Abstract
One hundred in vitro fertilization (IVF)-stimulated cycles were analyzed to evaluate the prognostic value of the early follicle-stimulating hormone (FSH), luteinizing hormone (LH), and estradiol (E2) response to the agonist action of leuprolide acetate. Four distinct early E2 response patterns were found. Pattern A (n = 41) showed a prompt elevation of E2, followed by a fall by cycle day 4. Pattern B (n = 16) showed a delayed elevation of E2, followed by a fall by cycle day 6. Pattern C (n = 19) showed a persistent elevation of E2. Pattern D (n = 18) lacked the early E2 response. The clinical pregnancy rates per cycle for patterns A, B, C, and D were 46%, 38%, 16%, and 6%, respectively. A baseline serum FSH level greater than 20 mIU/mL was associated with a lower clinical pregnancy rate, although not statistically significant. Baseline serum LH levels and stimulated FSH and LH levels did not predict IVF outcome. We conclude that the early E2 response pattern to leuprolide acetate is the best early prognostic indicator of IVF outcome.
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