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Transfer of Blastocysts in cryopreseved cycles

Evaluation of pregnancy outcome after Transfer of Blastocysts derived from Frozen –Thawed cleavage stage embryos

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
IRCT
Registry ID
IRCT201107306420N7
Enrollment
150
Registered
2011-09-01
Start date
2009-01-01
Completion date
Unknown
Last updated
2021-04-26

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

Conditions

Infertility. Complication associated with artificial fertilization, unspecified

Interventions

Intervention 1: Intervention: Thawing is done at least 2 months after cryopreservation. All embryos in group 1 (blastocyst group) transfer to media and extended culture is done for 3 days until blasto

Sponsors

Yazd research and clinical center for infertility
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
20 Years to 35 Years

Inclusion criteria

Inclusion criteria: women underwent previously in vitro fertilization (IVF) or intra-cytoplasmicsperm injection (ICSI) with embryo cryopreservation

Exclusion criteria

Exclusion criteria: History of diabetes mellitus Thyroid disease Severe endometriosis Oocyte donation cycles Women with age>35 years Body mass index (BMI)>30 kg/m2

Design outcomes

Primary

MeasureTime frame
Chemical pregnancy. Timepoint: 14 days after embryo transfer. Method of measurement: Blood laboartory kit.;Clinical pregnancy. Timepoint: 5 weeks after positive beta-hCG. Method of measurement: Observation of fetal heart activity by transvaginal ultrasonography.;Ongoing pregnancy. Timepoint: 12 weeks after embryo transfer. Method of measurement: Ultrasonography.

Secondary

MeasureTime frame
Miscarriage rate. Timepoint: Lost of pregnancy before 20 gestational week. Method of measurement: Absence of fetal heart activity in ultra sound sonography.

Countries

Iran (Islamic Republic of)

Contacts

Public ContactMaryam Eftekhar

YAazd Research and Clinical Center for Infertility

eftekhar@ssu.ac.ir+98 35 1824 7085

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026