title: Comparison between intracytoplasmic sperm injection and intracytoplasmic morphologically selected sperm injection in oligo-astheno-teratozoospermia patients.
abstract: OBJECTIVE
  The aim of this study was to evaluate the efficiency of the intracytoplasmic morphologically selected sperm injection (IMSI) technique compared with conventional ICSI and previous ICSI attempts in oligo-astheno-teratozoospermia (OAT) patients.
  
  
  METHODS
  The sperms were selected under high magnification (6,600×) and used to induce fertilization in previous ICSI patients by IMSI. These results were compared with previous conventional ICSI cycles in patients with OAT infertility.
  
  
  RESULTS
  These results demonstrated no significant difference in the fertilization rate between IMSI and previous ICSI cycles (67.7% vs. 65.0%). However, the pregnancy and implantation rates with IMSI were significantly higher than those of the ICSI cycles (33.3% vs. 12.5% and 14.6% vs. 5.4%, respectively; p<0.05). The miscarriage rate among pregnant patients (18.2% vs. 37.5%) showed no statistically significant difference between groups.
  
  
  CONCLUSIONS
  Compared to conventional ICSI, this study found that IMSI increased the IVF-ET success rates in patients with OAT.
authors.affiliation: Maria Fertility Hospital, Seoul, Korea.
authors.forename: Hyung Jun
authors.initials: HJ
authors.lastname: Kim
authors.affiliation: Maria Fertility Hospital, Seoul, Korea.
authors.forename: Hye Jin
authors.initials: HJ
authors.lastname: Yoon
authors.affiliation: Maria Fertility Hospital, Seoul, Korea.
authors.forename: Jung Mi
authors.initials: JM
authors.lastname: Jang
authors.affiliation: Maria Fertility Hospital, Seoul, Korea.
authors.forename: Hwa Soon
authors.initials: HS
authors.lastname: Oh
authors.affiliation: Maria Fertility Hospital, Seoul, Korea.
authors.forename: Yong Jun
authors.initials: YJ
authors.lastname: Lee
authors.affiliation: Maria Fertility Hospital, Seoul, Korea.
authors.forename: Won Don
authors.initials: WD
authors.lastname: Lee
authors.affiliation: Fertility Research Center, Maria Medical Foundation, Seoul, Korea.
authors.forename: San Hyun
authors.initials: SH
authors.lastname: Yoon
authors.affiliation: Fertility Research Center, Maria Medical Foundation, Seoul, Korea.
authors.forename: Jin Ho
authors.initials: JH
authors.lastname: Lim
keywords: High magnification; Intracytoplasmic morphologically selected sperm injection; Intracytoplasmic sperm injection; Oligo-astheno-teratozoospermia