Embryo Transfer in In-Vitro Fertilization: Factors Affecting Successful Outcome

Abstract

Embryo transfer is the last component of series of events in the process of in vitro fertilization treatment. Events happening at the embryo transfer stage if not well managed could jeopardize the entire process with unpleasant consequences. It is considered to be a critical determinant of clinical outcome in the entire in vitro fertilization procedure. Consequently, factors affecting its efficiency are very vital in the determination of clinical pregnancy, implantation, ongoing pregnancy and live birth rates. Some factors have been clearly seen to be beneficial to the positive outcome of in vitro fertilization, while the benefit of the other factors is still very questionable or have been dismissed. The most important of all factors are ultrasound guided embryo transfer and the use of soft flexible catheters for embryo transfer. Others are removal of cervical mucus before the transfer process, accurate placement of the embryo within the endometrial cavity and immediate ambulation after embryo transfer.