title: Avoidance of oocyte retrieval on the weekend through the use of scheduled ovarian hyperstimulation for in vitro fertilization and embryo transfer.
abstract: OBJECTIVE
  To avoid oocyte retrieval for IVF-ET during the weekend, the scheduled method of ovarian hyperstimulation, in which oocyte retrieval is planned in advance for Monday through Wednesday, was evaluated.
  
  
  METHODS
  A retrospective study.
  
  
  METHODS
  The IVF-ET unit of the Department of Obstetrics and Gynecology at Tokushima University Hospital.
  
  
  METHODS
  One hundred seventy-eight cycles in patients undergoing ovarian hyperstimulation for IVF-ET were stimulated according to the scheduled method of ovarian hyperstimulation (scheduled group). One hundred seventy-one cycles in patients of similar age and with comparable causes of infertility were stimulated according to the conventional method of ovarian hyperstimulation for IVF-ET (conventional group).
  
  
  METHODS
  In the scheduled method, under GnRH-a, the day of oocyte retrieval was determined in advance for IVF-ET. Ovarian stimulation with FSH and hMG was started 12 days before oocyte retrieval.
  
  
  METHODS
  The cancellation and clinical pregnancy rates (PRs), the days of oocyte retrieval, and other clinical parameters were evaluated in the two groups.
  
  
  RESULTS
  The cancellation rates in the scheduled and conventional groups were 9.6% and 4.7%, respectively. In about 75% of cycles in the scheduled group, oocyte retrieval was conducted on the scheduled day. When oocyte retrieval was scheduled for Monday through Wednesday, overtime work on the weekend could be avoided in 91% of the cycles without cancellation. The clinical PR was comparable between the two groups.
  
  
  CONCLUSIONS
  The scheduled method of ovarian hyperstimulation for IVF-ET was useful for avoiding oocyte retrieval on the weekend.
authors.affiliation: Department of Obstetrics and Gynecology, School of Medicine, University of Tokushima, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Nakagawa
authors.forename: S
authors.initials: S
authors.lastname: Yamano
authors.forename: M
authors.initials: M
authors.lastname: Senuma
authors.forename: K
authors.initials: K
authors.lastname: Myogo
authors.forename: J
authors.initials: J
authors.lastname: Yamazaki
authors.forename: T
authors.initials: T
authors.lastname: Aono
mesh_terms: D000328:Adult; D006063:Chorionic Gonadotropin / Q000008:administration & dosage; D004624:Embryo Transfer; D005260:Female; D005307:Fertilization in Vitro; D005640:Follicle Stimulating Hormone / Q000008:administration & dosage; D006801:Humans; D008596:Menotropins / Q000008:administration & dosage; D009865:Oocytes; D010062:Ovulation Induction / Q000379:methods*; D011247:Pregnancy; D011256:Pregnancy Outcome; D012189:Retrospective Studies; D013997:Time Factors
chemical_list: D006063:Chorionic Gonadotropin; D008596:Menotropins; D005640:Follicle Stimulating Hormone