2013
DOI: 10.5653/cerm.2013.40.3.122
|View full text |Cite
|
Sign up to set email alerts
|

Comparison of the clinical outcomes of day 4 and 5 embryo transfer cycles

Abstract: ObjectiveThe majority of embryo transfers (ETs) to date have been performed on day 3 to reduce the potential risk of developmental arrest of in vitro cultured embryos before ET. Development of sequential media has significantly improved culture conditions and allowed blastocyst transfer on day 5. While day 5 ET provides higher clinical pregnancy outcomes with reduced risks of multiple pregnancies, it still has potential risks of developmental arrest of IVF embryos. The aim of this study was to evaluate the cli… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

1
12
0

Year Published

2014
2014
2024
2024

Publication Types

Select...
7
1

Relationship

2
6

Authors

Journals

citations
Cited by 17 publications
(13 citation statements)
references
References 22 publications
(22 reference statements)
1
12
0
Order By: Relevance
“…Fertilized embryos were transferred to G-I.III medium. Embryos were scored according to the number of blastomeres and percentage of enucleate fragments [22,23]. Embryo grading was classified into five groups, as follows: grade I, even blastomeres, no fragmentation; grade I-1, even blastomeres, fragmentation< 25 %; grade II, uneven blastomeres, fragmentation<25 %; grade II-1, uneven blastomeres, fragmentation 25 % -50 %; grade III, even or uneven blastomeres, fragmentation≥50 %.…”
Section: Assessment Of Fertilization and Embryo Gradingmentioning
confidence: 99%
“…Fertilized embryos were transferred to G-I.III medium. Embryos were scored according to the number of blastomeres and percentage of enucleate fragments [22,23]. Embryo grading was classified into five groups, as follows: grade I, even blastomeres, no fragmentation; grade I-1, even blastomeres, fragmentation< 25 %; grade II, uneven blastomeres, fragmentation<25 %; grade II-1, uneven blastomeres, fragmentation 25 % -50 %; grade III, even or uneven blastomeres, fragmentation≥50 %.…”
Section: Assessment Of Fertilization and Embryo Gradingmentioning
confidence: 99%
“…D4 embryos transplantation can effectively eliminate the phenomenon of embryos arrest in the cleavage stage. [ 16 , 17 ] It was well known that human embryos entered the uterine cavity on the fourth day after fertilization. To some extent, D4 embryos transfer was more natural than the cleavage embryos transfer of D3.…”
Section: Discussionmentioning
confidence: 99%
“…Embryo cleavage of the two-pronuclear oocytes was evaluated after 48 additional hours of in vitro culture (day 3). Embryos were assessed according to a previously described embryo grading system [122122]. Embryos were graded according to the following criteria: grade I embryos, even blastomeres and no fragmentation; grade I-1 embryos, even blastomeres and <25% fragmentation; grade II embryos, uneven blastomeres and <25% fragmentation; grade II-1 embryos, uneven blastomeres and 25% to 50% fragmentation; and grade III embryos, even or uneven blastomeres and ≥50% fragmentation.…”
Section: Methodsmentioning
confidence: 99%