Day 3 Embryo Cryopreservation: Metabolic and Viability Analysis

Embryo preservation through freezing plays a significant role in human assisted reproduction. It provides an opportunity for patients to have more than one attempt following an ovarian stimulation cycle, thereby decreasing the exposure of patients to exogenous gonadotrophins and improving cumulative pregnancy rates. The purpose of this study is to compare effectiveness of two different freezing methods.

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Key information

Conditions

Fertilization in Vitro Preservation of Supernumerary Embryos

Age range

18 year and older

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

American Hospital of Istanbul

Istanbul, 34365, Turkey (Türkiye)

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

ICSI with own gametes
Couples who did not wish to cryopreserve their excess embryos for possible transfer in a future cyle
Donating excess embryos for research purposes

Exclusion criteria

Embryos derived from surgically retrieved spermatozoa
Blastocysts
Embryos of low quality (Grade 3 or 4 according to Hardarson)

Treatment and study plan

Vitrification

Procedure

Embryos were vitrified according to a previously described technique

Slow freezing

Procedure

Embryos were frozen with slow freezing technique

Primary outcomes

Blastocyst development rate

Time frame: 3 days after thawing

Sponsors and collaborators

Lead sponsor

V.K.V. American Hospital, Istanbul

Other

Registry information

Important dates

Study start: 2006
Primary completion: 2007
First posted: Feb 6, 2008
Registry last updated: Feb 6, 2008

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed