Retrospective study of the cumulative pregnancy rate per transference, per cycle and per patient comparing different procedures

Abstract

[eng] Since the groundbreaking Assisted Reproduction Techniques investigations became important in the medical and biological practices, improvements of the treatment of infertility have emerged in an exponential way. In Invitro Fertilization, one way to evaluate the outcome of the technique is the calculation of the pregnancy rate (PR). In this thesis, the evaluation of the IVF laboratory of Son Espases University Hospital (HUSE) was done by calculating the PR in three levels: per patient, per cycle and per transference, comparing different procedures at the different levels. At transference level, the comparation was done between fresh transferences and cryotransferences; at a cycle level, it was done differentiating the type of cycle (freeze-all, fresh only or combined cycle), comparing the number of cycle and separating the patients per number of cryopreserved embryos obtained and number of cryotransferences performed. Finally, at a patient level, the comparation was done between patients who ended the process with a pregnancy and those ones who didn’t. Results show a good quality of the laboratory, with more patients getting pregnant. Furthermore, at cycle level, the obtention of 3 embryos to cryopreservate and its future transference seems to be beneficious for the patient, being a sign of good prognosis. For freeze-all techniques more studies need to be done before select the groups of patients that can be beneficiated with this technique.