title: Luteal function associated with single, multiple and ectopic embryo implantation in natural cycles or after ovarian hyperstimulation for in-vitro fertilization/gamete intra-fallopian transfer.
abstract: Levels of reproductive steroids and gonadotrophins were analysed retrospectively during the peri-implantation period following non-conceptional and conceptional natural cycles and in cycles associated with ovarian hyperstimulation for in-vitro fertilization or gamete intra-Fallopian transfer. In cycles not associated with conception, the luteal phase of hyperstimulated cycles (n = 100) was characterized by higher serum progesterone and oestradiol levels (P less than 0.01) and with an earlier decline in steroids than in natural cycles (n = 21). On day 11 (day of oocyte recovery = day 0), the level of progesterone in twin (n = 59) and triplet (n = 13) pregnancies was higher than singleton pregnancies (n = 176) (P less than 0.006, P less than 0.006 respectively) while those destined to abort (n = 66) had lower progesterone levels (P less than 0.01). Ectopic implantation (n = 11) had the lowest progesterone concentrations on day 11 (P less than 0.01) and this may imply a delay in corpus luteum rescue or a later implantation time than intrauterine conception.
authors.affiliation: Department of Obstetrics and Gynaecology, University of Adelaide, South Australia.
authors.forename: L
authors.initials: L
authors.lastname: Wang
authors.forename: G M
authors.initials: GM
authors.lastname: Warnes
authors.forename: C A
authors.initials: CA
authors.lastname: Kirby
authors.forename: C D
authors.initials: CD
authors.lastname: Matthews
authors.forename: R J
authors.initials: RJ
authors.lastname: Norman
mesh_terms: D002996:Clomiphene / Q000494:pharmacology; D003338:Corpus Luteum / Q000502:physiology*; D004958:Estradiol / Q000097:blood*; D005260:Female; D005307:Fertilization in Vitro; D015181:Gamete Intrafallopian Transfer; D006801:Humans; D008183:Luteal Phase / Q000502:physiology; D007986:Luteinizing Hormone / Q000097:blood; D008596:Menotropins / Q000494:pharmacology; D010053:Ovary / Q000187:drug effects; D011247:Pregnancy; D011256:Pregnancy Outcome; D011271:Pregnancy, Ectopic / Q000097:blood*; D011272:Pregnancy, Multiple / Q000097:blood*; D011374:Progesterone / Q000097:blood*; D012189:Retrospective Studies
chemical_list: D002996:Clomiphene; D011374:Progesterone; D004958:Estradiol; D008596:Menotropins; D007986:Luteinizing Hormone