title: [Sperm parameters in 113 subjects after recent fatherhood did not correlate with WHO standards].
abstract: OBJECTIVE
  This is a descriptive prospective study of semen analysis in 113 men who were candidates for vasectomy as an option for fertility control after a recent event of fertility.
  
  
  METHODS
  Each subject provided a semen sample for the analysis of volume, pH, spermatozoid concentration, mobility, and morphology. The results were compared with the reference values established by WHO.
  
  
  RESULTS
  Different from what was expected, a great proportion of these fertile subjects, 54.9%, showed at least one altered parameter in comparison to minimal values established by WHO. Generally, median values for the whole group were normal: volume 2.4 ml, spermatozoid concentration measured in Makler and Neubauer chambers 89 and 91 millions/ml, respectively; sperm mobility (A + B) 56%; vitality 78%; and normal morphology 79%.
  
  
  CONCLUSIONS
  In this group of fertile subjects we found a high probability to have altered semen parameters, which argues questions the real value and significance of sperm analysis in the diagnosis of a subfertile patient.
authors.affiliation: Departamento de Urología, Universidad de Antioquia, Medellín, Colombia.
authors.forename: Jesús
authors.initials: J
authors.lastname: de los Ríos
authors.forename: Wálter D
authors.initials: WD
authors.lastname: Cardona
authors.forename: Jesús A
authors.initials: JA
authors.lastname: Berdugo
authors.forename: Clemencia
authors.initials: C
authors.lastname: Correa
authors.forename: Arturo
authors.initials: A
authors.lastname: Arenas
authors.forename: Martha
authors.initials: M
authors.lastname: Olivera-Angel
authors.forename: Ruth Beatriz
authors.initials: RB
authors.lastname: Peña
authors.forename: Angela P
authors.initials: AP
authors.lastname: Cadavid
mesh_terms: D000328:Adult; D005298:Fertility; D006801:Humans; D008297:Male; D011446:Prospective Studies; D012016:Reference Values; D013076:Sperm Count; D013081:Sperm Motility; D013094:Spermatozoa; D014944:World Health Organization