Cost-effectiveness of IVF in women 38 years and older.

Objective: To compare the cost per delivery in women younger than 38 years with women equal to or older than 38 years of age attempting IVF.

Methods: All couples undergoing IVF treatment between October 1991 and September 1998 were enrolled in this study. A standard protocol of controlled ovarian hyperstimulation was employed throughout the study.

Outcome of pregnancy in IVF-ET cycle at Ramathibodi Hospital.

As assisted reproductive technology is being developed, in vitro fertilization and embryo transfer (IVF-ET) are the treatments of choice for many infertility problems. The outcome of pregnancies achieved by IVF-ET is different from that of spontaneous pregnancies. In this retrospective study, the outcome of pregnancies from 400 IVF treatment cycles performed from October 1991 to October 1994 were reported.

Determinants of multiple pregnancies in in vitro fertilization other than number of transferred embryos.

The aim of this study is to assess the many different parameters involved in the incidence of multiple pregnancies, such as maternal age, stimulation, endometrium, receptivity and the quality of the transferred embryos. During a 3.5 year period, 86 pregnancies were recorded in our IVF unit.

Chemiluminescence immunoassay versus radioimmunoassay for the measurement of reproductive hormones.

Objectives: To compare the hormonal values determined by chemiluminescence immunoassay (CIA) and radioimmunoassay (RIA).

Methods: Blood samples, drawn from eight volunteers during one menstrual cycle, were assayed for estradiol, progesterone, luteinizing hormone (LH), follicle stimulating hormone (FSH) and prolactin by CIA and RIA methods. The values obtained from these two assay techniques were compared.

"Simplified IVF": program for developing countries.

The aim of this study is to assess the results of the "Simplified IVF" program at Ramathibodi Hospital. Ramathibodi IVF program has been in operation since October, 1991. Some steps of the conventional IVF procedures have been modified due to the limitation of resources.