title: Study of two strategies to induce follicular wave emergence for assisted reproductive treatments (ART)-a preliminary trial.
abstract: OBJECTIVE
  This study aimed to induce follicular wave emergence (FWE) using pharmacological (recombinant hCG administration) or mechanical (aspiration of dominant follicle) interventions in infertile women.
  
  
  METHODS
  Sixteen infertile women (≤35 years) with indications for in vitro fertilization due to tubal and/or male factor infertility were randomized into three groups: control (n = 6), pharmacological (n = 5) and mechanical (n = 5) groups. Women in both experimental groups underwent serial transvaginal sonograms (TVS) from menstrual cycle day 10 until identification of a dominant follicle ≥15 mm. Women in the pharmacological group received 250 μg of recombinant-hCG to induce ovulation, and resumed serial TVS 2 days later. In the mechanical group, dominant and subordinate follicles ≥10 mm were aspirated, and daily TVS was resumed on the following day. An increased pool of follicles ≥5 and ≤9 mm after interventions characterized FWE. Women in the control group underwent ovulation induction (OI) with 150 IU/day of recombinant follicle-stimulating hormone started on menstrual cycle day 3 (D3). OI was started on the day of FWE in the experimental groups. Endometrial asynchrony with development of the embryo was expected in the experimental groups. Therefore, all viable embryos were cryopreserved and transferred in an endometrial-stimulated cycle.
  
  
  RESULTS
  The number of follicles ≥5 and ≤9 mm increased after the interventions in both experimental groups (p < .001), indicating induction of FWE. OI outcomes were similar among the groups.
  
  
  CONCLUSIONS
  The pharmacological and mechanical interventions are efficient in inducing FWE; outcomes of OI synchronized with FWE should be further investigated.
authors.affiliation: Division of Gynecology, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil, paulobianchi35@gmail.com.
authors.forename: Paulo H M
authors.initials: PH
authors.lastname: Bianchi
authors.forename: Lais M
authors.initials: LM
authors.lastname: Viera
authors.forename: Gabriela R F C A
authors.initials: GR
authors.lastname: Gouveia
authors.forename: André M
authors.initials: AM
authors.lastname: Rocha
authors.forename: Pietro S
authors.initials: PS
authors.lastname: Baruselli
authors.forename: Edmund C
authors.initials: EC
authors.lastname: Baracat
authors.forename: Paulo C
authors.initials: PC
authors.lastname: Serafini
mesh_terms: D000328:Adult; D006063:Chorionic Gonadotropin / Q000494:pharmacology / Q000627:therapeutic use; D005260:Female; D005640:Follicle Stimulating Hormone / Q000494:pharmacology / Q000627:therapeutic use*; D006801:Humans; D007247:Infertility, Female / Q000188:drug therapy / Q000628:therapy*; D008183:Luteal Phase / Q000187:drug effects*; D006080:Ovarian Follicle / Q000254:growth & development / Q000502:physiology*; D010062:Ovulation Induction / Q000379:methods*; D010865:Pilot Projects; D027724:Reproductive Techniques, Assisted; D016896:Treatment Outcome
chemical_list: D006063:Chorionic Gonadotropin; D005640:Follicle Stimulating Hormone