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
About this trial
This is an interventional treatment trial for Infertility
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
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
NCT ID
NCT02641808
First Posted
December 12, 2015
Last Updated
July 17, 2020
Sponsor
Insel Gruppe AG, University Hospital Bern
Collaborators
University of Bern
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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