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

F. M. Irianni, L. L. Veeck, J. P. Toner, S. J. Muasher

Research output: Contribution to journalArticle

Abstract

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 ≤3.4 ng/ml than when they were ≥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.

Original languageEnglish (US)
Pages (from-to)797-800
Number of pages4
JournalHuman Reproduction
Volume7
Issue number6
DOIs
StatePublished - Jul 1992

Keywords

  • Cryopreserved
  • Frozen
  • Natural cycles
  • Pre-embryos
  • Transfer

ASJC Scopus subject areas

  • Reproductive Medicine
  • Obstetrics and Gynecology

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