Journal article
Blastocyst versus day 2 or 3 transfer
WB Schoolcraft, DK Gardner
SEMINARS IN REPRODUCTIVE MEDICINE | THIEME MEDICAL PUBL INC | Published : 2001
DOI: 10.1055/s-2001-18045
Abstract
The formulation of new sequential culture media, capable of supporting the development of viable human blastocysts, has reopened the discussion regarding the best day for embryo transfer following in vitro fertilization (IVF). Although several laboratories have reported overall increases in implantation rate and IVF efficiency following the transfer of blastocysts, others have failed to observe any benefit from extended culture. While culture conditions for the mammalian embryo undoubtedly have improved significantly over the past few years, relatively little attention has been paid to the quality of oocytes derived from ovarian hyperstimulation or the quality and receptivity of the endometr..
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