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Original Research
ICSI cycle outcomes in oligozoospermia
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1
Department of Gynecology and Obstetrics, Zonguldak Karaelmas University, Faculty of Medicine, Zonguldak
2
Department of Gyneacology and Obstetrics, Ergani State Hospital, Diyarbakir
3
Department of Obstetrics and Gynecology, Hacettepe University, Faculty of Medicine, Ankara
4
Department of Histology & Embryology, Hacettepe University, Faculty of Medicine, Ankara (Turkey)
Clin. Exp. Obstet. Gynecol. 2012, 39(3), 280–282;
Published: 10 September 2012
Abstract
Aim: The aim of this study was to evaluate the sole effect of sperm concentration on fertilization, embryo quality and pregnancy rates in patients undergoing ICSI cycles. Materials and Methods: 560 ICSI cycles performed for male factor infertility were divided into four groups according to sperm concentration retrospectively. Group 1 consisted of 86 couples whose sperm concentration was less than 1 x 106, group 2 consisted of 169 couples whose sperm concentration ranged between 1 x 106 and 5 x 106, group 3 consisted of 95 couples whose sperm concentration ranged between 5 x 106 and 10 x 106 and group 4 consisted of 210 couples whose sperm concentration ranged between 10 x 106 and 20 x 106. Results: Fertilization rate was significantly lower in the first three groups compared to the last group (p < 0.05). The first three groups were comparable with each other. There were no differences according to ovarian response to stimulation, embryo quality and clinical pregnancy rates between the four groups. Conclusion: Lower sperm concentration has detrimental effects on the outcomes of ICSI cycles. This situation is more evident in men with severe and extremely severe oligozoospermia.
Keywords
ICSI
Oligozoospermia
Fertilization rate