Success Rates Explained

•This rate refers to the number of pregnancies among all women who start an IVF treatment cycle, even if they don’t proceed to Egg Collection.

• Women commencing IVF stimulation may have their cycle cancelled at this time for the following reasons:

• They may not have produced any or enough eggs for collection after receiving stimulation
• Or, they may have experienced an adverse reaction to the treatment at which point it would be deemed unsafe for them to continue

• If 10 women commenced a treatment cycle but only 9 have continued to egg collection and embryo transfer, and 5 of those patients had a pregnancy, a clinic would show a 50% success rate Per Treatment Cycle.

• This refers to the number of pregnancies among all women who had their eggs retrieved for fertilisation, even if they don’t proceed to Embryo Transfer.

• Those who commence egg collection may have their cycle cancelled at this time for any of the following reasons:

• A woman may have produced too many eggs (hyperstimulation) after taking drugs and it would be deemed unsafe for her to continue the cycle
• The fertilised embryos did not develop normally
• The fertilised embryos test positive during a genetic test
• Or, perhaps no embryos developed

• If 10 women continued their cycle, but only 9 had a successful egg collection and embryo transfer and 5 of those patients had a pregnancy , a clinic would show a 55% success rate Per Egg Collection

• This refers to the number of pregnancies among all women who have had fertilised embryos placed back into their uterus, even if they do not become pregnant.

• Successful implantation requires a competent blastocyst embryo interacting with a receptive endometrial (uterine) lining to establish a pregnancy, although as in naturally conceived pregnancies, IVF pregnancies may end in miscarriage or loss.

• If 9 women had an egg collection but only 7 of those reached an embryo transfer and 5 had successful pregnancies, a clinic would show a 71% success rate per Embryo Transfer