title: Sextuplets: an unusual complication of single embryo transfer.
abstract: OBJECTIVE
  To describe an unusual case of a sextuplet gestation after IVF and transfer of a single blastocyst.
  
  
  METHODS
  Case report.
  
  
  METHODS
  University-based IVF clinic.
  
  
  METHODS
  A 32-year-old female with secondary infertility undergoing IVF-ET.
  
  
  METHODS
  Transvaginal oocyte retrieval, transfer of a single blastocyst, and multifetal pregnancy reduction.
  
  
  METHODS
  Ultrasound determination of pregnancy viability.
  
  
  RESULTS
  Six intrauterine gestational sacs, each with a fetus having cardiac activity, reduced to a triplet gestation.
  
  
  CONCLUSIONS
  Physicians should consider advising patients undergoing IVF-ET to abstain from unprotected intercourse at least 4 days before the anticipated oocyte retrieval. Incomplete aspiration of ovarian follicles is uncommon but not rare and can lead to a higher order multiple pregnancy if recent unprotected intercourse has occurred in this setting.
authors.affiliation: University of Iowa Hospitals and Clinics, Iowa City, Iowa 52242, USA. Lindsay-mains@uiowa.edu
authors.forename: Lindsay
authors.initials: L
authors.lastname: Mains
authors.forename: Ginny
authors.initials: G
authors.lastname: Ryan
authors.forename: Amy
authors.initials: A
authors.lastname: Sparks
authors.forename: Brad
authors.initials: B
authors.lastname: Van Voorhis
mesh_terms: D000328:Adult; D003376:Counseling; D004624:Embryo Transfer; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007247:Infertility, Female / Q000209:etiology / Q000628:therapy*; D009099:Multiple Birth Offspring; D054315:Oocyte Retrieval / Q000009:adverse effects*; D010062:Ovulation Induction / Q000009:adverse effects*; D011085:Polycystic Ovary Syndrome / Q000150:complications / Q000628:therapy; D017410:Practice Guidelines as Topic; D011247:Pregnancy; D018607:Pregnancy Reduction, Multifetal; D016216:Ultrasonography, Prenatal; D047568:Unsafe Sex