title: [Changes in a semen analysis related to spontaneous pregnancy in patients with infertility history].
abstract: OBJECTIVE
  To describe changes in a semen analysis before getting a spontaneous pregnancy.
  
  
  METHODS
  In an observational, descriptive, longitudinal and retrospective study a semen analysis of the first evaluation of 96 patients was compared with the exam accomplished before getting a spontaneous pregnancy. A descriptive analysis of the semen exam was performed and the results of both exams were compared by means of at Student test with statistical significance for p < 0.05.
  
  
  RESULTS
  In the first analysis, the volume, density, mobility, normal morphology, total number of mobile cells and total number of mobile cells with normal morphology (TNMCNM) were 2.45 +/- 1.39 mL, 79 +/- 43 million/mL, 40 +/- 21%, 27 +/- 14%, 84 +/- 84 million and 23 +/- 29 million, respectively, and in the final analysis were 2.6 +/- 1.26 mL, 79 +/- 42 million/mL, 43 +/- 21%, 28 +/- 14%, 97 +/- 98 million and 28 +/- 33 million, respectively. None of them were different. In four patients with low testosterone and a LH/FS > or = 1 ratio, volume increased from 1 +/- 0.31 to 1.65 +/- 0.17 mL and normal morphology from 22 +/- 7 to 31 +/- 5. Both variables were different. In six patients with high prolactine and low testosterone or low FSH, density increased from 56 +/- 21 to 114 +/- 18 million/mL and TNMCNM from 14 +/- 12 to 46 +/- 32 million. Both variables were different.
  
  
  CONCLUSIONS
  Only those patients with low testosterone and a LH/FSH > or = 1 rate had an increase of semen volume and normal morphology. Those with high prolactine-low testosterone or high prolactine-low FSH had an increase of the total mobile cells and the total mobile cells with normal morphology. There were not changes in any semen variable of the other patients.
authors.affiliation: Clínica de Andrología, Instituto Nacional de Perinatología, Lomas Virreyes, México, DF.
authors.forename: Armando
authors.initials: A
authors.lastname: Juárez Bengoa
authors.forename: Joaquín P
authors.initials: JP
authors.lastname: Fernández Larios
authors.forename: Juan Carlos
authors.initials: JC
authors.lastname: Rojas Ruiz
authors.forename: José Roberto
authors.initials: JR
authors.lastname: Silvestre Tomassoni
authors.forename: Carlos Arturo
authors.initials: CA
authors.lastname: Villanueva Díaz
authors.forename: José
authors.initials: J
authors.lastname: Arias Hernández
authors.forename: Mirna Guadalupe
authors.initials: MG
authors.lastname: Echevarría Sánchez
mesh_terms: D000328:Adult; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood; D006801:Humans; D007248:Infertility, Male / Q000097:blood*; D008297:Male; D011247:Pregnancy; D018873:Pregnancy Rate; D011388:Prolactin / Q000097:blood; D012661:Semen / Q000166:cytology*; D013739:Testosterone / Q000097:blood
chemical_list: D013739:Testosterone; D011388:Prolactin; D005640:Follicle Stimulating Hormone