BEYOND IN VITRO FERTILIZATION - NEW TECHNIQUES OFFER RENEWED HOPE TO THE INFERTILE COUPLE
Released on = April 1, 2007, 10:17 am
Press Release Author = Vermesh.Com
Industry = Healthcare
Press Release Summary = Infertility practice specializing in IVF, donor eggs,male factor infertility, and other advanced fertility treatments.
Press Release Body = Eliran Mor, MD
Michael Vermesh, MD
The Center for Fertility and Gynecology
Tarzana, CA
The roller coaster ride of fertility treatment is emotionally and physically exhausting. Couples typically begin treatment with simple and relatively inexpensive interventions such as ovulation induction and intrauterine insemination (IUI), and when treatment has failed, progress to injectable medications and finally in vitro fertilization (IVF). Each treatment protocol may last up to one month and several cycles of the same method are often repeated to maximize chances for success.
The IVF process, while expensive and physically demanding, has been associated with the highest success rates of all treatment modalities. However, many couples remain childless after one or more attempts. Couples who have failed IVF multiple times are often depressed, angry, disappointed, discouraged, and in general emotionally, physically, and financially drained. If IVF, the procedure with the highest success rate for achieving pregnancy, has failed, what other hope is there?
When standard IVF has failed multiple times, some infertility specialists offer couples a procedure in which gametes (eggs and sperm) or zygotes (day-one embryos) are transferred into the fallopian tubes: gamete intra-fallopian transfer (GIFT), or zygote intra-fallopian transfer (ZIFT). In GIFT and ZIFT, all steps from downregulation to ovarian stimulation to egg retrieval, are identical to standard IVF. However, several important differences exist. In a GIFT procedure, retrieved eggs and sperm are mixed together and transferred into one or both fallopian tubes (where natural fertilization normally occurs). In a ZIFT procedure, on the other hand, fertilization is allowed to take place in the laboratory just like in standard IVF, however when day-one embryos are formed, they are transferred into the fallopian tube(s).
Success rates, although reported to be higher than standard IVF when prior IVF cycles have failed, are only modestly higher and are individualized to different IVF clinics. In our program, for example, we found that with prior failed IVF cycles, a GIFT or ZIFT procedure achieved similar pregnancy success rates to standard IVF.
So what is next? Recently, yet another technique had been described offering the infertile couple who had exhausted all other standard treatment modalities (IVF, GIFT, ZIFT) true hope: combination GIFT/IVF or ZIFT/IVF. In these procedures, all known technologies are combined to maximize success rates. After transfer of gametes or day-one embryos into the fallopian tube(s) via laparoscopic surgery (a GIFT or ZIFT procedure), remaining embryos that had been left to develop in the laboratory are transferred into the uterus through the cervix two or three days later, when the embryo is three days old.
In a recent review of over 100 of our own cycles of combined GIFT/IVF and ZIFT/IVF procedures, couples that had failed on the average at least 2 prior IVF cycles had a clinical pregnancy rate of 60% across all age groups, the oldest patient conceiving at age 44 (data soon to be published). Twin and triplet pregnancy rates were found to be identical to standard IVF, reassuring that transfer of more gametes or embryos in the combined procedure did not result in any significant increase in the multiple gestation rates, compared to IVF.
Inability to conceive can be a devastating phenomenon to a couple. Often times, the road of fertility treatment may be torturous and full of disappointment. Thanks to medical advances in the field of Reproductive Endocrinology and Infertility, couples that had met previous failure can now be offered new procedures that may significantly enhance success rates and offer renewed hope.
FREQUENTLY ASKED QUESTIONS?
Am I a candidate for GIFT/IVF or ZIFT/IVF despite being a poor responder?
The usual number of eggs/embryos used for transfer to the fallopian tubes is 3, while the number of embryos transferred trans-cervically is typically 2. Therefore, a GIFT/IVF or ZIFT/IVF cycle would require that at least 5 eggs/embryos are available for transfer. If you had previously responded poorly to a stimulation protocol (< 5 eggs), it is possible to freeze embryos in 1 or 2 consecutive cycles until enough embryos are accumulated in order to complete a GIFT/IVF or ZIFT/IVF cycle.
How does a history of poor quality embryos affect success with GIFT/IVF or ZIFT/IVF?
Embryo quality may be determined by many factors such as the stimulation protocol, egg quality, and sperm quality. Some embryos may further be over-sensitive to laboratory conditions, which can contribute to poor development. Placement of such embryos in their natural environment, the fallopian tube (as is done with GIFT/IVF and ZIFT/IVF) at the critical early stages of development may enhance their ability to survive and ultimately implant in the uterus. In fact, a history of poor embryo quality may be an indication for GIFT/IVF or ZIFT/IVF.
Will I have enough time to recover from surgery prior to undergoing trans-cervical embryo transfer?
A standard GIFT or ZIFT procedure at our Center lasts an average of 15 minutes. This means the recovery time from surgery and anesthesia is very rapid and will not affect your trans-cervical embryo transfer 2 or 3 days later. Most patients resume normal daily activities within 12-24 hours of laparoscopy.
What are the basic requirements prior to GIFT/IVF or ZIFT/IVF?
Several limitations exist with either a GIFT or ZIFT procedure. First, tubal embryo transfer is not suitable for patients with tubal factor infertility, as at least one normal tube has to be present. An x-ray test called a hysterosalpingogram (HSG) would be required before surgery to confirm tubal patency. Second, not all fertility programs can offer this procedure since it requires surgical intervention at the time of, or one day following, the egg retrieval procedure. This requires that a laboratory equipped to handle gametes and embryos be in close proximity to an operating room.
Eliran Mor, MD and Michael Vermesh, MD can be reached at 818-881-9800 or www.vermesh.com
Web Site = http://www.vermesh.com
Contact Details = The Center for Fertility and Gynecology 18370 Burbank Blvd Suite 301 Tarzana, CA 91356 Phone: (818) 881-9800 Fax: (818) 881-1857
Contact Name - Rajesh Gavali Email - rlg_in1@yahoo.com