title: Can intra cytoplasmatic morphologically selected sperm injection (IMSI) technique improve outcome in patients with repeated IVF-ICSI failure? a comparative study.
abstract: OBJECTIVE
  Spermatozoal morphology was reported to effect fertilization, embryo quality and pregnancy results in spontaneous conception and ART. Intracytoplasmic morphologically selected sperm injection (IMSI) is an innovative, not invasive technique, which examines the sperm with no harm at a magnification of 6000 × in order to obtain optimal sperm to perform IVF-ICSI. We evaluated the efficiency of IMSI technique in patients with repeated IVF-ICSI failure of at least three cycles with no viable pregnancy and/or very poor sperm quality.
  
  
  METHODS
  All couples who performed IMSI between the years 2009 to 2012 were enrolled retrospectively to the study. Couples with male infertility who were treated with IMSI were included in the study. All their treatments were evaluated and divided into two subgroups: conventional IVF-ICSI treatment and their subsequent IMSI treatment. Demographic data, clinical parameters and outcome were recorded. The IMSI treatments were compared to previous non-IMSI treatments in terms of fertilization rates, cleavage rates, number of embryos and their quality, number of embryos transferred and pregnancy outcome.
  
  
  RESULTS
  Forty-two couples were reviewed. Basic characteristics of the groups were comparable. Fertilization and cleavage rates of the two groups were comparable. The embryos quality demonstrated a trend toward superior quality (grade 1-2) embryos in the IMSI versus ICSI (60% versus 47%; p = 0.07 and 53% versus 40%; p = 0.07), respectively. Implantation and clinical pregnancy rates were significantly superior in IMSI group (19.2% versus 7.8%; p = 0.042 and 41.3% versus 10.5%; p = 0.02, respectively). Miscarriage rate was significantly higher in conventional IVF-ICSI group (100% versus 15.8%; p = 0.04), and live birth rate was significantly higher in IMSI group (0 in conventional IVF-ICSI and 34.7% per transfer in IMSI group; p = 0.003).
  
  
  CONCLUSIONS
  IVF outcome of IMSI resulted in a higher implantation rate, pregnancy rate and most importantly delivery rate compare to non IMSI treated cycles.
authors.affiliation: IVF Unit, Department of Obstetrics and Gynecology, Faculty of Medicine, Hillel Yaffe Medical Center, Technion - Israel Institute of Technology , Hadera , Israel.
authors.forename: Einat
authors.initials: E
authors.lastname: Shalom-Paz
authors.forename: Saja
authors.initials: S
authors.lastname: Anabusi
authors.forename: Medeia
authors.initials: M
authors.lastname: Michaeli
authors.forename: Etti
authors.initials: E
authors.lastname: Karchovsky-Shoshan
authors.forename: Nechami
authors.initials: N
authors.lastname: Rothfarb
authors.forename: Tal
authors.initials: T
authors.lastname: Shavit
authors.forename: Adrian
authors.initials: A
authors.lastname: Ellenbogen
mesh_terms: D000328:Adult; D048430:Cell Shape; D005260:Female; D006801:Humans; D007248:Infertility, Male / Q000628:therapy*; D008297:Male; D011247:Pregnancy; D011256:Pregnancy Outcome; D018873:Pregnancy Rate; D019233:Retreatment; D020554:Sperm Injections, Intracytoplasmic / Q000379:methods*; D013094:Spermatozoa / Q000166:cytology*
keywords: Delivery rate; ICSI failure; IMSI; pregnancy rate; sperm selection