passages: 786
passages: document
passages: Prospective study of short and ultrashort regimens of gonadotropin-releasing hormone agonist in an in vitro fertilization program . OBJECTIVE To assess the usefulness of the ultrashort regimen of gonadotropin-releasing hormone agonist ( GnRH-a ) in ovulation induction in an in vitro fertilization ( IVF ) program . DESIGN A prospective randomized trial comparing short and ultrashort regimens of GnRH-a . SETTING Aberdeen Assisted Reproduction Unit . PATIENTS Forty-eight patients having IVF for the first time were randomized between the two protocols . MAIN OUTCOME MEASURES Response to ovarian stimulation and occurrence of spontaneous luteinizing hormone ( LH ) surges . RESULTS In ovulation induction , fertilization , and pregnancy rates the ultrashort regimen produces results that were no different to the short regimen but it did not always prevent an LH surge . CONCLUSION The ultrashort regimen can be a useful alternative for ovarian stimulation of patients undergoing IVF .
entities: 787
entities: Intervention_Pharmacological
entities: gonadotropin-releasing hormone agonist
entities: 788
entities: Intervention_Pharmacological
entities: gonadotropin-releasing hormone agonist ( GnRH-a )
entities: 789
entities: Intervention_Pharmacological
entities: GnRH-a .
entities: 790
entities: Outcome_Other
entities: usefulness
entities: 791
entities: Outcome_Physical
entities: Response to ovarian stimulation and occurrence of spontaneous luteinizing hormone ( LH ) surges .
entities: 792
entities: Outcome_Physical
entities: ovulation induction , fertilization , and pregnancy rates
entities: 793
entities: Outcome_Physical
entities: LH surge .
entities: 794
entities: Participant_Condition
entities: in vitro fertilization ( IVF )
entities: 795
entities: Participant_Sample-size
entities: Forty-eight
entities: 796
entities: Participant_Condition
entities: patients having IVF for the first time
entities: 797
entities: Participant_Condition
entities: undergoing IVF