Live birth and multiple birth rates in US in vitro fertilization treatment using donor oocytes: a comparison of single-embryo transfer and double-embryo transfer

Predicting personalized multiple birth risks after in vitro fertilization-double embryo transfer.

OBJECTIVE To report and evaluate the performance and utility of an approach to predicting IVF-double embryo transfer (DET) multiple birth risks that is evidence-based, clinic-specific, and considers each patient's clinical profile. DESIGN Retrospective prediction modeling. SETTING An outpatient university-affiliated IVF clinic. PATIENT(S) We used boosted tree methods to analyze 2,413 inde...

Elective single-embryo transfer versus double-embryo transfer in in vitro fertilization.

BACKGROUND The risks of premature birth and perinatal death are increased after in vitro fertilization. These risks are mainly due to the high incidence of multiple births, which relates to the number of embryos transferred. METHODS We performed a randomized, multicenter trial to assess the equivalence of two approaches to in vitro fertilization with respect to the rates of pregnancy that res...

Comparison of Easy and Difficult Embryo Transfer Outcomes in In Vitro Fertilization Cycles

Live births after vitrification of oocytes in a stimulated in vitro fertilization-embryo transfer program.

OBJECTIVE To assess the usefulness of the vitrification method in clinical practice. DESIGN Clinical study of vitrification of human oocytes. SETTING A university-affiliated hospital. PATIENT(S) Thirty-four patients who agreed to undergo additional IVF-ET after the failed fresh cycle using the previously vitrified/thawed oocytes. INTERVENTION(S) Surplus oocytes from the IVF-ET patients ...

In Vitro Fertilization and Embryo Transfer

macrophages" is discussed in the third symposium. Most studies in this section have employed the methodology of DNA labeling, using tritiated thymidine (3H-Tdr) to ascertain whether microglia are related to blood monocytes (as one contributor contends most CNS macrophages are), or whether they represented a "third" glial cell line. Other articles attempt to quantitate neural synapses, to elabor...