title: A prospective study of GnRH long agonist versus flexible GnRH antagonist protocol in PCOS: Indian experience.
abstract: BACKGROUND
  Polycystic ovarian syndrome is a common endocrine disorder of reproductive age women. Many controlled ovarian stimulation (COS) strategies have been offered for the treatment of patients with PCOS undergoing in vitro fertilization, but the optimal protocol is still a controversy. There is no compelling evidence for the advantage of one stimulation protocol over the other.
  
  
  METHODS
  This is a single-center prospective controlled study comparing long agonist and antagonist protocol in PCOS women.
  
  
  RESULTS
  There was no significant difference in live birth rate and clinical pregnancy rate. Rate of ovarian hyperstimulation syndrome was significantly higher in the agonist group. Number of oocytes retrieved, number of follicles and peak estradiol levels were significantly more in the agonist group.
  
  
  CONCLUSIONS
  The GnRH antagonist protocol is an equally effective but safer protocol in PCOS patients compared with the long agonist protocol.
authors.affiliation: Department of Reproductive Medicine Medicine Unit, Bangalore Assisted Conception Centre, Bangalore, India.
authors.forename: Harpreet
authors.initials: H
authors.lastname: Kaur
authors.forename: Deepika
authors.initials: D
authors.lastname: Krishna
authors.forename: Nivedita
authors.initials: N
authors.lastname: Shetty
authors.forename: Sandhya
authors.initials: S
authors.lastname: Krishnan
authors.forename: Ms
authors.initials: M
authors.lastname: Srinivas
authors.forename: Kamini Arvind
authors.initials: KA
authors.lastname: Rao