Keimyung Medical Journal, Vol.9(4) : 482-487, 1990
Details are given of a
preclinical pregnancy established by implanting in vitro fertilized two two-cell and four-cell embryos into the uterine cavity of an infertile woman with tubal factor. The embryos were obtained by in vitro fertilization of six preovulatory eggs aspirated at tuboplasty 34 hours 45 minutes after the injection of hCG during the patient's hyperstimulated menstrual cycle with clomiphene citrate with human menopausal gonadotropin(Pergonal). Increased levels of serum beta-hCG confirmed the presence of a preclinical pregnancy.