IS THERE AN INFLUENCE OF RECIPIENT AGE IN OOCYTE DONATION CYCLES OUTCOMES AFTER CONSTANT OR INCREASING ESTROGEN DOSE FOR ENDOMETRIAL PREPARATION?

Endometrial preparation is a key factor for successful ART outcomes, particularly in oocyte donation (OD) cycles. Estrogen (E2) administration may follow different protocols, including E2 constant dose (CD) or increasing dose (ID), implying in differences on endometrial preparation and receptivity. Until now, no study has considered the recipient age effect on OD cycles success following CD or ID E2 administration. The objective of the present study is to investigate possible differences OD cycles outcomes after CD or ID endometrial preparation taking into consideration the recipients’ age.