Human Reproduction, Vol. 10, No. 3, pp. 568-571, 1995
© 1995 European Society of Human Reproduction and Embryology
research-article |
Infertility: Semi-programmed ovarian stimulation as the first choice in in-vitro fertilization programmes
Human Reproduction Center, Sinhá Junqueira Maternity Foundation Ribeirão Preto, São Paulo, Brazil
The objective of this work was to evaluate the results obtained with a protocol of semi-programmed ovarian stimulation (low-dose contraceptive pill + clomiphene citrate + human menopausal gonadotrophin + dexamethasone) used as the first-choice method for in-vitro fertilization (IVF). A total of 207 punctures was performed for oocyte collection from 168 patients (mean age 31.0 ± 4.0 years); mean infertility duration was 5.81 ± 3.30 years. The infertility factors indicating IVF for this population were as follows: tubo-peritoneal factor, 68%; pure or associated male factor, 9.2%; endometriosis, 11.1%; ovulatory factor, 4.3%; idiopathic factor, 11.6%; others, 2.4%. No oocyte was found on aspiration in five procedures (2.4%), with the mean number of oocytes collected per cycle being 5.87 ± 3.3 (range 018). The cancellation rate per puncture was 5%. The mean embryo cleavage rate was 60.2 ± 36.8%, with transfer of at least one embryo occurring in 82.6% of all punctures. The mean number of transferred embryos was 2.52 ± 1.60 (range 15). The clinical pregnancy rates per started cycle and per puncture were 22.4 (218 ovarian stimulation cycles) and 23.6% (a total of 49 clinical pregnancies, 36 single, nine twins and four triplets) respectively. The clinical pregnancy rate per embryo transfer was 28.6%. The embryo implantation rate was 12.6%. The abortion rate was 16.3%. The index of deliveries per puncture was 19.8%. There were no cases of moderate or severe ovarian hyperstimulation syndrome. The favourable results obtained, in addition to the low operational costs, confirm the validity of the use of semi-programmed cycles as the first choice for patients undergoing the IVF process.
Key words: in-vitro fertilization/ovarian stimulation/semi-programmed cycle
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