Journal
FERTILITY AND STERILITY
Volume 92, Issue 2, Pages 508-514Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.fertnstert.2008.06.036
Keywords
Premature luteinization; IVF; pregnancy rate; progesterone; estradiol; ovarian reserve; gonadotropin releasing hormone agonist
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Objective: To evaluate the relationship between serum P:E-2 ratio on the day of hCG administration and the clinical outcomes in infertile women with normal ovarian reserve treated with a long GnRH agonist (GnRH-a) protocol. Design: Retrospective analysis of IVF-embryo transfer data. Setting: University teaching hospital. Patient(s): One hundred thirty-nine infertile women with normal ovarian reserve, who received IVF-embryo transfer with a long GnRH-a protocol. Intervention(s): Cycles were grouped according to whether premature luteinization (PL) appeared on the day of hCG administration. Premature luteinization was defined as a P:E-2 ratio >= 1.2 by using receiver operator characteristic analysis. Main Outcome Measure(s): Treatment cycle hormonal characteristics and clinical outcomes. Result(s): The P:E-2 ratio on the day of hCG administration was significantly higher in the PL (n = 41) compared with the non-PL (n = 98) group (2.4 +/- 1.5 and 0.6 +/- 0.3, respectively). The mean number of oocytes retrieved in the PL and non-PL groups were 4.2 +/- 2.8 and 12.7 +/- 6.6, respectively. However, the difference between the clinical pregnancy rates (PR) in the PL and non-PL groups was not statistically significant (29.3% vs. 34.5%). In a logistic regression analysis, the P:E-2, ratio showed no statistically significant correlation with pregnancy outcome. Conclusion(s): The increased serum P:E-2 ratio on the day of hCG administration, as an indicator of PL, has a poor predictive value on IVF outcomes in infertile women with normal ovarian reserve treated with a long GnRH-a protocol. (Fertil Steril (R) 2009;92:508-14. (C) 2009 by American Society for Reproductive Medicine.)
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