TY - JOUR
T1 - Morphology and clinical outcomes of embryos after in vitro fertilization are superior to those after intracytoplasmic sperm injection
AU - Bar-Hava, Itai
AU - Brengauz, Masha
AU - Ashkenazi, Jacob
AU - Feldberg, Dov
AU - Shelef, Michal
AU - Orvieto, Raoul
AU - Schwartz, Ariela
AU - Ben-Rafael, Zion
PY - 1997/10
Y1 - 1997/10
N2 - Objective: To compare embryos obtained after IVF and intracytoplasmic sperm injection (ICSI) regarding morphology and the likelihood of achieving clinical pregnancy. Design: Case-control study. Setting: An IVF unit controlling 1,310 cycles in 1996. Patient(s): Women having a total of 477 IVF and 475 ICSI consecutive cycles. Intervention(s): Ovarian stimulation, IVF- ET, or ICSI-ET for all couples. Main Outcome Measure(s): Number of grade-A embryos transferred, preclinical pregnancy losses, and clinical pregnancy rates in IVF and ICSI cycles. Result(s): In comparison with the ICSI group, the IVF group showed significantly more grade-A embryos available for transfer (mean, 2 ± 1.6 versus 1.8 ± 1.5), significantly fewer preclinical pregnancy losses (1.6% versus 4%), and significantly higher clinical pregnancy rates (25% versus 19.1%). Conclusion(s): Embryos obtained after IVF are superior to those obtained after ICSI in relation to embryo morphology and the likelihood of achieving clinical pregnancy.
AB - Objective: To compare embryos obtained after IVF and intracytoplasmic sperm injection (ICSI) regarding morphology and the likelihood of achieving clinical pregnancy. Design: Case-control study. Setting: An IVF unit controlling 1,310 cycles in 1996. Patient(s): Women having a total of 477 IVF and 475 ICSI consecutive cycles. Intervention(s): Ovarian stimulation, IVF- ET, or ICSI-ET for all couples. Main Outcome Measure(s): Number of grade-A embryos transferred, preclinical pregnancy losses, and clinical pregnancy rates in IVF and ICSI cycles. Result(s): In comparison with the ICSI group, the IVF group showed significantly more grade-A embryos available for transfer (mean, 2 ± 1.6 versus 1.8 ± 1.5), significantly fewer preclinical pregnancy losses (1.6% versus 4%), and significantly higher clinical pregnancy rates (25% versus 19.1%). Conclusion(s): Embryos obtained after IVF are superior to those obtained after ICSI in relation to embryo morphology and the likelihood of achieving clinical pregnancy.
KW - Embryo morphology
KW - ICSI
KW - IVF
KW - Pregnancy
UR - http://www.scopus.com/inward/record.url?scp=0343489568&partnerID=8YFLogxK
U2 - 10.1016/S0015-0282(97)00265-3
DO - 10.1016/S0015-0282(97)00265-3
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AN - SCOPUS:0343489568
SN - 0015-0282
VL - 68
SP - 653
EP - 657
JO - Fertility and Sterility
JF - Fertility and Sterility
IS - 4
ER -
