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  • Title: Luteal support with intravaginal progesterone increases clinical pregnancy rates in women with polycystic ovary syndrome using letrozole for ovulation induction.
    Author: Montville CP, Khabbaz M, Aubuchon M, Williams DB, Thomas MA.
    Journal: Fertil Steril; 2010 Jul; 94(2):678-83. PubMed ID: 19515366.
    Abstract:
    OBJECTIVE: To determine the effect of intravaginal micronized P on pregnancy rates in clomiphene citrate and letrozole ovulation induction cycles in women with polycystic ovary syndrome (PCOS). DESIGN: Retrospective chart review. SETTING: University-based assisted reproductive technology program. PATIENTS: Women with PCOS who underwent ovulation induction with either clomiphene citrate (n = 90) or letrozole (n = 31) from January 2002 to December 2008. INTERVENTION(S): Clomiphene citrate (50-250 mg x 5 days) or letrozole (5 mg x 5 days) were used for ovulation induction. After either intercourse or IUI, patients received intravaginal micronized P (200 mg twice daily) according to prescribing physician preference. MAIN OUTCOME MEASURE(S): Clinical pregnancy rate. RESULT(S): In clomiphene cycles, clinical pregnancies were documented in 15.3% of cycles (19 of 124) in the P group, compared with 12.1% (11 of 91) of the non-P group. In letrozole cycles, clinical pregnancies were documented in 21.1% of cycles (8 of 38) in the P group, compared with none (0 of 13) in the non-P group. CONCLUSION(S): Women with PCOS who used letrozole for ovulation induction had higher clinical pregnancy rates when using intravaginal P support. Luteal supplementation with P should be strongly considered in women with PCOS, especially in those using letrozole for ovulation induction.
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