Influence of number of pre-embryos transferred, progesterone level and oestradiol/progesterone ratio at thaw on pregnancy results during replacement of cryopreserved pre-embryos in natural cycles.

Journal Article (Journal Article)

When frozen-thawed pre-embryos were transferred in a natural menstrual cycle, a clinical pregnancy rate of 22% per transfer cycle was obtained. The pregnancy rates were higher when serum progesterone levels at thaw were less than or equal to 3.4 ng/ml than when they were greater than or equal to 3.5 ng/ml. This was reflected in a significantly higher oestradiol/progesterone ratio at thaw in the conception cycles than in the non-conception cycles.

Full Text

Duke Authors

Cited Authors

  • Irianni, FM; Veeck, LL; Toner, JP; Muasher, SJ

Published Date

  • July 1992

Published In

Volume / Issue

  • 7 / 6

Start / End Page

  • 797 - 800

PubMed ID

  • 1500477

International Standard Serial Number (ISSN)

  • 0268-1161

Digital Object Identifier (DOI)

  • 10.1093/oxfordjournals.humrep.a137739


  • eng

Conference Location

  • England