title: Luteal phase oocyte retrieval and in vitro maturation is an optional procedure for urgent fertility preservation.
abstract: OBJECTIVE
  To compare the results of in vitro maturation (IVM) of oocytes for fertility preservation performed during the luteal phase of the cycle with those of IVM performed during the follicular phase.
  
  
  METHODS
  Retrospective chart review (August 2007 to June 2009).
  
  
  METHODS
  Academic tertiary referral fertility center.
  
  
  METHODS
  Cancer patients who underwent treatment for fertility preservation.
  
  
  METHODS
  IVM treatment during either luteal or follicular phase.
  
  
  METHODS
  Number of oocytes, maturation and fertilization rates, and number of oocytes and embryos that were frozen.
  
  
  RESULTS
  Eighteen cancer patients underwent IVM fertility preservation, five in their luteal phase and 13 in their follicular phase. The baseline characteristics of both groups were similar. There were no significant differences in the number of retrieved oocytes, maturation rates, fertilization rates, or the total number of oocytes and embryos that were cryopreserved.
  
  
  CONCLUSIONS
  These results suggest that IVM during the luteal phase can be offered to patients as an optional treatment for urgent fertility preservation when there is insufficient time for conventional follicular phase oocyte retrieval before chemotherapy must be initiated.
authors.affiliation: IVF Unit, Division of Obstetrics and Gynecology, Sheba Medical Center, Tel-Hashomer, Israel. ettiemaman@gmail.com
authors.forename: Ettie
authors.initials: E
authors.lastname: Maman
authors.forename: Dror
authors.initials: D
authors.lastname: Meirow
authors.forename: Masha
authors.initials: M
authors.lastname: Brengauz
authors.forename: Hila
authors.initials: H
authors.lastname: Raanani
authors.forename: Jehushua
authors.initials: J
authors.lastname: Dor
authors.forename: Ariel
authors.initials: A
authors.lastname: Hourvitz
mesh_terms: D000293:Adolescent; D000328:Adult; D001755:Blastocyst; D015925:Cryopreservation; D005260:Female; D005298:Fertility; D005307:Fertilization in Vitro / Q000379:methods*; D005498:Follicular Phase; D006801:Humans; D007247:Infertility, Female / Q000209:etiology* / Q000628:therapy*; D008183:Luteal Phase; D009369:Neoplasms / Q000150:complications*; D054315:Oocyte Retrieval / Q000379:methods*; D009865:Oocytes / Q000166:cytology; D012189:Retrospective Studies; D055815:Young Adult