title: Spontaneous pregnancy in couples waiting for artificial insemination donor because of severe male infertility.
abstract: OBJECTIVE
  To assess the spontaneous fertility in couples with severe seminal conditions while waiting for artificial insemination donor.
  
  
  METHODS
  Prospective follow-up during a period of 24 months.
  
  
  METHODS
  University Medical School.
  
  
  METHODS
  There were 285 couples in which the male had a very severe seminal pathology: 166 azoospermia, 86 oligozoospermia and 33 severe asthenozoospermia.
  
  
  METHODS
  Pregnancy rates after being included on waiting list.
  
  
  RESULTS
  The spontaneous pregnancy rate was 3.2% (9/285), per month spontaneous pregnancy rate being 0.13%. Spontaneous pregnancy rate was 0% in azoospermia (0/166). versus 7.6% (9/119) in non-azoospermia cases. Spontaneous pregnancy rate was 8.5% (4/47) in the group with less than 0.1 million motile sperm/cc, 6.5% (3/46) in the group between 0.1 and 1 million/cc and 7.7% (2/26) in the group with 1-2 million/cc.
  
  
  CONCLUSIONS
  In a 2-year follow-up, pregnancy rate among non-azoospermic couples before undergoing artificial insemination was 7.6%. Extramatrimonial pregnancy (based on anamnesis and sperm analysis) seemed to be uncommon. Even in cases with less than 0.1 million of motile sperm/cc there was not a negligible spontaneous pregnancy rate.
authors.affiliation: Department of Obstetrics and Gynecology, País Vasco University, Hospital from Cruces, Baracaldo, Vizcaya, Spain.
authors.forename: R
authors.initials: R
authors.lastname: Matorras
authors.forename: J
authors.initials: J
authors.lastname: Diez
authors.forename: B
authors.initials: B
authors.lastname: Corcóstegui
authors.forename: G
authors.initials: G
authors.lastname: Gutiérrez de Terán
authors.forename: J M
authors.initials: JM
authors.lastname: García
authors.forename: J I
authors.initials: JI
authors.lastname: Pijoan
authors.forename: F J
authors.initials: FJ
authors.lastname: Rodríguez-Escudero
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007248:Infertility, Male; D007316:Insemination, Artificial, Heterologous; D008297:Male; D009845:Oligospermia; D011247:Pregnancy; D011446:Prospective Studies; D013076:Sperm Count