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28B - There Is No Need to Take Embryos Out of the Incubator until the Day of Embryo Transfer

Against

from Section IV - Embryology

Published online by Cambridge University Press:  25 November 2021

Roy Homburg
Affiliation:
Homerton University Hospital, London
Adam H. Balen
Affiliation:
Leeds Centre for Reproductive Medicine
Robert F. Casper
Affiliation:
Mount Sinai Hospital, Toronto
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Summary

With new time-lapse technology and the use of single-step media, embryos may increasingly remain undisturbed in culture during the process of IVF. Is there still a need for embryos to be removed from the incubator before the day of transfer? Is it better for an embryo to be left in single-step media, or is it beneficial to refresh the culture media on day three? With the potential need for assisted hatching prior to biopsy, or movement into fresh culture media, there are clear cases where any embryo may need to be taken out of the incubator. The technology of assisted reproduction may change the exact role of the embryologist, but observation, manipulation and maintenance of the culture environment remain vital.

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Chapter
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Publisher: Cambridge University Press
Print publication year: 2021

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References

Mascarenhas, M, Fox, SJ, Thompson, K, Balen, AH. Cumulative live birth rates and perinatal outcomes with the use of time-lapse imaging incubators for embryo culture: a retrospective cohort study of 1882 ART cycles. BJOG 2019;126(2):280–86.CrossRefGoogle ScholarPubMed
ESHRE Working Group on Time-Lapse Technology: Apter, S, Ebner, T, Freour, T, et al. Good practice recommendations for the use of time-lapse technology. Hum Reprod Open. 2020;2020: Issue 2.CrossRefGoogle ScholarPubMed
Singh, S, Hobeika, E, Knochenhauer, ES, Traub, ML. Pregnancy rates after pre-implantation genetic screening for aneuploidy are only superior when trophectoderm biopsy is performed on hatching embryos. JARG. 2019;36(4):621–8.Google ScholarPubMed
Swain, J. Controversies in ART: considerations and risks for uninterrupted embryo culture. RMBO. 2019:39(1):1926.Google ScholarPubMed
Sfontouris, IA, Martins, WP, Nastri, CO, et al. Blastocyst culture using single versus sequential media in clinical IVF: a systematic review and meta-analysis of randomized controlled trials. JARG. 2016;33(10):1261–72.Google ScholarPubMed

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