title: Ongoing twin pregnancy after rescue intracytoplasmic sperm injection of unfertilized abnormal oocytes.
abstract: OBJECTIVE
  To report a case of an ongoing twin pregnancy resulting from rescue intracytoplasmic sperm injection (ICSI) after failed fertilization of morphologically abnormal oocytes.
  
  
  METHODS
  Case report.
  
  
  METHODS
  Tertiary center for assisted reproductive technology (ART).
  
  
  METHODS
  A 28-year-old woman with primary infertility due to tubal obstruction.
  
  
  METHODS
  Rescue ICSI after failed IVF insemination.
  
  
  METHODS
  Clinical pregnancy.
  
  
  RESULTS
  Successful ongoing twin pregnancy.
  
  
  CONCLUSIONS
  With failed fertilization of oocytes with abnormal morphology after IVF, early rescue ICSI may increase the fertilization rates and result in an ongoing pregnancy.
authors.affiliation: Toronto Centre for Advanced Reproductive Technology (TCART), Toronto, Canada. nesfand@excite.com
authors.forename: Navid
authors.initials: N
authors.lastname: Esfandiari
authors.forename: E Anne
authors.initials: EA
authors.lastname: Claessens
authors.forename: Hasan
authors.initials: H
authors.lastname: Burjaq
authors.forename: Lynda
authors.initials: L
authors.lastname: Gotlieb
authors.forename: Robert F
authors.initials: RF
authors.lastname: Casper
mesh_terms: D000328:Adult; D004624:Embryo Transfer; D005184:Fallopian Tube Diseases / Q000150:complications* / Q000473:pathology / Q000628:therapy; D005260:Female; D005307:Fertilization in Vitro; D005865:Gestational Age; D006801:Humans; D007247:Infertility, Female / Q000209:etiology / Q000473:pathology / Q000628:therapy*; D054315:Oocyte Retrieval; D009865:Oocytes / Q000473:pathology*; D010062:Ovulation Induction; D011247:Pregnancy; D011272:Pregnancy, Multiple; D020554:Sperm Injections, Intracytoplasmic; D017211:Treatment Failure; D014427:Twins