Minimal ovarian hyperstimulation for in vitro fertilization using sequential clomiphene citrate and gonadotropin with or without the addition of a gonadotropin-releasing hormone antagonist

Shaun C. Williams, William E. Gibbons, Suheil J. Muasher, Sergio Oehninger

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

Objective: To compare the results of a minimal-stimulation protocol with those of a standard protocol used for IVF. Design: Retrospective, controlled study. Setting: University center. Patient(s): Fifty-five patients undergoing IVF using a minimal-stimulation protocol with or without adjuvant therapy with a GnRH antagonist. A control group consisted of age- and diagnosis-matched patients undergoing a standard long GnRH agonist (GnRH-a)-gonadotropin stimulation during the same time period. Intervention(s): Clomiphene citrate and gonadotropins, with or without the GnRH antagonist ganirelix. Main Outcome Measure(s): Oocytes recovered and pregnancy rates. Result(s): The number of oocytes retrieved was significantly lower for the minimal-stimulation regimen compared with the case of the long GnRH-a protocol (4.8 ± 2.6 vs. 16.2 ± 7.5, respectively). The clinical pregnancy rate per transfer, however, was not significantly different between the two regimens (37% vs. 41%, minimal stimulation vs. long GnRH-a protocol, respectively). The addition of ganirelix resulted in at least the same pregnancy outcome as compared with the case of cycles without the antagonist. Conclusion(s): Minimal stimulation using clomiphene citrate followed by gonadotropin for IVF results in pregnancy rates equal to the standard long GnRH-a-gonadotropin protocol. The addition of ganirelix resulted in at least similar results with the advantage of eliminating the occurrence of a premature endogenous LH surge.

Original languageEnglish (US)
Pages (from-to)1068-1072
Number of pages5
JournalFertility and sterility
Volume78
Issue number5
DOIs
StatePublished - Nov 1 2002
Externally publishedYes

Keywords

  • GnRH antagonist
  • IVF
  • Minimal stimulation
  • Pregnancy rate

ASJC Scopus subject areas

  • Reproductive Medicine
  • Obstetrics and Gynecology

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