THE RESULT IN BLASTOCYST AND CLEAVAGE-STAGE EMBRYO TRANSFER IN ASSITED REPRODUCTIVE TECHNOLOGY

Abstract

Selecting the high developmental potential embryos to transfer and achieving a healthy live birth is the goal of assisted reproduction. At other Assisted Reproductive Centers and at the Department of assisted reproductive technology - A Thai Nguyen hospital, day 3 and day 5 embryo transfers are still carried out in parallel and depend on the characteristics of each patient. The objective of this study was to evaluate the result of embryo transfer which was good at the cleavage embryo stage (day 3) and blastocyst stage (day 5) with using a retrospective study method based on the criteria of embryo transfer quality, beta HCG results after embryo transfer, clinical pregnancy rate, biochemical pregnancy, progressed pregnancy. Our study showed that the rate of beta positive is 60.9%, the rate of a clinical pregnancy is 56.4%, the rate of ongoing pregnancy is 55.0%. In addition, the rate of ongoing pregnancy was significantly lower in the group of patients undergoing day 3 embryo transfer compared with day 5 embryo transfer (47.9% vs 86.5%), but the rate of multiple pregnancies at day 5 embryo transfer was higher than that of day 3 embryo transfer (31.5% vs 8.5%). Curently, embryo transfer at blastocyst stage has an advantage over cleavage embryo transfer which was evaluated in our study.