Pearl obstetrics | gynaecology

IVF success rates

IVF success rates

IVF success rates

Variation in IVF success

There are major differences in successful outcomes between clinics’ results per cycle of IVF. Most clinicians accept that it’s difficult to use league tables to judge IVF success rates due to differences with patients between clinics; hence, league tables aren’t published in Australia. Despite these difficulties in judging clinics, there are major differences between clinics, but it’s up to patients to work out where is best for their treatment.

In Australia, the whole country’s results on average are published here. As noted above, there are no league tables. Individual clinics can, and do, extract their own data and compare it to see their overall position. There are many tables in the linked publication, and by searching you can gain an impression of the range of clinics’ average success rates (although not the clinics’ names!)


Dr Mark Sillender

Dr Mark Sillender practices advanced fertility medicine at the PIVET medical centre in Perth. PIVET is a long-established, pioneering, respected fertility practice founded & led by Dr. John Yovich. We have a reputation for taking on the most difficult clinical cases, with poor prognosis.


Dr. Mark Sillender’s IVF success rates • 2012-13

All these results are per single blastocyst embryo transferred.

All embryos were generated by patients’ own eggs ie. none were donated eggs.


IVF success rates


35 yrs and under: 69% clinical pregnancy rate per embryo

36 – 39 yrs: 48% clinical pregnancy rate per embryo

40 years and over: 29% clinical pregnancy rate per embryo

All ages overall results: 51% clinical pregnancy rate per embryo

ivf success rates attadale fremantle

Patients’ own eggs. Usually only one embryo is transferred at a time.



IVF success rates – a different age breakdown


Under 38 years: 54% clinical pregnancy rate per embryo

38 years and over: 42% clinical pregnancy rate per embryo

All ages overall results: 51% clinical pregnancy rate per embryo



Patients’ own eggs. Usually only one embryo is transferred at a time.


  • These are Dr Sillender’s individual results. Each consultant at PIVET does the transfers on “their” allocated day. Fresh embryo transfers are transferred when they are ready, by the consultant of the day, which means you may not get Dr Sillender for a fresh embryo transfer.
  • Frozen embryo transfers can be timed so that Dr Sillender can do the transfer. Timing is somewhat dependent on how the lining of the womb grows, so occasionally someone else has to do it on a different day.
  • Dr Sillender’s usual day at PIVET is Thursday. He is available for consultation at the PEARL offices at Attadale hospital on other days, but his embryo transfers & consultations at PIVET in Leederville are only done on Thursdays.
  • If you see Dr Sillender at Attadale, preliminary management takes place there, and then care is transferred over to PIVET for advanced management if necessary.
  • These results are per embryo, with a majority being frozen. In the UK & Europe most clinics transfer 2 embryos at a time. In the USA, most clinics transfer 2-3 embryos at a time on average. There are major safety advantages to single embryo transfer, provided high pregnancy rates with single embryos are achieved.
  • PIVET has a reputation for taking poor prognosis women. We do not refuse women who want to try cycles and generate their own eggs provided there is a chance, even if that chance is slim. We have several evidence-proven strategies to enhance quality of the ovarian environment.
  • To discuss fertility management with Dr Sillender, please make an appointment either at PIVET or at the PEARL offices at Attadale Private Hospital. If you know you will need surgery beforehand eg. a hysteroscopy or a laparoscopy, then make the appointment at Attadale first, as this will speed things up greatly. You will need a referral from your GP with both you and your partner’s names on the letter.


Embryo transfer in IVF

Embryo transfer is a critical stage in IVF. Strangely, only 1% of IVF research addresses this most important procedure. Perhaps, because embryo transfer looks deceptively simple, it hasn’t gained the attention it deserves.

Results vary greatly. Delicacy of manipulation is crucial. Just going through the cervix with the transfer catheter leads to contractions in the uterus that prevent implantation. The more gentle this is, the fewer the contractions and the more likely the IVF will be successful. Accurate placement in the best part of the womb which has the most optimal lining is also critical. A technique that avoids touching the top of the womb boosts results; again, contractions occur if you touch the top of the womb during the embryo transfer.


PIVET’s success rates

PIVET’s overall IVF success rates. Go here

Dr. Mark Sillender. Consultant obstetrician & gynaecologist