Effect of Intrauterine Navigation Using Intrauterine Insemination Catheter for Mock Embryo Transfer Prior to Day 3 Embryo Transfer on Pregnancy Rate: A Pilot Study

Objective: To evaluate the effect of intrauterine navigation using intrauterine insemination catheter (IUI) one day prior to day 3 embryo transfer (ET) on pregnancy rate. Design: Pilot randomized controlled study. Setting: Tertiary referral center, King Fahad Medical City. Patients: Patients who underwent ET during the period of the study after two or less in-vitro fertilization failures and fulfilled the inclusion criteria. Interventions: Mock ETs were performed on day 2 post oocytes retrieval using intrauterine insemination catheter, followed by day 3 ET. Main Outcome Measure: Pregnancy rate. Key Words: embryo transfer, mock embryo transfer, endometrial receptivity, endometrial scratching, IVF.