The Final Position of Embryo-Associated Air at Time of Embryo Transfer (ET) is Unlikely To Be a Factor in Predicting Success in Donor Egg IVF Recipient Treatment Cycles

Abstract

In cases of pregnancy achieved through ET, approximately 80% of embryos implant in areas to which they initially are transferred and the exact area of embryo placement in the uterine cavity can be localized precisely by trans-abdominal ultrasound guided ETs. Recent literature suggests that a shallow ET improves pregnancy rates. But the embryos don’t seem to retain their place of deposition at the time of ET. We observed a transient motion of the ET associated air-bubbles and performed this prospective study to determine if this air-bubble movement at the time of ETs can predict a successful outcome.