Abstract
Many patient and embryo factors influence the outcome of assisted reproductive technology
(ART) treatment. The predictors for a successful ART cycle include female age, ovarian
reserve, embryo quality, endometrial receptivity, and embryo transfer (ET) technique.
ET, the final step of ART, has recently been noted as a crucial step affecting ART
success. Variables affecting pregnancy rates following ET include ultrasound guidance,
ease of ET transfer, catheter type, transfer and catheter-loading technique, blood
or mucus effects, retained embryos, trial transfer, the physician's experience, and
catheter tip placement. Despite the lack of consensus regarding the optimal ET technique,
it is generally recommended that during ET, the disruption of the endometrium and
the induction of uterine contractions should be avoided. The exposure of embryos to
the ambient conditions should be minimized, and the embryo(s) should be placed at
an optimal position within the fundal region of the uterine cavity.
Keywords
embryo transfer technique - assisted reproductive technology - successful embryo transfer
