R-056. Re-insemination of oocytes after fertilization failure during IVF treatment leads to pregnancies
نویسندگان
چکیده
منابع مشابه
Comparison between intracytoplasmic sperm injection and in-vitro fertilization (IVF) with high insemination concentration after total fertilization failure in a previous IVF attempt.
The aim of this prospective study was to evaluate whether couples with total fertilization failure in a previous in-vitro fertilization (IVF) attempt should be offered an additional IVF treatment with elevated insemination concentration or should be treated with intracytoplasmic sperm injection (ICSI). In 23 cycles 228 sibling metaphase II (MII) oocytes were randomly divided: 143 and 85 oocytes...
متن کاملI-13: Complete Fertilization Failure after ICSIWhat to Do?
Fertilization in vivo is a complex process consisting of six steps, namely, penetration of the cumulus complex, binding of the sperm to the zona pellucida, fusion of oocyte and sperm, oocyte activation, sperm remodelling, and formation of the pronuclei. Since ICSI bypasses the first three steps any problem related to fertilization failure after ICSI arises from oocyte activation onwards. Accord...
متن کاملThe outcome of twin pregnancies after IVF.
It has been suggested that the high rates of prematurity, low birth weight, perinatal morbidity and mortality in in-vitro fertilization (IVF) infants are due to the increased frequency of multiple gestations in this population. The aim of our study was to test this hypothesis by comparing the outcome of IVF twins with that of twins born after spontaneously conceived pregnancies. The perinatal o...
متن کاملRescue ICSI of unfertilized oocytes after IVF.
BACKGROUND Failed fertilization after IVF occurs in 10-20% of cycles. Conflicting results of rescue fertilization by ICSI have been reported. We therefore compared the success rate in terms of fertilization and pregnancy of cycles in which rescue ICSI was performed with those from a matched control group of primarily ICSI cycles. METHODS Unfertilized oocytes from IVF cycles with total fertili...
متن کاملICSI diagnostic: a way to prevent total fertilization failure after 4 unsuccessful IUI
BACKGROUND The aim of this retrospective study is to investigate the relevance of dividing oocytes and using some for traditional in vitro fertilization (IVF) and others for intracytoplasmic sperm injection (ICSI) as of the first IVF cycle in patients with unexplained infertility who have undergone 4 intrauterine insemination (IUI) cycles which produced no pregnancies. METHODS This retrospect...
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ژورنال
عنوان ژورنال: Human Reproduction
سال: 1999
ISSN: 1460-2350,0268-1161
DOI: 10.1093/humrep/14.suppl_3.304