title: [Relationship of sperm morphology with the outcomes of in vitro fertilization and embryo transfer].
abstract: OBJECTIVE
  To study the application value of normal sperm morphology on the outcomes of classic in vitro fertilization and embryo transfer (IVF-ET).
  
  
  METHODS
  This study included 659 infertile couples admitted to our center for IVF-ET. Based on the percentage of morphologically normal sperm (MNS), we divided the patients into groups A (n = 112, MNS < 2%), B (n = 180, MNS > or = 2 - < 4%), C (n = 74, MNS > or = 4 - < 5%), and D (n = 293, MNS > or = 5%), and compared the rates of fertilization, normal fertilization, embryos obtained, biochemical pregnancy, clinical pregnancy, implantation, and live birth among different groups.
  
  
  RESULTS
  The mean fertilization rate was significantly higher in groups C (71.90%) and D (72.89%) than in A (57.97%) and B (63.29%) (P < 0.05), with no remarkable differences either between A and B (P > 0.05) or between C and D (P > 0.05). The normal fertilization rate was also significantly higher in group D (57.16%) than in A (46.52%) and B (50.89%) (both P < 0.05) as well as in C (54.67%) than in A (P < 0.05). The rate of embryos obtained, too, was markedly higher in group D (55.62%) than in B (45.75%) (P < 0.05), but none with remarkable difference from other groups (all P > 0.05). There were no statistically significant differences among the four groups in the rates of biochemical pregnancy, clinical pregnancy, implantation, abortion, and live birth (all P > 0.05).
  
  
  CONCLUSIONS
  The rate of MNS had some influence on IVF-ET, and 5% MNS exhibited a higher value than 4% MNS in predicting the outcomes of IVF.
authors.forename: Yi-Chao
authors.initials: YC
authors.lastname: Shi
authors.forename: Li-Yan
authors.initials: LY
authors.lastname: Shen
authors.forename: Hong-Bo
authors.initials: HB
authors.lastname: Cheng
authors.forename: Jia-Xiong
authors.initials: JX
authors.lastname: Wang
authors.forename: Dan
authors.initials: D
authors.lastname: Song
authors.forename: Gai-Gai
authors.initials: GG
authors.lastname: Wang
authors.forename: Shen-Min
authors.initials: SM
authors.lastname: Yang
authors.forename: Ai-Yan
authors.initials: AY
authors.lastname: Zheng
authors.forename: Jie
authors.initials: J
authors.lastname: Ding
authors.forename: Bin
authors.initials: B
authors.lastname: Gu
authors.forename: Yong-Le
authors.initials: YL
authors.lastname: Xu
authors.forename: Qing-Xia
authors.initials: QX
authors.lastname: Meng
authors.forename: Qin-Yan
authors.initials: QY
authors.lastname: Zou
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Hong
authors.initials: H
authors.lastname: Li
mesh_terms: D000328:Adult; D010064:Embryo Implantation; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D008297:Male; D011247:Pregnancy; D011256:Pregnancy Outcome; D012189:Retrospective Studies; D013094:Spermatozoa / Q000166:cytology*