In order to evaluate the assisted fertilizations in France, BLEFCO ass
ociation has analysed 436 and 1 781 attempts for SUZI and ICSI respect
ively For SUZI, the transfer rate was 62 % and the pregnancy per attem
pt rate was 10 %. For ICSI, whatever indications, the transfer rate wa
s 86 % and the pregnancy per attempt rate was 21 %. ICSI in cases of a
ltered sperm without previous IVF represented 46 % of ICSI attempts. N
o relationship between the transfer rate and the indication of ICSI ha
s been observed. However in case of unexplained fertilization failures
, the pregnancy per attempt rate is significantly lower when compared
to the other indications.