IMR Press / CEOG / Volume 28 / Issue 4 / pii/2001061

Clinical and Experimental Obstetrics & Gynecology (CEOG) is published by IMR Press from Volume 47 Issue 1 (2020). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on as a courtesy and upon agreement with S.O.G.

Original Research

Marked improvement in clinical pregnancy rates following in vitro fertilization-embryo transfer seen when transfer technique and catheter were changed

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1 Cooper Medical School of Rowan University, Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology & Infertility, Camden, NJ (USA)
Clin. Exp. Obstet. Gynecol. 2001, 28(4), 223–224;
Published: 10 December 2001

Purpose: To compare in vitro fertilization (IVF) outcome with two different embryo transfer (ET) catheters: the Frydman and Wallace catheters. Methods: Retrospective review of outcome of IVF cycles where there was at least one embryo that had assisted hatching prior to transfer at 72 hours according to which catheter was used. Results: Pregnancy rate 17.6% per transfer with Frydman (FET-SET) vs 44.2% for fresh ETs and 15.4% and 43.2% for frozen ETs. The implantation rates for fresh ETs were 7.6% vs 20.0% for fresh and 5.7 vs 21.1% for frozen ETs. Conclusion: The soft Wallace catheter is superior to the stiffer Frydman catheter when transferring embryos subjected to assisted embryo hatching.

Transfer catheter
Assisted embryo hatching
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