Hewitt Centre for Reproductive Medicine
Each couple’s chance of pregnancy is different according to their individual circumstances, but you may find it useful to review our most recent success rates.
The information below relates to treatments provided by the Hewitt Centre between August 2010 and July 2011 and also includes transport and satellite cycles from Chester, Crewe and Manchester. Please note that a clinical pregnancy is one where a fetal heart has been detected on scan (and is not simply a positive pregnancy test).
IVF & ICSI
The table below shows our overall success rates following treatment by IVF & ICSI
As part of our ongoing efforts to increase pregnancy rates and reduce multiple pregnancies we continue to offer blastocyst transfer and are pleased to report some extremely high pregnancy rates in patients who have embryos transferred at the blastocyst stage (on day 5) as shown in the table below*.
*Please note that blastocyst transfer may not be appropriate for all patients. Please ask your Consultant about this.
Frozen embryo transfer
We continue to freeze and store embryos for patients and the table below shows the pregnancy rates following frozen embryo transfer (FET).
Intrauterine insemination with partner’s sperm
Over the last twelve months we performed 55 cycles of intrauterine insemination in 39 patients of whom 10 have ongoing pregnancies (18% per cycle; 26% per patient).
Intrauterine insemination with donor sperm
Over the last twelve months we performed 105 cycles of intrauterine insemination in 48 patients of whom 10 have ongoing pregnancies (10% per cycle; 21% per patient).
We have been providing treatment by egg-sharing since April 2008 and in that time 39 patients have shared their eggs. 17 of these patients had a clinical pregnancy (44%) but additionally, 17 out of the 39 patients who received eggs from a sharer also became pregnant (44%).
If you would like to see our data which have been verified by the Human Fertilisation and Embryology Authority then please visit the ‘Choose a Fertility Clinic’ section of HFEA’s website at www.hfea.gov.uk.
Reducing the incidence of multiple pregnancy
Since the beginning of 2009, and in accordance with requirements of the HFEA, we are trying to reduce the number of twin (and triplet) pregnancies by transferring only one embryo in the majority of our younger patients. The table below shows that in younger patients the chance of pregnancy is similar having one or two embryos transferred but there is a high risk of a twin pregnancy if two embryos are transferred.
However, please remember that all those patients who have twin pregnancies following transfer of two embryos, would, obviously, have had a singleton pregnancy if only one embryo had been transferred!
Perhaps a better way of looking at these results is to show the chance of each embryo turning into a baby. This is generally known as the ‘embryo implantation rate’ and this shown in the table below.
The table above clearly shows that if you are younger the chance of one of your embryos implanting is not altered by whether you have one or two embryos transferred.
We would, therefore, strongly advise you to consider having only one embryo transferred if you are younger.