Performing the embryo transfer: a guideline
For embryo transfer, pregnancy rates are improved by removal of cervical mucus, use of soft catheter, ultrasound guidance, correct location of the catheter tip, and immediate ambulation.
Volume 107, Issue 4, Pages 882–896
Practice Committee of the American Society for Reproductive Medicine
A systematic review of the literature was conducted which examined each of the major steps of embryo transfer. Recommendations made for improving pregnancy rates are based on interventions demonstrated to be either beneficial or not beneficial.