DIFFICULT EMBRYO-TRANSFER - THE ULTRASONOGRAPHY CONTRIBUTION

The aim of this retrospective study is to compare the results of embry o transfer in IVF without or after cervical dilatation, and trans-myom etrial trans-vaginal transfer and after ultrasound-guided transfer. Fr om 1989 to 1996 we have performed 4 355 embryo transfers to obtain 1 1 15 pregnancies. The results were 25,6 % pregnancy by tranfer and 10,9 embryos to start a pregnancy. During this time 281 transfers were appr eciated as difficult or impossible and a cervical dilatation was done. We obtain 17,4 % pregnancies by transfer with 16,5 embryos per pregna ncy; We also practiced for the same indication 50 transmyometrial-tran svaginal transfers. The result was 18 % pregancy by transfer and 16 em bryos to start a pregnancy. In 1997 we have stopped cervical dilatatio ns to prefer in these indications ultrasound-guided embryo transfer. 7 4 transfer were performed with this method to obtain 28,4 % pregnancie s per transfer and 9,9 embryos to start one pregnancy. This results ar e compared to a subgroup of women 38 years old or less, with a normal partner's sperm and in witch two embryos or more were tranferred. At t he end we think that the use of ultrasonography for embryo transfer is benefit in IVF program.