title: Prognosis for clinical pregnancy and delivery after total fertilization failure during conventional in vitro fertilization or intracytoplasmic sperm injection.
abstract: OBJECTIVE
  To determine the prognosis for clinical pregnancy and delivery after total fertilization failure.
  
  
  METHODS
  Retrospective analysis of patient treatment cycles.
  
  
  METHODS
  Private fertility clinic.
  
  
  METHODS
  555 couples who had total fertilization failure during a cycle of conventional in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI).
  
  
  METHODS
  None.
  
  
  METHODS
  Delivery rates, peak estradiol level, number of mature follicles, number of oocytes retrieved, number of mature oocytes, sperm concentration, and sperm motility.
  
  
  RESULTS
  Delivery rates for IVF patients who elected to continue treatment after fertilization failure were 44% per patient, 25% per embryo transfer (ET), and 22% per cycle. Delivery rates for ICSI patients were 36% per patient, 23% per ET, and 18% per cycle. The number of mature oocytes was always statistically significantly lower in the total fertilization failure cycle when compared with fertilization cycles that occurred either before or after, whether ICSI or conventional IVF was involved.
  
  
  CONCLUSIONS
  The prognosis for pregnancy is encouraging in subsequent cycles after total fertilization failure. Fertilization failure was a result of suboptimal response to ovarian stimulation.
authors: Boston IVF, Waltham, Massachusetts 02451, USA. dkinzer@bostonivf.com
authors: Donna R
authors: DR
authors: Kinzer
authors: C Brent
authors: CB
authors: Barrett
authors: R Douglas
authors: RD
authors: Powers
mesh_terms: D000328:Adult; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007246:Infertility / Q000628:therapy*; D008297:Male; D011247:Pregnancy; D011256:Pregnancy Outcome; D018873:Pregnancy Rate; D011379:Prognosis; D012189:Retrospective Studies; D020554:Sperm Injections, Intracytoplasmic; D017211:Treatment Failure