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The purpose of this study is to determine whether embryo transfer on day 3 versus day 5 shows a significant difference in implantation, clinical pregnancy, live birth, miscarriage and multiple pregnancy rates among women with at least two previous IVF failures
A total of 200 infertile women with at least two previous IVF failures will enroll in this prospective randomized clinical trial study and will randomly be divided into two groups. Random permuted blocks with a block size of 4 will be used to ensure randomization and complete allocation concealment.
The study protocol will be assessed by an independent institutional review board and Royan ethics committee.
Ovarian stimulation protocol will include the use of a GnRH agonist (Superfact; Aventis Pharma Deutshlan, Frankfurt, Germany) administered in the long (down-regulation) protocol and the subsequent addition of FSH (Gonal F, Sereno, Switzerland). Embryos will be initially cultured in G1.V5 medium) Vitrolife-Sweden)TM on day 1 and 2, being transferred from this medium to G2.V5 ) Vitrolife-Sweden)TM on day 3. Embryos will be transferred on day 5, depending on the degree of expansion of the blastocyst.
Main outcome measures will be implantation, clinical pregnancy and live birth rates.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Day 5 embryo transfer group | Experimental | Embryo will transfer at blastocyst stage (day 5 after ovum pick up) |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Day 5 embryo transfer group | Procedure | Embryo will transfer at blastocyst stage (day 5 after ovum pick up) |
|
| Measure | Description | Time Frame |
|---|---|---|
| Clinical Pregnancy rate | 6-8 weeks after oocyte retrieval | |
| Live birth rate | After 37 weeks of gestational age |
| Measure | Description | Time Frame |
|---|---|---|
| Implantation rate | 4 weeks after embryo transfer | |
| Miscarriage rate | 18 weeks after fertilization |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Mahnaz Ashrafi,, MD | Royan Institute | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Royan Institute | Tehran | 19395-4644 | Iran |
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| Label | URL |
|---|---|
| Related Info | View source |
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| ID | Term |
|---|---|
| D007246 | Infertility |
| ID | Term |
|---|---|
| D000091662 | Genital Diseases |
| D000091642 | Urogenital Diseases |
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