A randomized study of intracytoplasmic sperm injection (ICSI) versus subzonal insemination (SUZI) for the management of severe male-factor infertility.
OBJECTIVE
Our objective was to compare the fertilization rates achieved by ICSI versus SUZI in couples with severe male infertility.


METHODS
This was a randomized, prospective study.


METHODS
The study took place at the In-Vitro Fertilization-Embryo Transfer Unit, Department of Obstetrics and Gynecology, The Chaim Sheba Medical Center.


METHODS
Oocytes of 12 patients were randomly allocated to either ICSI or SUZI procedures. Each woman thus served as her own control. All 12 patients had undergone at least two previous in vitro fertilization cycles with no fertilization or had a very low sperm count, i.e., a total motile sperm count of less than 0.5 x 10(6).


RESULTS
A total of 117 oocytes was obtained for fertilization. Of these oocytes, 16% (10/63) were successfully fertilized by SUZI, compared to 33% (18/54) treated by ICSI. This difference was statistically significant (P < 0.05). Of the 12 cycles, ICSI provided embryos in 10 cycles (83%), while SUZI was successful in only 6 cycles (50%). Four pregnancies were achieved: 33% per attempt, or 40% per transfer.
Department of Obstetrics and Gynecology, Chaim Sheba Medical Center, Tel Hashomer, Israel.
D
D
Levran
D
D
Bider
M
M
Yonesh
Z
Z
Yemini
D S
DS
Seidman
S
S
Mashiach
J
J
Dor
D000328:Adult; D005260:Female; D005307:Fertilization in Vitro / Q000379:methods / Q000592:standards; D006801:Humans; D007248:Infertility, Male; D007315:Insemination, Artificial / Q000379:methods* / Q000592:standards; D008297:Male; D009865:Oocytes / Q000502:physiology; D011247:Pregnancy; D018873:Pregnancy Rate; D011446:Prospective Studies; D013084:Sperm-Ovum Interactions / Q000502:physiology; D013094:Spermatozoa / Q000502:physiology