title: [Influence of sperm from different sources on the clinical outcome of intracytoplasmic sperm injection].
abstract: OBJECTIVE
  To analyze the clinical outcomes of intracytoplasmic sperm injection (ICSI) with spermatozoa from different sources.
  
  
  METHODS
  We retrospectively studied the rates of fertilization, clinical pregnancy, implantation, abortion, ectopic pregnancy and delivery in 682 patients treated by ICSI, who were divided according to the sperm sources into an ejaculated sperm group (ES, n = 598), a percutaneous epididymal sperm aspiration (PESA, n = 58) and a testicular sperm extraction (TSE, n = 26).
  
  
  RESULTS
  The fertilization rate was significantly lower in the TSE than in the ES and PESA groups (81.06% vs 87.95% and 87.82%, P < 0.05). But no statistically significant differences were observed among the ES, PESA and TSE groups in the rates of clinical pregnancy (39.46%, 48.28% and 34.62%), implantation (19.80%, 23.80% and 18.34%), abortion (13.13%, 17.86% and 11.11%), ectopic pregnancy (5.51%, 7.14% and 11.11%) and delivery (32.11%, 36.21% and 26.92%) (P > 0.05).
  
  
  CONCLUSIONS
  Although TSE-obtained sperm affect the rate of fertilization, those obtained by TSE and PESA do not obviously influence the outcome of clinical pregnancy.
authors: Center of Assisted Reproductive Techniques, Shenzhen Zhongshan Urology Hospital, Shenzhen, Guangdong 518001, China. songcheng128@163.com
authors: Cheng
authors: C
authors: Song
authors: Yong
authors: Y
authors: Zeng
authors: Xiao-dong
authors: XD
authors: Hu
authors: Jin-quan
authors: JQ
authors: Cheng
authors: Ju
authors: J
authors: Huang
authors: Li-shi
authors: LS
authors: Huang
authors: Wei
authors: W
authors: Zhang
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D011256:Pregnancy Outcome; D012189:Retrospective Studies; D020554:Sperm Injections, Intracytoplasmic / Q000379:methods*; D053625:Sperm Retrieval; D013094:Spermatozoa