title: A case of oocyte and embryo vitrification resulting in clinical pregnancy.
abstract: OBJECTIVE
  To examine a case of clinical pregnancy following oocyte and day 3 embryo vitrification.
  
  
  METHODS
  Case report.
  
  
  METHODS
  Huntington Centro de Medicina Reprodutiva, a private infertility clinic, in São Paolo, Brazil.
  
  
  METHODS
  A 31-year-old woman, gravida 1, para 1, with polycystic ovary syndrome.
  
  
  METHODS
  In vitro fertilization with oocyte and embryo vitrification.
  
  
  METHODS
  Clinical pregnancy defined as fetal cardiac activity on ultrasound examination.
  
  
  RESULTS
  Transvaginal ultrasound examination, at 7 6/7 weeks, revealed a single live intrauterine pregnancy with positive cardiac activity.
  
  
  CONCLUSIONS
  Although further research is needed, this case suggests that repeat vitrification and warming of oocytes and embryos not only are possible but can result in pregnancy.
authors.affiliation: Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan 48109-0617, USA.
authors.forename: Meghan B
authors.initials: MB
authors.lastname: Oakes
authors.forename: Claudia Messias
authors.initials: CM
authors.lastname: Gomes
authors.forename: Joyce
authors.initials: J
authors.lastname: Fioravanti
authors.forename: Paulo
authors.initials: P
authors.lastname: Serafini
authors.forename: Eduardo L A
authors.initials: EL
authors.lastname: Motta
authors.forename: Gary D
authors.initials: GD
authors.lastname: Smith
mesh_terms: D000328:Adult; D015925:Cryopreservation; D046149:Embryo Culture Techniques; D010064:Embryo Implantation; D004624:Embryo Transfer; D004622:Embryo, Mammalian; D005260:Female; D005865:Gestational Age; D006340:Heart Rate, Fetal; D006801:Humans; D007247:Infertility, Female / Q000209:etiology / Q000628:therapy*; D054315:Oocyte Retrieval; D009865:Oocytes; D011085:Polycystic Ovary Syndrome / Q000150:complications* / Q000628:therapy; D011247:Pregnancy; D020554:Sperm Injections, Intracytoplasmic; D016896:Treatment Outcome; D016216:Ultrasonography, Prenatal