Pregnancy loss in pregnancies conceived after in vitro oocyte maturation, conventional in vitro fertilization, and intracytoplasmic sperm injection - PubMed (original) (raw)
Comparative Study
Pregnancy loss in pregnancies conceived after in vitro oocyte maturation, conventional in vitro fertilization, and intracytoplasmic sperm injection
William M Buckett et al. Fertil Steril. 2008 Sep.
Free article
Abstract
Objective: To compare rates of pregnancy loss after oocyte maturation in vitro (IVM), after IVF, and after intracytoplasmic sperm injection (ICSI).
Design: Retrospective comparative study.
Setting: University tertiary-care center for infertility.
Patient(s): Women undergoing assisted reproductive technology in a single center.
Intervention(s): Oocyte maturation in vitro, IVF, or ICSI, as indicated.
Main outcome measure(s): Biochemical pregnancy, clinical miscarriage, ectopic pregnancy, and late fetal loss.
Result(s): There were 1,581 positive pregnancy tests (120 IVM, 849 IVF, and 612 ICSI). The biochemical pregnancy loss rate did not statistically significantly differ among the groups: 17.5% (21/120) after IVM, 17.0% (144/849) after IVF, and 18.0% (110/612) after ICSI. The clinical miscarriage rate after IVM was 25.3% (25/99), which was statistically significantly different compared with 15.7% (111/705) after IVF and 12.6% (63/502) after ICSI. However, the clinical miscarriage rates in women with polycystic ovary syndrome were statistically similar, at 24.5% (24/98) after IVM and 22.2% (18/81) after IVF. The ectopic pregnancy rates also were statistically similar: 1.0% (1/99) after IVM, 2.3% (16/705) after IVF, and 1.8% (9/502) after ICSI. The late fetal loss rates were similar as well: 1.0% (1/99) after IVM, 2.7% (19/705) after IVF, and 2.9% (14/502) after ICSI. There were no chromosomal abnormalities in the IVM group.
Conclusion(s): There is a higher rate of clinical miscarriage after IVM when compared with IVF and ICSI. This appears to be related to polycystic ovary syndrome rather than to the IVM procedure.
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