Surrogacy as a good option for treatment of repeated implantation failure: a case series

ABSTRACT

Background: repeated implantation failure [RIF] is defined as pregnancy failure after two to six times with at least ten high grade embryo transfer to uterus. A variety of causes have been anticipated for RIF, including anatomical, autoimmune, genetics, endocrine and thrombotic anomalies. Factors responsible for RIF have important implication regarding treatment however in many couples a perfect cause cannot be found