Ask Our Doctors – Archive
Our Medical Directors are outstanding physicians that you will find to be very personable and compassionate, who take care to ensure that you have the most cutting-edge fertility treatments at your disposal. This is your outlet to ask your questions to the doctors.
We are going to be doing 3 cycles of egg retrievals in Mexico and the clinic suggsted that we freeze eggs vs. embryos to cut down on cost. What are your thoughts? Should we pay the extra to freeze embryos or will we get the same results? We are not going to PGS test embryos until after all three retrievals, so is it dangerous to have the 1st and 2nd batches frozen and thawed for testing then frozen again while waiting for results only to be thawed again for use?
Respectfully Berma,
There is absolutely no doubt that advanced embryo (blastocyst) cryopreservation by vitrification is far superior to egg freezing.
Good luck!
Geoff Sher
702-281-7437
Dear doctor,
In case of moderate to severe male infertility issues (low sperm count 5%)and women with pcos (age under 30)but produce eggs with gonadotrophins, what can be the best approach to achieve healthy pregnancy.
For reason of the male factor alone, IVF with ICSI is needed.
Male infertility is reported as a factor in 30-50% of infertility cases. In fact, many fertility specialists will recommend a semen analysis as one of the very first tests that should be done. It is relatively simple, inexpensive and yields much information.
The two main causes of male factor infertility can be divided into either problems in manufacturing sperm or problems in getting sperm outside of the body (ejaculation of viable sperm). Sperm manufacturing problems can arise from problems in the testicle itself or from signaling problems from the brain to the testicle. Problems in ejaculation of sperm can arise from obstructions such as previous vasectomies to spinal cord injuries resulting in damage of nerves that innervate the testicle and male reproductive tract.
The initial work up for sperm problems should include a comprehensive semen analysis which will evaluate the semen against fertility standards. These include the volume of the ejaculate (2-6mL), concentration of sperm (>20M/mL), motility (>50%) and morphology (Strict >14%). The semen analysis will frequently drive the remainder of the male evaluation if warranted. For example, in severe male factor cases, where concentration is extremely low, a hormonal and genetic evaluation of the male partner including an FSH, LH, total testosterone level, TSH and prolactin might be indicated. These tests will assist in determining if the problem lies in the proper signaling of the testicle from the brain in order to manufacture sperm.
A further evaluation including a blood karyotype will further assist in determining if there is a genetic abnormality in the male causing lack of sperm manufacturing. Once these things are ruled out, then issues of obstruction must be considered. This will usually involve a urologist who specializes in male infertility. After a thorough history and physical exam of the male partner, a urologist might perform an ultrasound of the testicle, a dye test (vasogram) of the male reproductive tract, and possibly a biopsy of the testicle. There are all rather minor procedures that require very little down time.
Treatment of male factor infertility can range from intrauterine inseminations to in vitro fertilization (IVF) with intracytoplasmic sperm injection (ICSI). In severe cases, it might be necessary to biopsy the testicle, a procedure called “testicular sperm extraction” (TESE). The biopsied sperm cells can then be used to inject into the eggs for hopeful fertilization. This procedure can diagnose as well as treat severe male factor cases.
Some cases of male factor infertility are beyond using the male partner’s sperm, and in these cases, there is still hope by using donor sperm. The use of donor sperm is safe and effective.
I strongly recommend that you visit http://www.DrGeoffreySherIVF.com. Then go to my Blog and access the “search bar”. Type in the titles of any/all of the articles listed below, one by one. “Click” and you will immediately be taken to those you select. Please also take the time to post any questions or comments with the full expectation that I will (as always) respond promptly.
•Controlled Ovarian Stimulation (COS) for IVF: Selecting the ideal protocol
•IVF: Factors Affecting Egg/Embryo “competency” during Controlled Ovarian Stimulation(COS)
•The Fundamental Requirements For Achieving Optimal IVF Success
•Routine Fertilization by Intracytoplasmic Sperm Injection (ICSI): An Argument in FavorHormonal Treatment of Male Infertility
•Hormonal Treatment of Male Infertility
•Antisperm Antibodies, Infertility and the Role of IVF with Intracytoplasmic Sperm Injection (ICSI)
•Testicular Sperm Extraction (TESE) and Testicular Sperm Aspiration (TESA): Surgical Approaches for Accessing Sperm from men who have no sperm in their ejaculates (Azoospermia)
•Varicocele and Male Infertility: When and how should it be treated.
•The Sperm Chromatin Structure Assay (SCSA): A Measure of the Potential of Sperm to Help Propagate a Viable Pregnancy
•Understanding Polycystic Ovarian Syndrome (PCOS) and the Need to Customize Ovarian Stimulation Protocols.
•“Triggering” Egg Maturation in IVF: Comparing urine-derived hCG, Recombinant DNA-hCG and GnRH-agonist:
•The “Lupron Trigger” to Prevent Severe OHSS: What are the Pro’s and Con’s?
•Intrauterine Insemination (IUI): Who Needs it & who Does Not: Pro’s & Con’s!
•Micro-IVF: Often Preferable to Ovarian Stimulation with or Without IUI
•The Role of Gender Selection in IVF.
Please call or email Julie Dahan, my patient concierge. She will guide you on how to set up an in-person or Skype consultation with me. You can reach Julie at on her cell phone or via email at any time:
Julie Dahan
•Email: Julied@sherivf.com
•Phone: 702-533-2691
?800-780-7437
Geoff Sher
I also suggest that you access the 4th edition of my book ,”In Vitro Fertilization, the ART of Making Babies”. It is available as a down-load through http://www.Amazon.com or from most bookstores and public libraries.
Dear Dr. Sher,
I will really appreciate of you could answer my three questions regarding embryo transfer. I am 41 years old and my husband is 39 years old. I had four IVFs.
Previous cycles:
First IVF: Two 5-day embryo transferred- twin pregnancy and then miscarried at 7 weeks. Chromosomal testing female normal embryo.
Second IVF: 3 days embryo transfer- negative
Pooling cycles: (frozen embryoes)
Third IVF: one 7-cell 3-day embryo frozen. Uneven growth of cells.
Fourth IVF : Three 3-day embryo frozen, one has 4 cells (divided evenly), Two are 6 cells (one of 6 cell embryoes dividing evenly)
Since my lining is not responding well to estradiol tablets I will be doing natural cycle. Lining is better in natural cycle. Earlier, I had endometrial receptivity assay done for natural cycle.
My questions:
1)Embryoes from my fourth cycle were slow growing. On third day morning all three embryoes were just 4 cells. In afternoon two made to six cells and were frozen.What causes slow growth of embryo? Can they still implant and make healthy baby?
2)My doctor is recommending to thaw all four embryoes, grow them for two days and then transfer them. If I do what doctor says, then how can growth of all four embryoes can be synchronized if they have different number of cells?
3)How would you recommend transferring them? Day 3 or grow and transfer at day 5.
I would be highly grateful to you if you could please answer my questions. Thank you.
Macy
Hi Dr. Sher,
I’m 35 years old and my husband is 31. I have one ovary due to a cyst in 1997. I took birth control pills from 1998-2013. I conceived my 2 year old son naturally in my first month off the pill and had no issues in pregnancy with him other than a c section after being induced because I was not dilating. We are now doing IVF for our 2nd baby. My AMH is low (.7) My husband has no issues. Even with the low AMH I retrieved 8 eggs, 7 fertilized, 5 made it to 5 day blast and went for PGD testing. Out of the five there were three normal embryos. My lining never got thicker than 5.5mm in the retrieval cycle so my doctor did a hysteroscopy to see if there was any scar tissue from my previous surgeries. There were a few small adhesions that he smoothed but nothing else. I started a frozen transfer cycle and I took 2mg oral Estrace 2x a day for one week, then 2mg vaginally Estrace 3x a day for 1.5 weeks then added the patches for another week. My estrogen level was very high but lining isn’t thickening. That transfer was cancelled. I tried a natural cycle and never got past 4.5 so it was just cancelled again. My doctor wants me to try vitamin e and trental but seems to be pretty negative right now about it thickening. I asked about viagara but he says it doesn’t work. I’m so frustrated.
I’m so upset because he seems so negative- like there is nothing else he can do. I’m so confused because I got pregnant with my son so quickly and easily. Could my lining have changed that much in 3 years? Is there anything else you would recommend or do differently? Also, could this just be how my lining is? Could it have been that way with my son? Have you seen success with thin linings? My doctor will not transfer under 6mm. Thank you!
The considerable emotional, physical and financial burden associated with infertility treatment in general and with IVF in specific, demand that factors known to affect outcome be identified and regulated prior to initiating treatment.
Just as a successful garden needs a ”good” seed properly planted in fertile soil to produce healthy plants, successful embryo implantation requires a good seed (genetically “normal” embryo) and fertile soil (receptive uterine lining) to make a healthy baby. I have long used this “Seed/Soil Relationship” analogy to help clarify the critical nature of the interaction between embryo and endometrium in the successful propagation of pregnancy..
There have in the last decade been numerous reports suggesting that certain drugs/supplements (e.g. GCSF) and endometrial receptivity testing/preparation might dramatically improve implantation. As yet, none of these have been proven to be effective. This article addresses the influence of the most relevant and important factors that are known to affect .endometrial receptivity and discusses approaches to treatment:
1. Endometrial thickness
In 1989, I first demonstrated that in both normal and “hormonally stimulated” cycles, preovulatory endometrial thickness as assessed by ultrasound examination, is partially predictive of embryo implantation (pregnancy) potential following IVF. Ideally the endometrium should measure at least 8.0mm in thickness, (but preferably >9mm).
A “poor” endometrial lining is most commonly due to: 1) inflammation of the uterine lining (endometritis) that usually occurs as a result of endometritis (inflammation of the uterine lining that can follow a septic delivery, partial retention of the placenta following delivery, abortion or miscarriage, 2) severe adenomyosis (gross invasion of the uterine muscle by endometrial glandular tissue), 3) multiple fibroid tumors of the uterine wall) 4) prenatal exposure to the synthetic hormone, diethylstilbestrol (DES) and, 5) following >3, consecutive, back to back cycles of clomiphene citrate ovulation induction.
Treatment with vaginal Sildenafil (Viagra): Hitherto, attempts to augment endometrial growth in women with poor endometrial linings by bolstering circulating estrogen blood levels (through the administration of increased doses of fertility drugs, aspirin administration and with supplementary estrogen therapy) have yielded disappointing results.
In the mid-90’s I first reported on the finding that thee vaginal administration of Viagra for several days prior to the “hCG trigger “ or progesterone administration enhances uterine blood flow and estrogen delivery to the uterine lining and so improves endometrial thickening. Then In October 2002, I reported on the administration of vaginal Viagra to 105 women with repeated IVF failure due to persistently thin endometrial linings. All of the women had experienced at least two (2) prior IVF failures attributed to intractably thin uterine linings. About 70% of these women responded to treatment with Viagra suppositories with a marked improvement in endometrial thickness and 45% of these women achieved live IVF- births following a single cycle of treatment with Viagra. Nine percent (9%) miscarried. None of the women who had failed to achieve an improvement in endometrial thickness following Viagra therapy, subsequently and who underwent embryo transfers achieved viable pregnancies.
2.Uterine Pathology:
It has long been suspected that anatomical defects of the uterus might result in infertility.
While myomas (fibroids) embedded deep in the uterine wall, are unlikely to cause infertility, an association between their presence and infertility has been observed in cases where they distort the uterine cavity, or protrude as submucous polyps through the endometrial lining. It would appear that even small submucous myomas have the potential to prejudice implantation.
Far too many infertile women found to have a partial or complete septum in the uterus are subjected to surgical excision of the septum with a promise that this will enhance subsequent implantation. This is an erroneous belief. Contrary to popular belief, the presence of a septum that partially or completely partitions the uterine cavity, while being responsible (in some cases) for late miscarriages and premature onset of labor, does NOT cause failed implantation.
It is likely that most surface lesions in the uterine cavity, whether due to an endometrial, placental or fibroid polyp (no matter how small), or intrauterine adhesions, have the potential to interfere with implantation by producing a local “inflammatory”- type response, not too dissimilar in nature from that which is caused by a foreign body such as a intrauterine contraceptive device. Unfortunately, a dye X-Ray test (hysterosalpingogram/HSG) will often miss many smaller such lesions. The only reliable methods for diagnosing even the smallest of such lesions, is through the performance of a hysterosongram (HSN),a hysteroscopy or an MRI.
Hysterosonogram (syn. Saline ultrasound): This procedure involves the trans-cervical injection of a physiological saline solution via a catheter, into the uterine cavity. The fluid distended cavity is then examined by vaginal ultrasound for any irregularities that might point to surface lesions such as polyps, fibroid tumors, scarring, or a uterine septum. If performed correctly, the HSN is highly effective in recognizing even the smallest surface lesions that protrude into the uterine cavity. It is less expensive, less traumatic, and diagnostically, equally reliable as hysteroscopy. The only disadvantage lies in the fact that if a lesion is detected, it may require the subsequent performance of hysteroscopic surgical approach to treating the problem..
Hysteroscopy: Diagnostic hysteroscopy is an office procedure that is performed under intravenous sedation, general or local anesthesia, with minimal discomfort to the patient. The procedure involves the insertion of a thin, lighted, telescope like instrument known as a hysteroscope through the vagina and cervix into the uterus in order to fully examine the uterine cavity. The uterus is first distended with carbon dioxide gas, which is passed through a sleeve adjacent to the hysteroscope. As is the case with FUS, diagnostic hysteroscopy facilitates examination of the inside of the uterus under direct vision for defects that might interfere with implantation.
We have observed that approximately 8% of candidates for IVF have intrauterine lesions that require attention prior to undergoing IVF in order to optimize the chances of a successful outcome. We strongly recommend that all patients who have such lesions undergo surgery (D&C and/or hysteroscopic resection) to correct the pathology prior to undergoing IVF. Depending on the severity and nature of the pathology, therapeutic hysteroscopy may require general anesthesia. If so, it should be performed in an outpatient surgical facility or in a conventional operating room.
3. Immunologic factors
The implantation process begins six or seven days after fertilization of the egg. At this time, specialized embryonic cells (i.e., the trophoblast), which later becomes the placenta; begin growing into the uterine lining. When the trophoblast and the uterine lining meet, they, along with Immune cells in the lining, become involved in a “cross talk” through mutual exchange of hormone-like substances called cytokines. Because of this complex immunologic interplay, the uterus is able to foster the embryo’s successful growth. Thus, from the very earliest stage of implantation the trophoblast establishes a foundation for the future nutritional, hormonal and respiratory interchange between mother and baby. In this manner, the interactive process of implantation is not only central to survival in early pregnancy but also to the quality of life after birth.
Considering its importance, it is not surprising that failure of proper function of this immunologic interaction during implantation has been implicated as a cause of recurrent miscarriage, late pregnancy fetal loss, IVF failure, and infertility. A partial list of immunologic factors that may be involved in these situations includes anti-phospholipid antibodies (APA), antithyroid antibodies (ATA), and most importantly activation of uterine natural killer cells (NKa). Presently, these immunologic markers in the blood can be only adequately measured by a handful of highly specialized reproductive immunology laboratories in the United States. I personally use Reproductive Immunology Associates in Van Nuys, CA or Reprosource in Boston, MA.
The Central role of Natural Killer cells: After ovulation and during early pregnancy, NK cells comprise more than 70% of the immune cell population of the uterine lining. NK cells produce a variety of local hormones known cytokines. Uncontrolled, excessive release of certain cytokines (i.e. TH-1 cytokines) is highly toxic to the trophoblast (“root system”) of the embryo” leading to their programmed death (apoptosis) and, subsequently to failed or compromised/dysfunctional implantation. In the following situations NK cells become activated, and start to produce an excess of TH-1 cytokines:
•Autoimmune Implantation Dysfunction: This is most commonly seen in association with a personal or family history of autoimmune diseases such as ith conditions such as Rheumatoid arthritis, hypothyroidism endometriosis and Lupus Erythematosus, Scleroderma, Dermatomyositis etc. It is also encountered in one third of women who have endometriosis (regardless of its severity), and in cases of “unexplained infertility” as well as with recurrent pregnancy loss (RPL).
•Alloimmune implantation dysfunction where the male and female partners share specific genetic (DQ-alpha and/or HLA) similarities This is commonly seen in cases of RPL and in cases of secondary infertility
Activated NK cells (NKa) can be detected through the K-562 target cell blood test and (more recently) through uterine biopsy for TH-1 cytokine activity. Treatment involves selective use of Intralipid (IL) or immunoglobulin (IVIG) therapy combined with oral steroids, initiated more 10-14 days prior to embryo transfer and in most cases of alloimmune implantation dysfunction, the transfer of a single blastocyst at a time.
Please call or email Julie Dahan, my patient concierge. She will guide you on how to set up an in-person or Skype consultation with me. You can reach Julie at on her cell phone or via email at any time:
Julie Dahan
•Email: Julied@sherivf.com
•Phone: 702-533-2691
?800-780-7437
Geoff Sher
I also suggest that you access the 4th edition of my book ,”In Vitro Fertilization, the ART of Making Babies”. It is available as a down-load through http://www.Amazon.com or from most bookstores and public libraries.
Hi Doctor.
I want to know your opinion of IUI success using Clomid and trigger hcg along with progesterone supp following IUI- for male morphology issues. My husband has low morph of 2%, count at 28mil, motility at 55% as of last SA 2 months ago. I have no known issues after numerous tests HSG and ultrasounds. We are currently on day 9 of my cycle follwing Clomid use, awaiting for the ok to trigger post blood work/sono.
I’m just curious if IUI is worth it or if we should go straight to IVF ICSI if this IUI fails. Thanks in advance.
I should also add that I am 30years old and my husband is 31. I’ve never gotten pregnant in the 16months of TTC. I did miscarry when I was 23 with a previous partner at 6 wks. Thanks again.
I personally do not recommend clomid-IUI. I prefer low dosage gonadotropin-IUI where success is greater.
Intrauterine insemination (IUI), the injection of sperm into the uterus by means of a catheter directed through the cervix, has been practiced for many years. The premise of this procedure is that sperm can reach and fertilize the egg more easily if placed directly into the uterine cavity. IUI is a procedure that bypasses the cervix and places specially prepared sperm into a woman’s uterus around the time of natural or induced ovulation. The suggested advantage of IUI is that it shortens the path that sperm would normally take to a woman’s fallopian tubes.
In the early ‘60s, physicians were injecting small quantities of raw, untreated semen, (sperm plus the seminal plasma) directly into the uterus at the time of expected ovulation. However, when more than 0.2 ml of semen was injected in to the uterus, serious and sometimes life endangering shock-like reactions often occurred. It was subsequently identified that the reason for such reactions related to the presence of prostaglandins within the seminal plasma. This led to the practice of injecting small amounts (less than 0.2 ml) of raw semen. However, the pregnancy rates were dismal and side effects, such as severe cramping and infection were rampant.
Soon after establishing the Northern Nevada Fertility Center in Reno in 1982 (the Nation’s first private in vitro fertilization (IVF program), we began to recognize the potential advantage of washing and centrifuging raw semen, so as to separate sperm from the seminal fluid, and thereby remove prostaglandins that cause most of the problems. We subsequently introduced and, thereupon, became the first to publish on intrauterine insemination (IUI) in the Journal, Fertility and Sterility (April 1984).
Indications for Intrauterine Insemination (IUI)
•Artificial insemination using frozen (donor) sperm: The recognition of HIV infection as a sexually transmitted disease, coupled with the fact that the virus is present in semen months before it can be detected in the blood, mandates that all donors have their semen cryopreserved (frozen) and stored for at least six months, whereupon, they be re-tested for HIV infection. Only upon confirmation of a negative test should the cryopreserved semen specimen be thawed and used for insemination. Since cryopreservation inevitably reduces sperm motility and function, it is not adequate to simply thaw the frozen specimen and then inseminate the raw semen into the vagina. Rather, the semen specimen should be processed for IUI. Provided that the recipient is ovulating normally, there is no need to administer fertility drugs, such as Clomiphene, Pergonal, etc.
•Artificial insemination with partner’s sperm: In cases of sexual dysfunction (impotence, retrograde ejaculation, etc.) or timing issues, partner’s sperm may need to be collected and processed in preparation of IUI.
•Cervical mucus hostility: Sometimes the cervical mucus acts as a barrier to the activation and passage of sperm as it passes through the cervical canal. Such hostility may be due to poor physical qualities of the mucus, cervical infection, or the presence of antisperm antibodies. In all but the latter situations, IUI can readily be performed during natural cycles, unless the woman has ovulation dysfunction. However, when infertility results from the presence of antibodies in the cervical mucus, IUI will likely be ineffectual and should be replaced by in vitro fertilization (IV).
•Absent or dysfunctional ovulation: In some cases where the woman requires the use of fertility drugs to induce normal ovulation, the concomitant performance of IUI might improve pregnancy rates.
Selecting the Fertility Drugs for Intrauterine Insemination (IUI)
Clomiphene citrate (Serophene, Clomid): Clomiphene citrate is taken orally for 5 days starting on day 2 to 5 of the menstrual cycle. Ovulation will usually occur 10 days later. In some cases, hCG is used to trigger the ovulation but this is often unnecessary. Clomiphene is a relatively inexpensive and safe method for inducing ovulation and this is why it is so commonly prescribed to women undergoing IUI. However, women receiving clomiphene have about a one third lower pregnancy rate per cycle than is the case using injectible fertility drugs. but it there are draw-backs. Here are a few reasons why this is so:
1)Clomiphene citrate is an anti-estrogen. .Ordinarily normally ovulating women (without exposure to clomiphene) produce a single dominant follicle which produces enough estrogen to promote optimal cervical mucous production and an adequate endometrial lining (>9mm) However, with clomiphene is used to induce ovulation, its anti-estrogenic effect blunts this response. In fact on clomiphene,it requires much more estrogen to override this effect such that unless at least 3 large follicles develop so as to allow the blood estradiol levels to rise above 400pg/ml, cervical mucus production and endometrial development will usually be insufficient to allow a healthy pregnancy to occur. Younger women with normal ovarian reserve (Day-3 FSH of <9miu/ml) will usually produce >3 follicles where as women over 40 years of age and those (regardless of age) with diminished ovarian reserve will rarely do so and thus are very unlikely to achieve viable pregnancies on clomiphene
2)Clomiphene induction of ovulation is associated with a 15-20% chance of a condition called luteinized unruptured follicle (LUF) syndrome where the hormonal changes that precede and accompany and follow ovulation (including a rise in blood progesterone level) occur but this happens without ovulation occurring .LUF syndrome thus leads to the erroneous conclusion that an egg has been released when, in fact, it remains “trapped” in the ovarian follicle.
3)More than 3 consecutive (back to back) of clomiphene will result in a very significant increase in the anti-estrogen effects (referred to in 1&2 above), such that unless a break of at least 1 full menstrual cycle is taken, the likelihood of a viable pregnancy declines to less than 10%, regardless of the woman’s age or her ovarian reserve.
4)Increased production of Luteinizing Hormone: Clomiphene causes the pituitary gland to produce increased amounts of FSH and LH. FSH promotes follicle growth development while excess LH causes the ovary to produce male hormones such as testosterone. While a little testosterone is indispensable to follicle and egg development, too much testosterone can have the reverse effect and harm egg development. This effect is even more deleterious in women with diminished ovarian reserve (elevated FSH levels) and those over 40 whose ovaries tend to produce more testosterone-like hormones.
The following additional factors must be considered when it comes to the use of Clomiphene:
1)It is best not being prescribed for more than three consecutive months in a row to anyone and certainly not without taking a full cycle break before restarting a fourth cycle of treatment. The reason is that after the 3-4 consecutive months of clomiphene therapy, the anti-estrogenic properties are compounded to the effect of virtually converting it to an anti-fertility drug. This explains why >80% of successful clomiphene pregnancies occur within the first 3 months of treatment, and why the vast majority of clomiphene pregnancies that occur after >3 consecutive (back-to-back) cycles of treatment are lost (usually due to early miscarriages).
2)Clomiphene should not be used in women that have diminished ovarian reserve (e.g. women with elevated FSH levels) or in women over 40 years of age.
The good news is that upon discontinuation of Clomiphene for 4-6 weeks, adverse effects disappear, leaving the slate clean.
The real benefit of clomiphene lies in its oral route of administration, low incidence of side effects, and its low cost. The birth rate per clomiphene IUI is about 7-10% per cycle of treatment (about 1/3 lower than when injectible fertility drugs are used.
Letrozole(Femara): Letrozole, like clomiphene is an oral agent induces ovulation that causes the pituitary gland to release large amounts of FSH as well as LH. The advantage that Letrozole has over clomiphene is that unlike the latter, it is NOT anti-estrogenic and thus does not compromise development of the uterine lining or adversely affect the production of cervical mucus. However as is the case with clomiphene, Letrozole causes increased LH release that can lead to overproduction of male hormones (e.g. testosterone) by the ovaries with potentially adverse effect on egg/embryo quality.
Thus while Letrozole does have potential advantages over clomiphene, the exaggerated LH-induced testosterone effect, especially in women over 40 years of age and/or those with evidence of diminished ovarian reserve limits its value.
Gonadotropins (Menopur, Gonal-f, Folistim and Puregon:) Women with absent or abnormal ovulation who require fertility drugs in preparation for IUI should receive gonadotropins. Granted, these agents are more expensive than clomiphene, but they have no anti-estrogenic properties.
The birth rate with gonadotropin IUI in women under 35 years of age (in the absence of male infertility, where it is much lower) is about 10-15%. However, success is affected by, and contingent upon, the procedure being performed (1) for the correct indications, (2) avoiding the performance of IUI when contraindications exist (see below) and, (3) where the woman is ovulating normally on her own. Success rates decrease as a woman’s age advances. In women 35-40 years of age the birth rate is 5-10% per cycle and for over 40 years, the birth rate per cycle is under 2%, declining to less than 1% after age 43.
Relative Contraindications to Intrauterine Insemination (IUI)
Advancing age: A woman’s natural ability to conceive declines with age starting after age 30. It falls more rapidly after age 35 and then, precipitously so after 40. The main reason for this is that the percentage of eggs that become chromosomally abnormal (aneuploid) through “wear and tear” increases as she gets older, such that by age 40 an ovulated egg is probably 3 times less likely to be able to propagate a viable pregnancy than at age 30. This explains the fact that under 35, the normally ovulating woman who receives injectible fertility drugs to induce ovulation has about a 10-12% chance of having a baby. In comparison, after age 40, the same woman would have about a 2% chance. For this reason alone, IUI is best suited to women under 35 and, in my opinion, should NOT be undertaken after age 40. Ages between 35 and 40 represent a “gray area.”
Significant Male Infertility: Contrary to popular belief, the performance of IUI in cases of male infertility does not improve success rates over regular and well-timed intercourse alone. In vitro fertilization with intracytoplasmic sperm injection (IVF/ICSI) is the only method to optimize pregnancy rates in association with male refractory infertility.
Tubal damage
1.Post-Pelvic Inflammatory Disease (PID): It is very important to understand that Fallopian tubes are not mere “pipes” through which sperm, egg and embryo must pass to achieve an intrauterine pregnancy. They are vital and sophisticated organs that serve intricate functions in the reproductive process. They transport sperm in the direction of the ovary, while at the same time, the fimbriae (petal-like extrusions at the end of the tube) apply themselves to the area of the ovary from which the egg is ovulating in order to pick up the extruding egg, and carry it back down the tube towards the uterus. About one third of the way back, the egg encounters the sperm and fertilization occurs. Thereupon, the resulting embryo is transported to the uterine cavity where it hopefully will implant.
PID, the commonest cause of damaged Fallopian tubes will, unless it is diagnosed and effectively treated very early on, inevitably and permanently disrupt the sophisticated function and continuity of the inner lining of both Fallopian tubes. In more severe cases, the intricate muscular arrangement of the tubal wall is also damaged, compromising the time-sensitive and programmed migration of sperm, egg and embryo. In advanced cases of PID, the fimbria fuse, thus compromising egg pick-up, and ultimately blocking the tube(s) completely.
PID almost always affects both Fallopian tubes. Indeed, one tube might be more damaged than the other, but both will be affected to a greater or lesser degree. That is why, even if one tube remains or is surgically rendered patent, the problem of markedly reduced fertility and the increased risk of a subsequent tubal pregnancy remains an ever present risk and reality. Thus, the use of fertility drugs to induce ovulation, or the use of microsurgery to open Fallopian tubes and free surrounding adhesions are often not curative of infertility. Furthermore, in cases where a pregnancy follows, the result is often a tubal (ectopic) gestation. This also serves to explain the fact that the intrauterine pregnancy rate following ovulation induction (with or without concomitant IUI) is likely to be to be at least 10 times lower in women with PID, and why, when a pregnancy does ensue, it is 10 times more likely to be a tubal (ectopic).
Thus, in women who have had PID, IVF is the only way to safely bypass the “damaged plumbing” and initiate a viable intrauterine pregnancy.
2.Post-Tubal Ligation. In large part, the same holds true following successful reconnection of previously ligated (tied) Fallopian tubes. The reason is that even with successful surgical reestablishment of tubal patency, there is always a degree of shortening of the tube(s) or a degree of damage due to surgical scarring of the inner lining of the tube(s). Even when tubes are normal, the birth rate per IUI cycle is about 10%, and following any form of tubal damage (PID or surgically-induced) the success is 5-10 times lower per IUI cycle (i.e. 1%-2%). Hence, IUI can hardly be justified in such cases, and IVF becomes the only effective and viable option.
Endometriosis:
While the exact cause of endometriosis remains an enigma, it is now apparent that immunologic dysfunction is a significant feature of this disease, and that a toxic environment exists in the pelvis (surrounding the tubes and ovaries) in patients with this condition. As a consequence, ovulation – whether spontaneous or induced by fertility drugs – commits the egg to pass through a toxic pelvic environment in order to reach the sperm waiting in the fallopian tube. This significantly reduces the egg’s fertilization potential. Furthermore, once the fertilized egg reaches the uterus, immunologic factors associated with endometriosis increase the risk of the embryo being rejected before pregnancy can be diagnosed. Such women may experience repeated “mini-miscarriages.”
In spite of these anti-fertility influences, many women with mild endometriosis do in fact conceive on their own, or following ovarian stimulation with fertility drugs. However, for reasons already referred to, the chances of conception are significantly reduced. And if they are ovulating normally on their own, the addition of fertility drugs will afford no additional benefit. Simply put, women in their late 20’s to early 30’s who have the time can anticipate about a 40% chance of conceiving on their own within two or three years (contingent upon their ovulating normally and having a fertile male partner). The occurrence of pregnancy in the latter cases occurs in spite of, rather than due to, such treatment. Such women may consider deferring any invasive treatments in favor of a “wait-and-see” approach. Conversely, women over the age of 35 whose egg quality is inevitably on the decline, IVF offers the only rational approach.
Fertility Drugs and Multiple Births
Normally ovulating women usually develop a number of follicles (fluid filled spaces within the ovary (ies) that contain eggs and produce estrogen) during the first week of the menstrual cycle. All but one (and sometimes two) of the follicles fail to develop to the point of being eligible for ovulation. The process is known as Selection. It is important to recognize that in all normally ovulating women, the one or two follicles selected to ovulate will inevitably be larger than the remaining follicles, regardless of whether the woman is receiving fertility agents such as Clomiphene or Pergonal, etc. Simply put, one or two follicles will always show enhanced development over the others, and as soon as these selected follicles ovulate, all the remaining follicles are rendered incapable of following suit. As a result, normally ovulating women no not have a greater incidence of high order multiple pregnancies. In contrast, women who do not ovulate at all, and those who ovulate irregularly or dysfunctional do not have the ability to select one or two dominant follicles for ovulation. As such, following the administration of fertility drugs for ovarian stimulation, numerous follicles may develop at the same rate, and several eggs can be ovulated simultaneously. This translates into a greater chance of pregnancy, but also a greater chance of multiple pregnancies. It is interesting that almost all reported cases of high order multiple pregnancies (greater than twins) following the use of fertility drugs have occurred in women who do not ovulate normally on their own.
It follows that only those women with absent or abnormal ovulation are at-risk for high order multiple pregnancies. They, therefore, need to be counseled regarding the consequences of premature birth and the availability of selective pregnancy reduction towards the end of the third month of pregnancy. Another alternative is to avoid the issue completely by choosing in vitro fertilization (IVF), where the number of potential babies can be limited by the number of embryos transferred to the uterus.
It is indeed unfortunate that fertility treatment has become so regimented that most patients find themselves being ushered through a scripted treatment process. As an example, clomiphene, though favored for its convenience and low cost, does NOT yield the same success as IUI with gonadotropin stimulation. In fact the per-cycle success rate of IUI using clomiphene is about 30% less. Also, women with endometriosis (regardless of severity) have much lower success with IUI (see above). Women over age 40 have such a low success with IUI that they cannot afford the time wasted in the process. Such women need IVF.
For the majority of couples who require an individualized strategic plan of action at an early stage, such an approach is emotionally, physically, and financially draining, leaving them both suspicious and critical of the intent of the medical profession.
The introduction of inexpensive Micro-IVF changes the landscape. In fact, the success rate is three times higher than with IUI. This plus the low the relatively low cost of Micro-IVF (as compared with conventional IVF) is a major advantage of the approach.
Hope this helps.
Geoff Sher