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The effect of transferring pronuclear embryos on pregnancy outcome after in vitro fertilization
G M Warnes1, P Quinn, C A Kirby
1Queen Elizabeth Hospital, University of Adelaide, Woodville, South Australia.
Annals of the New York Academy of Sciences
|January 1, 1988
Abstract:
In a prospective clinical trial the pregnancy rate in patients matched for infertility status, degree of hyperstimulation, and number of oocytes recovered was unaffected by whether embryos were transferred while still pronuclear (day 1) or after they had undergone cleavage (day 2). The pregnancy rates per transfer were 27% and 22%, respectively, for the two transfer times. Unlike results of a previous study, no difference was detected in the outcome of pregnancies from the two groups.