"We invite all centres of REDLARA and new centres performing Assisted Reproduction procedures to report their data corresponding to the year 2009.
For further information, please contact: firstname.lastname@example.org or email@example.com"
This report presents information of assisted reproductive technologies performed during 2009 and all babies born up until September 2010. A total of 135 centers, located in eleven countries, contributed with their data. The majority of centers were located in Mexico and Brazil, whereas the majority of cycles were registered in Brazil and Argentina.
Preference for intracytoplasmatic sperm injection (ICSI) persists, reaching 85% with respect to in vitro fertilization (IVF). The age of women undergoing ART continues to rise. Of all IVF/ICSI embryo transfers, 42% were performed in women aged ≤ 34; 40% in women aged 35 to 39; and 18% in women aged ≥ 40.
A total of 38, 020 ART procedures with an outcome of 11,488 clinical pregnancies and 8,531 deliveries with live-birth were reported. Included in these ART procedures are: 27,174 IVF/ICSI cycles with 7,141 live born; 4,711 frozen/thawed transfer cycles with 1,067 live born; 4,801 oocyte donation cycles with fresh embryo transfers resulting in 2,047 live born and 1,107 oocyte donation cycles with frozen/thawed embryo transfers resulting in 347 live born.
In 2009, 225 elective single embryo transfer (eSET) and 3,333 elective dual embryo transfer (eDET) were reported. Both were more frequent in women aged ≤ 34. The clinical pregnancy rate per embryo transfer reached 31% with eSET and 43% with eDET. On the other hand, the clinical pregnancy rate, when two embryos (non-elective) and = 3 embryos were transferred, reached 37% and 38%, respectively. When eDET was performed, the twin pregnancy rate reached 27%, and ≥ triple pregnancy rate reached 0.3%, compared to 20% and 4% when ≥ 3 embryos were transferred. Of the deliveries registered, 77% were singletons, 21% were twins and 2% were triplets or greater. Consequently, of the babies born, 61% were singletons, 34% were twins, and 5% were triplets or greater.
Furthermore, 13,410 intrauterine insemination cycles with husband's semen and 2,430 with donor's semen were registered. The majority involved women aged ≤ 34. The clinical pregnancy rate was influenced by woman's age, and the ovulation-induction protocol. 9% of the pregnancies were twins and 2% ≥ triple.
Finally, the previously-described regional tendencies became more pronounced during 2009: an increase in the IVF/ICSI transfer in women aged ≥35; fertilization by means of ICSI; slight decrease in the mean number of transferred embryos.