Timing of COC Denudation and Embryo Quality
Study Details
Study Description
Brief Summary
The relation between the timing of COC denudation and oocyte /embryo quality is controversial. The aim of this study is to examine whether timing of denudation of sibling oocytes has any effect on embryo quality.
Condition or Disease | Intervention/Treatment | Phase |
---|---|---|
|
Detailed Description
Retrieved sibling cumulus-oocyte complexes (COCs) will be randomly divided into two groups, in the first group denudation will be in 30 minutes after oocyte retrieval, in second group denudation will take place after 2 hours of incubation.
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
---|---|
early denudation Cumulus-oocyte complexes will be denudated in 30 min after oocyte retrieval |
Other: early denudation
COCs will be denudated in 30 min after oocyte retrieval
|
late denudation Denudation will be done 2 hr after oocyte retrieval |
Other: late denudation
COCs will be denudated 2 hr after oocyte retrieval
|
Outcome Measures
Primary Outcome Measures
- Number of good quality cleavage embryos [3 days after microinjection]
Quality of embryos will be assessed morphologically on day 3
- Embryo utilization rate [1 week after microinjection]
Embryo utilization rate is defined as the number of embryos utilized (transferred or cryopreserved) per number of 2PN zygotes.
Secondary Outcome Measures
- Fertilization rate [16-18 hour after microinjection]
Proportion of injected oocytes with 2PN the day after injection
- Cleavage rate [2 days after microinjection]
Proportion of cleaved zygotes on day 2
- Blastulation rate [1 week after microinjection]
Blastocyst rate per oocyte
Eligibility Criteria
Criteria
Inclusion Criteria:
-
COH with GnRH antagonist cycle
-
5 or more oocytes collected
Exclusion Criteria:
-
Fewer than 4 oocytes after retrieval
-
Previous history of total fertilization failure or oocyte maturation arrest
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Male partner requiring surgical sperm retrieval (MESA or TESA).
Contacts and Locations
Locations
Site | City | State | Country | Postal Code | |
---|---|---|---|---|---|
1 | Acibadem Altunizade Hospitai | Istanbul | Turkey | 34785 |
Sponsors and Collaborators
- Acıbadem Atunizade Hospital
Investigators
None specified.Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- COCdenudation