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Cited by 417

The DOI matches its Crossref record; 19 of the 19 references it cites were found in a registry or an index.

Prevention of twin pregnancy after in-vitro fertilization or intracytoplasmic sperm injection based on strict embryo criteria: a prospective randomized clinical trial

Open access
Gerris, Jan, De Neubourg, Diane, Mangelschots, Kathelijne, Van Royen, Eric, Van de Meerssche, Muriel, Valkenburg, Marion·1999·Human Reproduction

Abstract

A prospective randomized study comparing single embryo transfer with double embryo transfer after in-vitro fertilization or intracytoplasmic sperm injection (IVF/ICSI) was carried out. First, top quality embryo characteristics were delineated by retrospectively analysing embryos resulting in ongoing twins after double embryo transfer. A top quality embryo was characterized by the presence of 4 or 5 blastomeres at day 2 and at least 7 blastomeres on day 3 after insemination, the absence of multinucleated blastomeres and <20% cellular fragments on day 2 and day 3 after fertilization. Using these criteria, a prospective study was conducted in women <34 years of age, who started their first IVF/ICSI cycle. Of 194 eligible patients, 110 agreed to participate of whom 53 produced at least two top quality embryos and were prospectively randomized. In all, 26 single embryo transfers resulted in 17 conceptions, 14 clinical and 10 ongoing pregnancies [implantation rate (IR) = 42.3%; ongoing pregnancy rate (OPR) = 38.5%] with one monozygotic twin; 27 double embryo transfers resulted in 20 ongoing conceptions with six (30%) twins (IR = 48.1%; OPR = 74%). We conclude that by using single embryo transfer and strict embryo criteria, an OPR similar to that in normal fertile couples can be achieved after IVF/ICSI, while limiting the dizygotic twin pregnancy rate to its natural incidence of <1% of all ongoing pregnancies.

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Metadata

Authors
Gerris, J., De Neubourg, D., Mangelschots, K., Van Royen, E., Van de Meerssche, M., & Valkenburg, M.
Venue
Human Reproduction
Published
1999-10
Volume
14
Issue
10
Pages
2581-2587
ISSN
  • 0268-1161 (ISSN-L)
  • 1460-2350
OpenAlex
W2136983583
Cited by
417
References
19
FWCI
18.12
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Prevention of twin pregnancy after in-vitro fertilization or intracytoplasmic sperm injection based on strict embryo criteria: a prospective randomized clinical trial. https://app.cochat.ai/papers/10.1093/humrep/14.10.2581
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Gerris, J., De Neubourg, D., Mangelschots, K., Van Royen, E., Van de Meerssche, M., & Valkenburg, M. (1999). Prevention of twin pregnancy after in-vitro fertilization or intracytoplasmic sperm injection based on strict embryo criteria: a prospective randomized clinical trial. Human Reproduction. https://doi.org/10.1093/humrep/14.10.2581

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