2019, Number S1
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ABSTRACTEmbryo transfer is the last step of in vitro fertilization (IVF), which is considered by some authors to be one of the most critical steps, since the variations that may exist between the operator’s experience influence the implantation rate of these embryos. This final step has multiple aspects of evaluation from the logistical details prior to the transfer, which in many cases is full of myths, the technique and the experience of the specialist. As well as, the selection of the embryo to transfer according to its quality and day of development and the quantity of these. The technique for embryo transfer is helped by technology, with the use of ultrasound guidance, which has shown in various metanalyses to increase the pregnancy rate and decrease the rate of ectopic pregnancies. There are very few advances in technology to improve this practice, the innovations in catheters have been few, and the vast majority of reproduction clinics do not have a learning program for this technique. Many factors, some before and others during and after the embryo transfer procedure, can affect the outcome. This emphasizes the importance of having all the variables of this practice in the best possible control, to improve the success rates of our patients.
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