Birthweight difference of singletons conceived through in vitro fertilization with frozen versus fresh embryo transfer: An analysis of 5406 embryo transfers in a retrospective study 2013–2018
Perinatal risks after frozen embro transfer (FET) have been reassuring but some authors suggest that birthweights are higher after FET than after fresh embryo transfer (ET). The primary objective of this retrospective study, conducted in Clinique de la Sagesse, Rennes (France) from December 2013 to...
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| Veröffentlicht in: | Journal of gynecology obstetrics and human reproduction 2020-01, Vol.49 (1), p.101644-101644, Article 101644 |
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| creator | Laval, Maude Garlantézec, Ronan Guivarc’h-Levêque, Anne |
| description | Perinatal risks after frozen embro transfer (FET) have been reassuring but some authors suggest that birthweights are higher after FET than after fresh embryo transfer (ET). The primary objective of this retrospective study, conducted in Clinique de la Sagesse, Rennes (France) from December 2013 to March 2017, was to determine whether a difference in birthweight exists between children conceived through in vitro fertilization (IVF) with frozen versus fresh ET. The secondary objective was to compare live birth rates after frozen versus fresh cycles.
All couples undergoing IVF were included. Cycles with gamete donation and twin pregnancies were excluded. Hormone therapy was used in all embryo transfers. The main outcome measures were the child’s birthweight, mode of delivery, gestation length and sex, maternal characteristics, and IVF characteristics. The primary endpoint was birthweight.
We studied 5406 embryo transfers and the 708 resulting singleton live births on which birthweight data were available. Mean birthweight was 3357g after frozen embryo transfer versus 3183g after fresh embryo transfer (p |
| doi_str_mv | 10.1016/j.jogoh.2019.101644 |
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All couples undergoing IVF were included. Cycles with gamete donation and twin pregnancies were excluded. Hormone therapy was used in all embryo transfers. The main outcome measures were the child’s birthweight, mode of delivery, gestation length and sex, maternal characteristics, and IVF characteristics. The primary endpoint was birthweight.
We studied 5406 embryo transfers and the 708 resulting singleton live births on which birthweight data were available. Mean birthweight was 3357g after frozen embryo transfer versus 3183g after fresh embryo transfer (p<0.001). After adjusting for confounding factors, the children born after frozen embryo transfer were 165.2g heavier (95%CI [92.96–237.51]). No difference was found in gestation length. Live birth was obtained after the 1.6th IVF attempt. Live birth rate was higher for fresh cycles (19% versus 12%, p<0.001), and the caesarean rate lower (16% versus 21%).
Birthweight was higher after frozen embryo transfer for a similar gestational age. Further research is needed to elucidate the mechanisms responsible for this difference.</description><identifier>ISSN: 2468-7847</identifier><identifier>ISSN: 2468-8495</identifier><identifier>EISSN: 2468-7847</identifier><identifier>DOI: 10.1016/j.jogoh.2019.101644</identifier><identifier>PMID: 31593781</identifier><language>eng</language><publisher>France: Elsevier Masson SAS</publisher><subject>Birthweight ; Fresh embryo transfert ; Frozen embryo transfer ; Gynecology and obstetrics ; Human health and pathology ; In vitro fertilization ; Life Sciences ; Live birth ; Santé publique et épidémiologie</subject><ispartof>Journal of gynecology obstetrics and human reproduction, 2020-01, Vol.49 (1), p.101644-101644, Article 101644</ispartof><rights>2019 Elsevier Masson SAS</rights><rights>Copyright © 2019 Elsevier Masson SAS. All rights reserved.</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c438t-7f376bc0d0e4b4818d47f9ad90fb3de489f3d98c3d66f23249ba6ba9051a65343</citedby><cites>FETCH-LOGICAL-c438t-7f376bc0d0e4b4818d47f9ad90fb3de489f3d98c3d66f23249ba6ba9051a65343</cites><orcidid>0000-0001-7420-6341</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27922,27923</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/31593781$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://univ-rennes.hal.science/hal-02364723$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Laval, Maude</creatorcontrib><creatorcontrib>Garlantézec, Ronan</creatorcontrib><creatorcontrib>Guivarc’h-Levêque, Anne</creatorcontrib><title>Birthweight difference of singletons conceived through in vitro fertilization with frozen versus fresh embryo transfer: An analysis of 5406 embryo transfers in a retrospective study 2013–2018</title><title>Journal of gynecology obstetrics and human reproduction</title><addtitle>J Gynecol Obstet Hum Reprod</addtitle><description>Perinatal risks after frozen embro transfer (FET) have been reassuring but some authors suggest that birthweights are higher after FET than after fresh embryo transfer (ET). The primary objective of this retrospective study, conducted in Clinique de la Sagesse, Rennes (France) from December 2013 to March 2017, was to determine whether a difference in birthweight exists between children conceived through in vitro fertilization (IVF) with frozen versus fresh ET. The secondary objective was to compare live birth rates after frozen versus fresh cycles.
All couples undergoing IVF were included. Cycles with gamete donation and twin pregnancies were excluded. Hormone therapy was used in all embryo transfers. The main outcome measures were the child’s birthweight, mode of delivery, gestation length and sex, maternal characteristics, and IVF characteristics. The primary endpoint was birthweight.
We studied 5406 embryo transfers and the 708 resulting singleton live births on which birthweight data were available. Mean birthweight was 3357g after frozen embryo transfer versus 3183g after fresh embryo transfer (p<0.001). After adjusting for confounding factors, the children born after frozen embryo transfer were 165.2g heavier (95%CI [92.96–237.51]). No difference was found in gestation length. Live birth was obtained after the 1.6th IVF attempt. Live birth rate was higher for fresh cycles (19% versus 12%, p<0.001), and the caesarean rate lower (16% versus 21%).
Birthweight was higher after frozen embryo transfer for a similar gestational age. Further research is needed to elucidate the mechanisms responsible for this difference.</description><subject>Birthweight</subject><subject>Fresh embryo transfert</subject><subject>Frozen embryo transfer</subject><subject>Gynecology and obstetrics</subject><subject>Human health and pathology</subject><subject>In vitro fertilization</subject><subject>Life Sciences</subject><subject>Live birth</subject><subject>Santé publique et épidémiologie</subject><issn>2468-7847</issn><issn>2468-8495</issn><issn>2468-7847</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp9UcGO0zAQjRCIXS37BUjIRzi02LHrOEgcygpYpEpc4Gw58bhxlcbF43TVPfEPfBG_wpfgbJYV4sBp7Of35nnmFcVzRpeMMvl6t9yFbeiWJWX1HSLEo-K8FFItKiWqx3-dz4pLxB2llKlSSi6fFmecrWpeKXZe_HznY-puwG-7RKx3DiIMLZDgCPph20MKA5I2ZMwfwZLUxTBuO-IHcvQpBpIFyff-1iQfBnLjU0dcDLeQ3yHiiPkG2BHYN_EUSIpmwCx5Q9YDMYPpT-hxMlsJKv8l4eRiSITsgwdoU_4BwTTaE8lj81_ff-SinhVPnOkRLu_rRfH1w_svV9eLzeePn67Wm0UruEqLyvFKNi21FEQjFFNWVK42tqau4RaEqh23tWq5ldKVvBR1Y2RjarpiRq644BfFq7lvZ3p9iH5v4kkH4_X1eqMnjJZciqrkR5a5L2fuIYZvI2DSe48t9L0ZIIyoS0559mC1zFQ-U9s8JEZwD70Z1VOweqfvotZT1HqOOqte3BuMzR7sg-ZPsJnwdiZAXsnRQ9TY-ilZ62PepLbB_9fgN_wPvnc</recordid><startdate>202001</startdate><enddate>202001</enddate><creator>Laval, Maude</creator><creator>Garlantézec, Ronan</creator><creator>Guivarc’h-Levêque, Anne</creator><general>Elsevier Masson SAS</general><general>Elsevier</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>1XC</scope><scope>VOOES</scope><orcidid>https://orcid.org/0000-0001-7420-6341</orcidid></search><sort><creationdate>202001</creationdate><title>Birthweight difference of singletons conceived through in vitro fertilization with frozen versus fresh embryo transfer: An analysis of 5406 embryo transfers in a retrospective study 2013–2018</title><author>Laval, Maude ; Garlantézec, Ronan ; Guivarc’h-Levêque, Anne</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c438t-7f376bc0d0e4b4818d47f9ad90fb3de489f3d98c3d66f23249ba6ba9051a65343</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Birthweight</topic><topic>Fresh embryo transfert</topic><topic>Frozen embryo transfer</topic><topic>Gynecology and obstetrics</topic><topic>Human health and pathology</topic><topic>In vitro fertilization</topic><topic>Life Sciences</topic><topic>Live birth</topic><topic>Santé publique et épidémiologie</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Laval, Maude</creatorcontrib><creatorcontrib>Garlantézec, Ronan</creatorcontrib><creatorcontrib>Guivarc’h-Levêque, Anne</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><jtitle>Journal of gynecology obstetrics and human reproduction</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Laval, Maude</au><au>Garlantézec, Ronan</au><au>Guivarc’h-Levêque, Anne</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Birthweight difference of singletons conceived through in vitro fertilization with frozen versus fresh embryo transfer: An analysis of 5406 embryo transfers in a retrospective study 2013–2018</atitle><jtitle>Journal of gynecology obstetrics and human reproduction</jtitle><addtitle>J Gynecol Obstet Hum Reprod</addtitle><date>2020-01</date><risdate>2020</risdate><volume>49</volume><issue>1</issue><spage>101644</spage><epage>101644</epage><pages>101644-101644</pages><artnum>101644</artnum><issn>2468-7847</issn><issn>2468-8495</issn><eissn>2468-7847</eissn><abstract>Perinatal risks after frozen embro transfer (FET) have been reassuring but some authors suggest that birthweights are higher after FET than after fresh embryo transfer (ET). The primary objective of this retrospective study, conducted in Clinique de la Sagesse, Rennes (France) from December 2013 to March 2017, was to determine whether a difference in birthweight exists between children conceived through in vitro fertilization (IVF) with frozen versus fresh ET. The secondary objective was to compare live birth rates after frozen versus fresh cycles.
All couples undergoing IVF were included. Cycles with gamete donation and twin pregnancies were excluded. Hormone therapy was used in all embryo transfers. The main outcome measures were the child’s birthweight, mode of delivery, gestation length and sex, maternal characteristics, and IVF characteristics. The primary endpoint was birthweight.
We studied 5406 embryo transfers and the 708 resulting singleton live births on which birthweight data were available. Mean birthweight was 3357g after frozen embryo transfer versus 3183g after fresh embryo transfer (p<0.001). After adjusting for confounding factors, the children born after frozen embryo transfer were 165.2g heavier (95%CI [92.96–237.51]). No difference was found in gestation length. Live birth was obtained after the 1.6th IVF attempt. Live birth rate was higher for fresh cycles (19% versus 12%, p<0.001), and the caesarean rate lower (16% versus 21%).
Birthweight was higher after frozen embryo transfer for a similar gestational age. Further research is needed to elucidate the mechanisms responsible for this difference.</abstract><cop>France</cop><pub>Elsevier Masson SAS</pub><pmid>31593781</pmid><doi>10.1016/j.jogoh.2019.101644</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0001-7420-6341</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Birthweight Fresh embryo transfert Frozen embryo transfer Gynecology and obstetrics Human health and pathology In vitro fertilization Life Sciences Live birth Santé publique et épidémiologie |
| title | Birthweight difference of singletons conceived through in vitro fertilization with frozen versus fresh embryo transfer: An analysis of 5406 embryo transfers in a retrospective study 2013–2018 |
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