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

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...

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Veröffentlicht in:	Human reproduction (Oxford) 1999-10, Vol.14 (10), p.2581-2587
Hauptverfasser:	Gerris, Jan, De Neubourg, Diane, Mangelschots, Kathelijne, Van Royen, Eric, Van de Meerssche, Muriel, Valkenburg, Marion
Format:	Artikel
Sprache:	eng
Schlagworte:	Adult Biological and medical sciences Birth control Embryo Implantation Embryo Transfer Female Fertilization in Vitro Gynecology. Andrology. Obstetrics Humans IVF Medical sciences Pregnancy Pregnancy Rate Pregnancy, Multiple Prospective Studies Retrospective Studies Risk Factors single embryo transfer Sperm Injections, Intracytoplasmic Sterility. Assisted procreation twin pregnancy Twins, Monozygotic
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Zusammenfassung:	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
ISSN:	0268-1161 1460-2350
DOI:	10.1093/humrep/14.10.2581