Mistakes and near misses in fertility treatment are recorded by the Human Fertilisation and Embryology Authority but until now details of the most serious cases have been kept secret. Eight of these mistakes were given grade A status, meaning they were the most serious incidents could involve events such as embryo mix ups, the death of a patient or an incident which affects a number of patients, for example, when a storage unit malfunctions and all embryos are defrosted and lost. In 2007/8 two of the eight grade A incidents involved mix-ups. A spokesman refused to give details but said they could be cases where the wrong sperm was used to fertilise and embryo or the wrong embryo was defrosted for use, but neither involved the implantation of wrong embryos. Last year there were 182 incidents out fo 52,000 cycles of treatment provided in Britain, the HFEA said.
A serious blunder at one of Britain's top fertility clinics dramatically increased the risk its patients would suffer a miscarriage or give birth to a child with serious health problems, sparking fresh fears about how IVF centres are run in the wake of a series of scandals. Unscreened sperm used by staff at the London Women's Clinic (LWC) to create dozens of embryos was later found to have a chromosome abnormality that could have been passed on to any unborn child, The Independent on Sunday has learnt. The British Fertility Society's screening guidelines make it clear that the clinic should never have accepted the donor. At least one couple suffered a miscarriage as a direct result.