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Updated: Jul 20, 2026
Utero-tubal Embryo Transfer and Vasectomy in the Mouse Model
Published on: February 28, 2014
Ultrasonographic-guided embryo transfer does not enhance pregnancy rates compared with embryo transfer based on
Marieke J Lambers1, Erbil Dogan, Hanna Kostelijk
1Department of Obstetrics, Gynecology and Reproductive Medicine, Free University Medical Center (VUmc), Amsterdam, The Netherlands. mj.lambers@vumc.nl
Objective:
To compare pregnancy rates (PRs) after ultrasound-guided embryo transfer and embryo transfer based on ultrasonographic length measurement.
Design:
Prospective intervention group combined with retrospective control group.
Setting:
University fertility clinic.
Patient(S):
Patients undergoing IVF and intracytoplasmic sperm injection.
Intervention(S):
Transabdominal ultrasonographic guidance at embryo transfer.
Main Outcome Measure(S):
Pregnancy and implantation rates.
Result(S):
In 367 ultrasound-guided embryo transfers clinical PR, ongoing PR, and implantation rate were 35.1%, 31.1%, and 24.3%, respectively. In 363 embryo transfers based on previous ultrasonographic length measurement, the rates were 33.9%, 29.5%, and 24.2%, respectively. There were no statistical significant differences between the groups.
Conclusion(S):
Ultrasonographic guidance does not show any benefit in terms of PR and implantation rate compared to previous ultrasonographic length measurement, an other precise and atraumatic transfer technique.
