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Does Follicular Flushing Improve the Outcome in Monofollicular IVF Therapy? (Flushing)

Primary Purpose

Infertility

Status
Completed
Phase
Phase 3
Locations
Study Type
Interventional
Intervention
follicular flushing
no follicular flushing
Sponsored by
Insel Gruppe AG, University Hospital Bern
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Infertility

Eligibility Criteria

18 Years - 42 Years (Adult)FemaleAccepts Healthy Volunteers

Inclusion Criteria:

  • Indication for in vitro Fertilisation
  • Desire of natural cycle IVF and ICSI fertilisation
  • Regular menstrual cycle, both ovaries can be reached for follicule aspiration
  • 18-42 years
  • size of the follicle ≥16mm
  • max. 2 previous embryo transfers

Exclusion Criteria:

  • <18 and >42 years
  • Preterm ovulation
  • >= 3 previous embryo transfers

Sites / Locations

    Arms of the Study

    Arm 1

    Arm 2

    Arm Type

    Experimental

    Active Comparator

    Arm Label

    follicular flushing group

    aspiration group

    Arm Description

    Monofollicular IVF therapy with follicular flushing up to five times after aspiration of the follicule at the time to the oocyte pick-up

    Monofollicular IVF therapy with aspiration only at the time of the oozyte pick-up

    Outcomes

    Primary Outcome Measures

    Proportion of mature oocytes retrieved

    Secondary Outcome Measures

    Number of flushings necessary to retrieve the oocyte (intervention arm only)
    Fertilisation rate
    Embryo quality (BLEFCO and ASEBIR score) on day 2 after fertilisation
    Transfer rate
    Pregnancy rate
    Pain during intervention measured on a VAS scale
    Time used for intervention

    Full Information

    First Posted
    December 12, 2015
    Last Updated
    July 17, 2020
    Sponsor
    Insel Gruppe AG, University Hospital Bern
    Collaborators
    University of Bern
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    1. Study Identification

    Unique Protocol Identification Number
    NCT02641808
    Brief Title
    Does Follicular Flushing Improve the Outcome in Monofollicular IVF Therapy?
    Acronym
    Flushing
    Official Title
    Does Follicular Flushing Improve the Outcome in Monofollicular IVF Therapy?
    Study Type
    Interventional

    2. Study Status

    Record Verification Date
    July 2020
    Overall Recruitment Status
    Completed
    Study Start Date
    August 1, 2016 (Actual)
    Primary Completion Date
    July 17, 2020 (Actual)
    Study Completion Date
    July 17, 2020 (Actual)

    3. Sponsor/Collaborators

    Responsible Party, by Official Title
    Principal Investigator
    Name of the Sponsor
    Insel Gruppe AG, University Hospital Bern
    Collaborators
    University of Bern

    4. Oversight

    Data Monitoring Committee
    Yes

    5. Study Description

    Brief Summary
    Follicular aspiration as well as follicular flushing are standardized techniques and have been practiced in polyfollicular IVF (in vitro fertilization) therapy for years. Monofollicular IVF therapy is a standard technique as well. IVF can be done in natural cycles or with a minimal stimulation with clomifen citrate to achieve a monofollicular response. Our study aims to compare follicular aspiration and follicular flushing in monofollicular stimulation. First the investigators want to answer the question whether flushing is beneficial for the oocyte yield. In case of a positive result the investigators want to establish a recommendation about the optimal number of flushings taking into account the duration of the procedure and the pain during manipulation.
    Detailed Description
    There is an increase in mono- and oligofollicular IVF therapies worldwide. With the increase in oligo- and monofollicular IVF techniques, a re-evaluation of the aspiration techniques is necessary. The lower the number of mature follicules, the higher the need to obtain the oocyte. The number of embryos obtained is dependent on the number of oocytes retrieved (Wood 2000). Von Wolff et al. showed (2013) that, three flushings almost doubled not only the number of aspirated oocytes but also the transfer rate in monofollicular IVF. Oocytes, collected by flushing, were as mature and fertilizable as those aspirated without flushing. Mendez Lozano et al. performed an aspiration without flushing in 79 women and with triple flushing in 47 women. They were stimulated with HMG (human menopausal gonadotropin) and controlled with GnRH (Gonadotropin releasing hormone) antagonists in a semi natural cycle IVF. The percentage of patients with a good embryo was 28.8% in the group without flushing and 37.8% in the group with flushing; however, the difference was not significant. Women with an indication for an IVF therapy and the wish of natural cycle IVF are randomized to the intervention (flushing) or control arm (no flushing). In natural cycle IVF, there is no gonadotropin stimulation. Clomifen citrate (25mg e.g. Serophene®, Merck Serono, from the 6th day of cycle) or singles doses of GnRH-antagonists (e.g. Orgalutran®, MSD, Merck Sharp & Dohme AG) are only given to avoid premature ovulation. Once maturity of the follicle is achieved (follicle size ≥16mm), 5000IU urinary human chorionic gonadotropin (uHCG) is used to trigger ovulation. Oocyte pickup (OPU) is performed 36.5 (36-37) hours after ovulation induction. No anesthesia is used for this procedure. For the aspiration 19 gauge single lumen needles are used. After the aspiration the needle is removed and flushed. Depending on randomisation the follicle is not flushed (group A) or flushed adapted to follicule size (16mm 2ml, 18mm 3ml, and 20mm 4ml etc.) up to five times with (e.g.flushing media with heparin (SynVitro® Flush, Origio, Berlin, Germany). In case more than 1 follicle develops, only the largest follicle is analysed. The flushings are collected each in a separate collecting tube (group B). The analysis of the collected oocytes is performed in the IVF lab. The aspirated fluid is analyzed in the IVF lab by the independent biologist. Pain is monitored by VAS (visual analogue scale) score and time of intervention is measured. In the IVF lab the oocytes are fertilised by ICSI (intracytoplasmatic sperm injection) and the embryo transferred 2-3 days later.

    6. Conditions and Keywords

    Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
    Infertility

    7. Study Design

    Primary Purpose
    Treatment
    Study Phase
    Phase 3
    Interventional Study Model
    Parallel Assignment
    Masking
    None (Open Label)
    Allocation
    Randomized
    Enrollment
    164 (Actual)

    8. Arms, Groups, and Interventions

    Arm Title
    follicular flushing group
    Arm Type
    Experimental
    Arm Description
    Monofollicular IVF therapy with follicular flushing up to five times after aspiration of the follicule at the time to the oocyte pick-up
    Arm Title
    aspiration group
    Arm Type
    Active Comparator
    Arm Description
    Monofollicular IVF therapy with aspiration only at the time of the oozyte pick-up
    Intervention Type
    Other
    Intervention Name(s)
    follicular flushing
    Intervention Description
    Depending on randomisation the follicle is not flushed (group A) or flushed adapted to follicule size (16mm 2ml, 18mm 3ml, and 20mm 4ml etc.) up to five times with (e.g.flushing media with heparin (SynVitro® Flush, Origio, Berlin, Germany). The flushings are collected each in a separate collecting tube (group B). The analysis of the collected oocytes is performed in the IVF lab.
    Intervention Type
    Other
    Intervention Name(s)
    no follicular flushing
    Primary Outcome Measure Information:
    Title
    Proportion of mature oocytes retrieved
    Time Frame
    day of intervention
    Secondary Outcome Measure Information:
    Title
    Number of flushings necessary to retrieve the oocyte (intervention arm only)
    Time Frame
    day of intervention
    Title
    Fertilisation rate
    Time Frame
    one day after intervention
    Title
    Embryo quality (BLEFCO and ASEBIR score) on day 2 after fertilisation
    Time Frame
    two days after intervention
    Title
    Transfer rate
    Time Frame
    2-3 days after intervention
    Title
    Pregnancy rate
    Time Frame
    up to 9 months after the intervention
    Title
    Pain during intervention measured on a VAS scale
    Time Frame
    day of intervention
    Title
    Time used for intervention
    Time Frame
    day of intervention

    10. Eligibility

    Sex
    Female
    Minimum Age & Unit of Time
    18 Years
    Maximum Age & Unit of Time
    42 Years
    Accepts Healthy Volunteers
    Accepts Healthy Volunteers
    Eligibility Criteria
    Inclusion Criteria: Indication for in vitro Fertilisation Desire of natural cycle IVF and ICSI fertilisation Regular menstrual cycle, both ovaries can be reached for follicule aspiration 18-42 years size of the follicle ≥16mm max. 2 previous embryo transfers Exclusion Criteria: <18 and >42 years Preterm ovulation >= 3 previous embryo transfers
    Overall Study Officials:
    First Name & Middle Initial & Last Name & Degree
    Alexandra S Kohl Schwartz, MD
    Organizational Affiliation
    Reproductive Endocrinologist
    Official's Role
    Principal Investigator

    12. IPD Sharing Statement

    Plan to Share IPD
    No
    Citations:
    PubMed Identifier
    32856073
    Citation
    Kohl Schwartz AS, Calzaferri I, Roumet M, Limacher A, Fink A, Wueest A, Weidlinger S, Mitter VR, Leeners B, Von Wolff M. Follicular flushing leads to higher oocyte yield in monofollicular IVF: a randomized controlled trial. Hum Reprod. 2020 Oct 1;35(10):2253-2261. doi: 10.1093/humrep/deaa165.
    Results Reference
    derived

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    Does Follicular Flushing Improve the Outcome in Monofollicular IVF Therapy?

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