Jove
Visualize
Contact Us

Related Concept Videos

In Vitro Fertilization01:24

In Vitro Fertilization

In vitro fertilization (IVF) is a form of assisted reproductive technology where an egg is fertilized with sperm in a controlled laboratory environment before transferring the resulting embryo into the uterus. This process is designed to help individuals and couples experiencing difficulties conceiving.
The IVF process begins with ovarian stimulation, during which reproductive endocrinologists prescribe hormonal medications to stimulate the ovaries to produce multiple eggs instead of the single...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Reproductive advice - finding the Yin and Yang.

Irish medical journal·2025
Same author

In situ formation of micro/nano phase composite for 3D printing clinically relevant bioresorbable stents.

Materials today. Chemistry·2025
Same author

Features and frequency of use of electronic health records in primary care across 20 countries: a cross-sectional study.

Public health·2024
Same author

Extending Pharmacy Services to the Point of Discharge.

Irish medical journal·2023
Same author

Recurrent Lung Injury Resulting From Unusual Cases of Aero-Digestive Disease.

Dysphagia·2023
Same author

Pulmonary arterial hypertension in hereditary hemorrhagic telangiectasia associated with ACVRL1 mutation: a case report.

Journal of medical case reports·2022
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Video

Updated: Jul 2, 2026

Cryopreservation of Preimplantation Embryos of Cattle, Sheep, and Goats
11:10

Cryopreservation of Preimplantation Embryos of Cattle, Sheep, and Goats

Published on: August 5, 2011

Frozen-thawed transfer cycles: are they comparable with fresh?

E V Mocanu1, E Cottell, K Waite

  • 1Human Assisted Reproduction Ireland, Rotunda Hospital, Dublin. emocanu@rcsi.ie

Irish Medical Journal
|August 15, 2008
PubMed
Summary

Frozen-thawed zygote transfer success rates are lower than fresh cycles, with higher pregnancy loss. However, cryopreservation of good quality zygotes still offers optimal outcomes for subsequent frozen embryo transfer treatments.

More Related Videos

Cryopreservation of Mouse Embryos by Ethylene Glycol-Based Vitrification
06:00

Cryopreservation of Mouse Embryos by Ethylene Glycol-Based Vitrification

Published on: November 18, 2011

Use of Freeze-thawed Embryos for High-efficiency Production of Genetically Modified Mice
06:46

Use of Freeze-thawed Embryos for High-efficiency Production of Genetically Modified Mice

Published on: April 2, 2020

Related Experiment Videos

Last Updated: Jul 2, 2026

Cryopreservation of Preimplantation Embryos of Cattle, Sheep, and Goats
11:10

Cryopreservation of Preimplantation Embryos of Cattle, Sheep, and Goats

Published on: August 5, 2011

Cryopreservation of Mouse Embryos by Ethylene Glycol-Based Vitrification
06:00

Cryopreservation of Mouse Embryos by Ethylene Glycol-Based Vitrification

Published on: November 18, 2011

Use of Freeze-thawed Embryos for High-efficiency Production of Genetically Modified Mice
06:46

Use of Freeze-thawed Embryos for High-efficiency Production of Genetically Modified Mice

Published on: April 2, 2020

Area of Science:

  • Reproductive Medicine
  • Embryology
  • Assisted Reproductive Technology (ART)

Background:

  • Cryopreservation of zygotes is an established procedure in assisted reproductive technology (ART).
  • The efficacy of using frozen-thawed (day 2) zygotes compared to fresh cycles requires thorough evaluation.

Purpose of the Study:

  • To compare the success rates of frozen-thawed zygote transfer with fresh ART cycles.
  • To analyze clinical pregnancy rates, implantation rates, and pregnancy loss in both frozen and fresh treatment groups.

Main Methods:

  • Prospective follow-up and analysis of all frozen-thawed (FZT) and fresh ART cycles over a 12-month period.
  • Data collection included patient numbers, thaw-survival rates, clinical pregnancy rates, implantation rates, and pregnancy loss rates.

Main Results:

  • The overall thaw-survival rate for zygotes was 71.7%.
  • Clinical pregnancy rates per transfer were 21% for FZT cycles versus 29.1% for fresh cycles.
  • Implantation rates were 12.3% for FZT and 16% for fresh cycles, with a higher pregnancy loss rate (29% vs. 18.3%) in the FZT group.

Conclusions:

  • While fresh cycles show higher success rates, cryopreservation of good quality zygotes provides optimal outcomes for subsequent frozen treatments.
  • The findings support the consideration of elective single zygote transfers in ART.