title: Comparison of the efficacy of two vaginal progesterone formulations, Crinone 8% gel and Utrogestan capsules, used for luteal support in blastocyst stage embryo transfers.
abstract: OBJECTIVE
  To compare the efficacy of two vaginal progesterone formulations, Crinone gel and Utrogestan capsules, for luteal phase support in blastocyst stage embryo transfers.
  
  
  METHODS
  We analyzed 460 consecutive cycles in patients undergoing in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI)-blastocyst transfer (BT) treatment at our institution between January 2004 and December 2007. Patients applied either Crinone 8% vaginal gel (90 mg, once daily) or Utrogestan vaginal capsules (200 mg, four times daily) for luteal supplementation. Progesterone was administered from the day of oocyte retrieval to pregnancy confirmation. Clinical pregnancy and implantation rates were the main outcome measures.
  
  
  RESULTS
  The clinical pregnancy rate (58.7% vs. 44.3%) and implantation rate (32.04% vs. 23.89%) were significantly higher in the Crinone group compared with the Utrogestan group after IVF/ICSI-BT treatment.
  
  
  CONCLUSIONS
  Luteal phase support with Crinone 8% vaginal gel (90 mg daily) resulted in better clinical pregnancy and implantation rates than Utrogestan vaginal capsules (200 mg, four times daily) in IVF/ICSI-BT cycles.
authors.affiliation: Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan.
authors.forename: Li-Jung
authors.initials: LJ
authors.lastname: Wang
authors.forename: Fu-Jen
authors.initials: FJ
authors.lastname: Huang
authors.forename: Fu-Tsai
authors.initials: FT
authors.lastname: Kung
authors.forename: Pin-Yao
authors.initials: PY
authors.lastname: Lin
authors.forename: Shiuh Young
authors.initials: SY
authors.lastname: Chang
authors.forename: Kuo-Chung
authors.initials: KC
authors.lastname: Lan
mesh_terms: D000282:Administration, Intravaginal; D000328:Adult; D002214:Capsules / Q000008:administration & dosage; D046149:Embryo Culture Techniques; D010064:Embryo Implantation / Q000187:drug effects; D004624:Embryo Transfer; D005260:Female; D005307:Fertilization in Vitro; D005782:Gels / Q000008:administration & dosage; D006801:Humans; D007247:Infertility, Female / Q000188:drug therapy*; D008183:Luteal Phase / Q000187:drug effects* / Q000502:physiology; D011247:Pregnancy; D018873:Pregnancy Rate; D011374:Progesterone / Q000008:administration & dosage / Q000031:analogs & derivatives*; D020554:Sperm Injections, Intracytoplasmic
chemical_list: D002214:Capsules; C400424:Crinone; D005782:Gels; D011374:Progesterone