meta-analysis. Fertil Steril. 2022 Oct;118(4):758-766. doi: 10.1016/j.fertnstert.2022.06.031. Epub 2022 Aug 17.

Reference Type RESULT
PMID: 35985862 (View on PubMed)

You SH. The symptomatic cesarean scar defect with oral contraceptive pills treatment following evacuation of a cesarean scar pregnancy. Taiwan J Obstet Gynecol. 2023 Jan;62(1):181-183. doi: 10.1016/j.tjog.2022.04.012. No abstract available.

Reference Type RESULT
PMID: 36720538 (View on PubMed)

Chen YY, Tsai CC, Lan KC, Ou YC. Preliminary report on the use of a levonorgestrel intrauterine system for the treatment of intermenstrual bleeding due to previous cesarean delivery scar defect. J Obstet Gynaecol Res. 2019 Oct;45(10):2015-2020. doi: 10.1111/jog.14060. Epub 2019 Aug 5.

Reference Type RESULT
PMID: 31381242 (View on PubMed)

Zhang J, Zhu C, Yan L, Wang Y, Zhu Q, He C, He X, Ji S, Tian Y, Xie L, Liang Y, Xia W, Mol BW, Huirne JAF. Comparing levonorgestrel intrauterine system with hysteroscopic niche resection in women with postmenstrual spotting related to a niche in the uterine cesarean scar: a randomized, open-label, controlled trial. Am J Obstet Gynecol. 2023 Jun;228(6):712.e1-712.e16. doi: 10.1016/j.ajog.2023.03.020. Epub 2023 Mar 17.

Reference Type RESULT
PMID: 36935068 (View on PubMed)

Zhang X, Yang M, Wang Q, Chen J, Ding J, Hua K. Prospective evaluation of five methods used to treat cesarean scar defects. Int J Gynaecol Obstet. 2016 Sep;134(3):336-9. doi: 10.1016/j.ijgo.2016.04.011. Epub 2016 Jun 30.

Reference Type RESULT
PMID: 27473332 (View on PubMed)

Zheng F, Chen S, Yang W, Li J, Huang Q, Qin H, Wei J, Lin J. Comparison of the efficacy of oral contraceptives and levonorgestrel intrauterine system in intermenstrual bleeding caused by uterine niche. Ginekol Pol. 2024;95(8):621-626. doi: 10.5603/GP.a2023.0067. Epub 2023 Jul 7.

Reference Type RESULT
PMID: 37417378 (View on PubMed)

Other Identifiers

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RC10-2-2025

Identifier Type: -

Identifier Source: org_study_id

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