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Uterine Scratching in Intra-Uterine Insemination

The Impact of Uterine Scratching Prior to Intra-Uterine Insemination in Unexplained Infertility, a Randomized Controlled Trial

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03828786
Enrollment
394
Registered
2019-02-04
Start date
2018-07-15
Completion date
2024-03-30
Last updated
2025-03-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Infertility, Unexplained Infertility

Keywords

intra-uterine insemination, endometrial injury, scratching

Brief summary

This study will evaluate the potential benefits of uterine injury during the follicular phase of an intra-uterine insemination cycle on the rate of ongoing pregnancy during the first trimester ultrasound.

Detailed description

Infertility is defined as the absence of conception after a year of unprotected intercourse. In 10 to 30 % of patients, the cause of the infertility is unknown. An emerging practice in unexplained infertility has been to cause a uterine trauma prior to treatment. This is done by doing a small endometrial scratch with a pipelle. This intervention has been study in IVF and has been shown beneficial. Theoretically, the uterine scratching could increase the immune response and the vascularization of the endometrium which could help in embryo implantation. However, there is very few data concerning scratching in intrauterine insemination. The studies are mostly small studies and the results are often contradictory. In this randomized controlled trial, the investigators will evaluate the effect of uterine scratching during the follicular phase of an insemination cycle on the pregnancy rate of a large cohort of unexplained infertile couples.

Interventions

Endometrial Biopsy by aspiration with a pipelle

Sponsors

Clinique Ovo
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 41 Years
Healthy volunteers
Yes

Inclusion criteria

* Unexplained infertility for over 12 months if under 35 years old or over 6 months if 35 years old and above. * At least one permeable tube on hysterosonography or hysterosalpingography within the last 2 years or vaginal delivery in the last 3 years. * Antral follicular count over 5. * Normal or mild male factor. * Normal uterine cavity. * An IUI prescription.

Exclusion criteria

* Polycystic ovary syndrome with irregular menstrual cycles over 45 days * Severe endometriosis * IUI with Donor sperm * Patient with invasive intra-uterine procedure in the last 3 months. * Contraindication to endometrial biopsy.

Design outcomes

Primary

MeasureTime frameDescription
Efficacy - Pregnancy Rate measured during the first trimester ultrasound.13 weeksOngoing pregnancy during the first trimester ultrasound after an intrauterine insemination (IUI) cycle.

Secondary

MeasureTime frameDescription
Efficacy - Secondary pregnancy rate.6 monthsOngoing pregnancy during the first trimester ultrasound in the 3 IUI cycles following a scratching
Safety - Side effects6 months for all 3 intrauterine inseminationEvaluate side effects related to the intrauterine scratching
Safety - Complications6 months for all 3 intrauterine inseminationEvaluate complications related to intrauterine scratching

Countries

Canada

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026