title: [Intramuscular vs vaginal progesterone for luteal support in cycles of in vitro fertilization].
abstract: OBJECTIVE
  To determine the effectiveness of two routes of progesterone supplementation by intramuscular vs. vaginal administration, for luteal phase support of patients undergoing in vitro fertilization (IVF) procedures.
  
  
  METHODS
  Rush Presbyterian St' Lukes Medical Center and Rush Northshore Medical Center in Chicago, Illinois.
  
  
  METHODS
  A total of 79 consecutive patients undergoing IVF procedures between August 1997 and July 1998 were assessed; 42 women received progesterone in oil intramuscularly (i.m.)--50-100 mg daily and in 37 patients progesterone was applied as intravaginal gel (80 mg daily), according to patient's preference.
  
  
  METHODS
  A chart review of the patients' data was performed. There were no statistical differences between the two groups of patients with respect to age, total number of ampoules of gonadotropins used during stimulation, number of oocytes retrieved and fertilized or number of embryos transferred. We then compared pregnancy rates per cycle and pregnancy rates per embryo transferred and miscarriage rates between two groups. Statistical analysis was performed using Student's t test.
  
  
  RESULTS
  There were no statistically significant differences between two groups. The pregnancy rate per cycle for i.m. progesterone group was 33% and for vaginal gel group--25% (p = 0.42). Pregnancy rates per embryo transferred were also similar (8% for i.m. group and 5% for vaginal gel group (p = 0.42). Miscarriage rates were also within the same range: 0.083 for vaginal gel and 12% for i.m. group, (p = 0.48).
  
  
  CONCLUSIONS
  The route of post-transfer progesterone administration does not appear to affect the pregnancy rate in IVF cycles. Therefore the least expensive and the most convenient route of progesterone administration could be utilized.
authors.affiliation: I Kliniki Połoznictwa i Ginekologii AM w Warszawie.
authors.forename: P
authors.initials: P
authors.lastname: Marianowski
authors.forename: E
authors.initials: E
authors.lastname: Radwańska
mesh_terms: D000282:Administration, Intravaginal; D000328:Adult; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007273:Injections, Intramuscular; D008183:Luteal Phase / Q000187:drug effects*; D008875:Middle Aged; D011247:Pregnancy; D011256:Pregnancy Outcome; D011374:Progesterone / Q000008:administration & dosage* / Q000627:therapeutic use; D012189:Retrospective Studies; D013997:Time Factors
chemical_list: D011374:Progesterone