PMID: 11331631May 2, 2001Paper

Ultrasound-guided embryo transfer: immediate withdrawal of the catheter versus a 30 second wait

Human Reproduction
F MartinezP N Barri

Abstract

It is essential to deposit embryos as gently as possible during IVF, avoiding manoeuvres that might trigger uterine contractions which could adversely affect the results of this treatment. The time during which the embryo transfer catheter remains in the cervical canal might be related to stimulation of contractions. This study investigates the influence that the time interval before withdrawal of the catheter after ultrasound (US)-guided embryo deposit might have on the pregnancy rate in patients under IVF cycles. A total of 100 women about to undergo transfer of at least two optimal embryos was studied. The women were prospectively randomized into two groups: (i) slow withdrawal of the catheter immediately after embryo deposit (n = 51); and (ii) a 30 s delay before catheter withdrawal (n = 49). The pregnancy rates for transfer in the two groups were 60.8 and 69.4% respectively, with no significant differences. There were no statistically significant differences in pregnancy rates between the two patient groups. The results indicate either that the waiting interval was insufficient to detect differences, or that the retention time before withdrawing the catheter is not a factor that influences pregnancy rate.

References

Dec 1, 1992·Baillière's Clinical Obstetrics and Gynaecology·I S Fraser
Jul 1, 1989·Fertility and Sterility·A WisantoA C Van Steirteghem
May 15, 1999·Human Reproduction·A K KanO O Ola-ojo
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Citations

Oct 16, 2003·Placenta·P E Levi SettiL Negri
May 5, 2005·Current Opinion in Obstetrics & Gynecology·Hassan N Sallam
Apr 23, 2010·Fertility and Sterility·Lindsay Mains, Bradley J Van Voorhis
Jul 11, 2009·Gynécologie, obstétrique & fertilité·C SiferC Poncelet
Mar 5, 2016·Fertility and Sterility·William B Schoolcraft
Jul 29, 2015·Reproductive Biology and Endocrinology : RB&E·Hwang KwonEun-Kyung Kim
Mar 18, 2016·The Cochrane Database of Systematic Reviews·Julie BrownAhmed M Abou-Setta
Feb 27, 2016·The Journal of Obstetrics and Gynaecology Research·Sotirios H SaravelosTin-Chiu Li
Jul 3, 2021·Journal of Clinical Medicine·Lewis NancarrowDharani K Hapangama

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