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.
Dear Dr.Sher,
First, allow me to thank you for the time you take to answer to our questions.
This cycle of 15th September I am planning to start the IVF -PGS/NGS after 10 chemical pregnancy losses. I have endometriosis 1st stage (same stage for 8 years), Hashimoto and MTHFR homozigous. I am 34 years old and 80 kg.
1. Is OK to take prednisone 10mg or 20 mg on the 1st day of cycle and to increase it to 40 mg after the transfer?
I am also planning to use intralipid 10-14 days before transfer and another one at positive BHCG.
2. In all my pregnancies I have used enoxaparine 0.4 x day after a positive BHCG. This time we want to take it at the first day of cycle. Which is your opinion about it? I do take every day 100mg acetylsalicylic acid due to the MTHFR. When I had Covid months ago I did use enoxaparine 0.6 x 2 daily and I didnt have problems. Is it safe if I take (day 1 of cycle) aspirin and enoxaparine 0.4 or 0.6 x1 daily and after transfer enoxaparine 0.6×2 daily?
3. On 7th Septemeber I will have the second dose of Pfizer vaccine. Would you reccomand to continue with the stimulation on 15th or is better to wait next cycle?
Thank you very much in advance.
Best,
Ola
I see no reason why you should not go forward with the stimulation. HOWEVER before doing anything, please carefully review the narrative below as it pertains to recurrent pregnancy loss (RPL).
When it comes to reproduction, humans are the poorest performers of all mammals. In fact we are so inefficient that up to 75% of fertilized eggs do not produce live births, and up to 30% of pregnancies end up being lost within 10 weeks of conception (in the first trimester). RPL is defined as two (2) or more failed pregnancies. Less than 5% of women will experience two (2) consecutive miscarriages, and only 1% experience three or more.
Pregnancy loss can be classified by the stage of pregnancy when the loss occurs:
•Early pregnancy loss (first trimester)
•Late pregnancy loss (after the first trimester)
•Occult “hidden” and not clinically recognized, (chemical) pregnancy loss (occurs prior to ultrasound confirmation of pregnancy)
•Early pregnancy losses usually occur sporadically (are not repetitive).
In more than 70% of cases the loss is due to embryo aneuploidy (where there are more or less than the normal quota of 46 chromosomes). Conversely, repeated losses (RPL), with isolated exceptions where the cause is structural (e.g., unbalanced translocations), are seldom attributable to numerical chromosomal abnormalities (aneuploidy). In fact, the vast majority of cases of RPL are attributable to non-chromosomal causes such as anatomical uterine abnormalities or Immunologic Implantation Dysfunction (IID).
Since most sporadic early pregnancy losses are induced by chromosomal factors and thus are non-repetitive, having had a single miscarriage the likelihood of a second one occurring is no greater than average. However, once having had two losses the chance of a third one occurring is double (35-40%) and after having had three losses the chance of a fourth miscarriage increases to about 60%. The reason for this is that the more miscarriages a woman has, the greater is the likelihood of this being due to a non-chromosomal (repetitive) cause such as IID. It follows that if numerical chromosomal analysis (karyotyping) of embryonic/fetal products derived from a miscarriage tests karyotypically normal, then by a process of elimination, there would be a strong likelihood of a miscarriage repeating in subsequent pregnancies and one would not have to wait for the disaster to recur before taking action. This is precisely why we strongly advocate that all miscarriage specimens be karyotyped.
There is however one caveat to be taken into consideration. That is that the laboratory performing the karyotyping might unwittingly be testing the mother’s cells rather than that of the conceptus. That is why it is not possible to confidently exclude aneuploidy in cases where karyotyping of products suggests a “chromosomally normal” (euploid) female.
Late pregnancy losses (occurring after completion of the 1st trimester/12th week) occur far less frequently (1%) than early pregnancy losses. They are most commonly due to anatomical abnormalities of the uterus and/or cervix. Weakness of the neck of the cervix rendering it able to act as an effective valve that retains the pregnancy (i.e., cervical incompetence) is in fact one of the commonest causes of late pregnancy loss. So also are developmental (congenital) abnormalities of the uterus (e.g., a uterine septum) and uterine fibroid tumors. In some cases intrauterine growth retardation, premature separation of the placenta (placental abruption), premature rupture of the membranes and premature labor can also causes of late pregnancy loss.
Much progress has been made in understanding the mechanisms involved in RPL. There are two broad categories:
1.Problems involving the uterine environment in which a normal embryo is prohibited from properly implanting and developing. Possible causes include:
•Inadequate thickening of the uterine lining
•Irregularity in the contour of the uterine cavity (polyps, fibroid tumors in the uterine wall, intra-uterine scarring and adenomyosis)
•Hormonal imbalances (progesterone deficiency or luteal phase defects). This most commonly results in occult RPL.
•Deficient blood flow to the uterine lining (thin uterine lining).
•Immunologic implantation dysfunction (IID). A major cause of RPL. Plays a role in 75% of cases where chromosomally normal preimplantation embryos fail to implant.
•Interference of blood supply to the developing conceptus can occur due to a hereditary clotting disorder known as Thrombophilia.
2.Genetic and/or structural chromosomal abnormality of the embryo.Genetic abnormalities are rare causes of RPL. Structural chromosomal abnormalities are slightly more common but are also occur infrequently (1%). These are referred to as unbalanced translocation and they result from part of one chromosome detaching and then fusing with another chromosome. Additionally, a number of studies suggest the existence of paternal (sperm derived) effect on human embryo quality and pregnancy outcome that are not reflected as a chromosomal abnormality. Damaged sperm DNA can have a negative impact on fetal development and present clinically as occult or early clinical miscarriage. The Sperm Chromatin Structure Assay (SCSA) which measures the same endpoints are newer and possibly improved methods for evaluating.
IMMUNOLOGIC IMPLANTATION DYSFUNCTION
Autoimmune IID: Here an immunologic reaction is produced by the individual to his/her body’s own cellular components. The most common antibodies that form in such situations are APA and antithyroid antibodies (ATA).
But it is only when specialized immune cells in the uterine lining, known as cytotoxic lymphocytes (CTL) and natural killer (NK) cells, become activated and start to release an excessive/disproportionate amount of TH-1 cytokines that attack the root system of the embryo, that implantation potential is jeopardized. Diagnosis of such activation requires highly specialized blood test for cytokine activity that can only be performed by a handful of reproductive immunology reference laboratories in the United States.
Alloimmune IID, i.e., where antibodies are formed against antigens derived from another member of the same species, is believed to be a relatively common immunologic cause of recurrent pregnancy loss.
Autoimmune IID is often genetically transmitted. Thus it should not be surprising to learn that it is more likely to exist in women who have a family (or personal) history of primary autoimmune diseases such as lupus erythematosus (LE), scleroderma or autoimmune hypothyroidism (Hashimoto’s disease), autoimmune hyperthyroidism (Grave’s disease), rheumatoid arthritis, etc. Reactionary (secondary) autoimmunity can occur in conjunction with any medical condition associated with widespread tissue damage. One such gynecologic condition is endometriosis. Since autoimmune IID is usually associated with activated NK and T-cells from the outset, it usually results in such very early destruction of the embryo’s root system that the patient does not even recognize that she is pregnant. Accordingly the condition usually presents as “unexplained infertility” or “unexplained IVF failure” rather than as a miscarriage.
Alloimmune IID, on the other hand, usually starts off presenting as unexplained miscarriages (often manifesting as RPL). Over time as NK/T cell activation builds and eventually becomes permanently established the patient often goes from RPL to “infertility” due to failed implantation. RPL is more commonly the consequence of alloimmune rather than autoimmune implantation dysfunction.
However, regardless, of whether miscarriage is due to autoimmune or alloimmune implantation dysfunction the final blow to the pregnancy is the result of activated NK cells and CTL in the uterine lining that damage the developing embryo’s “root system” (trophoblast) so that it can no longer sustain the growing conceptus. This having been said, it is important to note that autoimmune IID is readily amenable to reversal through timely, appropriately administered, selective immunotherapy, and alloimmune IID is not. It is much more difficult to treat successfully, even with the use of immunotherapy. In fact, in some cases the only solution will be to revert to selective immunotherapy plus using donor sperm (provided there is no “match” between the donor’s DQa profile and that of the female recipient) or alternatively to resort to gestational surrogacy.
DIAGNOSING THE CAUSE OF RPL
In the past, women who miscarried were not evaluated thoroughly until they had lost several pregnancies in a row. This was because sporadic miscarriages are most commonly the result of embryo numerical chromosomal irregularities (aneuploidy) and thus not treatable. However, a consecutive series of miscarriages points to a repetitive cause that is non-chromosomal and is potentially remediable. Since RPL is most commonly due to a uterine pathology or immunologic causes that are potentially treatable, it follows that early chromosomal evaluation of products of conception could point to a potentially treatable situation. Thus I strongly recommend that such testing be done in most cases of miscarriage. Doing so will avoid a great deal of unnecessary heartache for many patients.
Establishing the correct diagnosis is the first step toward determining effective treatment for couples with RPL. It results from a problem within the pregnancy itself or within the uterine environment where the pregnancy implants and grows. Diagnostic tests useful in identifying individuals at greater risk for a problem within the pregnancy itself include:
Karyotyping (chromosome analysis) both prospective parents
•Assessment of the karyotype of products of conception derived from previous miscarriage specimens
•Ultrasound examination of the uterine cavity after sterile water is injected or sonohysterogram, fluid ultrasound, etc.)
•Hysterosalpingogram (dye X-ray test)
•Hysteroscopic evaluation of the uterine cavity
•Full hormonal evaluation (estrogen, progesterone, adrenal steroid hormones, thyroid hormones, FSH/LH, etc.)
•Immunologic testing to include:
a)Antiphospholipid antibody (APA) panel
b)Antinuclear antibody (ANA) panel
c)Antithyroid antibody panel (i.e., antithyroglobulin and antimicrosomal antibodies)
d)Reproductive immunophenotype
e)Natural killer cell activity (NKa) assay (i.e., K562 target cell test)
f)Alloimmune testing of both the male and female partners
TREATMENT OF RPL
Treatment for Anatomic Abnormalities of the Uterus: This involves restoration through removal of local lesions such as fibroids, scar tissue, and endometrial polyps or timely insertion of a cervical cerclage (a stitch placed around the neck of the weakened cervix) or the excision of a uterine septum when indicated.
Treatment of Thin Uterine Lining: A thin uterine lining has been shown to correlate with compromised pregnancy outcome. Often this will be associated with reduced blood flow to the endometrium. Such decreased blood flow to the uterus can be improved through treatment with sildenafil and possibly aspirin.
Sildenafil (Viagra) Therapy. Viagra has been used successfully to increase uterine blood flow. However, to be effective it must be administered starting as soon as the period stops up until the day of ovulation and it must be administered vaginally (not orally). Viagra in the form of vaginal suppositories given in the dosage of 25 mg four times a day has been shown to increase uterine blood flow as well as thickness of the uterine lining. To date, we have seen significant improvement of the thickness of the uterine lining in about 70% of women treated. Successful pregnancy resulted in 42% of women who responded to the Viagra. It should be remembered that most of these women had previously experienced repeated IVF failures.
Use of Aspirin: This is an anti-prostaglandin that improves blood flow to the endometrium. It is administered at a dosage of 81 mg orally, daily from the beginning of the cycle until ovulation.
Treating Immunologic Implantation Dysfunction with Selective Immunotherapy: Modalities such as IL/IVIg, heparinoids (Lovenox/Clexane), and corticosteroids (dexamethasone, prednisone, prednisolone) can be used in select cases depending on autoimmune or alloimmune dysfunction.
The Use of IVF in the Treatment of RPL
In the following circumstances, IVF is the preferred option:
1.When in addition to a history of RPL, another standard indication for IVF (e.g., tubal factor, endometriosis, and male factor infertility) is superimposed.
2.In cases where selective immunotherapy is needed to treat an immunologic implantation dysfunction.
The reason for IVF being a preferred approach in such cases is that in order to be effective, the immunotherapy needs to be initiated well before spontaneous or induced ovulation. Given the fact that the anticipated birthrate per cycle of COS with or without IUI is at best about 15%, it follows that short of IVF, to have even a reasonable chance of a live birth, most women with immunologic causes of RPL would need to undergo immunotherapy repeatedly, over consecutive cycles. Conversely, with IVF, the chance of a successful outcome in a single cycle of treatment is several times greater and, because of the attenuated and concentrated time period required for treatment, IVF is far safer and thus represents a more practicable alternative
Since embryo aneuploidy is a common cause of miscarriage, the use of preimplantation genetic diagnosis (PGD), with tests such as CGH, can provide a valuable diagnostic and therapeutic advantage in cases of RPL. PGD requires IVF to provide access to embryos for testing.
There are a few cases of intractable alloimmune dysfunction due to absolute DQ alpha matching where Gestational Surrogacy or use of donor sperm could represent the only viable recourse, other than abandoning treatment altogether and/or resorting to adoption. Other non-immunologic factors such as an intractably thin uterine lining or severe uterine pathology might also warrant that last resort consideration be given to gestational surrogacy.
The good news is that if a couple with RPL is open to all of the diagnostic and treatment options referred to above, a live birthrate of 70%–80% is ultimately achievable.
I strongly recommend that you visit http://www.SherIVF.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.
•The IVF Journey: The importance of “Planning the Trip” Before Taking the Ride”
•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
•Ovarian Stimulation for IVF using GnRH Antagonists: Comparing the Agonist/Antagonist Conversion Protocol.(A/ACP) With the “Conventional” Antagonist Approach
•Ovarian Stimulation in Women Who have Diminished Ovarian Reserve (DOR): Introducing the Agonist/Antagonist Conversion protocol
•Anti Mullerian Hormone (AMH) Measurement to Assess Ovarian Reserve and Design the Optimal Protocol for Controlled Ovarian Stimulation (COS) in IVF.
•Human Growth Hormone Administration in IVF: Does it Enhances Egg/Embryo Quality and Outcome?
•The BCP: Does Launching a Cycle of Controlled Ovarian Stimulation (COS). Coming off the BCP Compromise Response?
•Blastocyst Embryo Transfers Should be the Standard of Care in IVF
•IVF: How Many Attempts should be considered before Stopping?
•“Unexplained” Infertility: Often a matter of the Diagnosis Being Overlooked!
•IVF Failure and Implantation Dysfunction:
•The Role of Immunologic Implantation Dysfunction (IID) & Infertility (IID):PART 1-Background
•Immunologic Implantation Dysfunction (IID) & Infertility (IID):PART 2- Making a Diagnosis
•Immunologic Dysfunction (IID) & Infertility (IID):PART 3-Treatment
•Thyroid autoantibodies and Immunologic Implantation Dysfunction (IID)
•Immunologic Implantation Dysfunction: Importance of Meticulous Evaluation and Strategic Management:(Case Report
•Intralipid and IVIG therapy: Understanding the Basis for its use in the Treatment of Immunologic Implantation Dysfunction (IID)
•Intralipid (IL) Administration in IVF: It’s Composition; How it Works; Administration; Side-effects; Reactions and Precautions
•Natural Killer Cell Activation (NKa) and Immunologic Implantation Dysfunction in IVF: The Controversy!
•Endometrial Thickness, Uterine Pathology and Immunologic Factors
•Vaginally Administered Viagra is Often a Highly Effective Treatment to Help Thicken a Thin Uterine Lining
•Treating Out-of-State and Out-of-Country Patients at Sher-IVF in Las Vegas:
•A personalized, stepwise approach to IVF
•How Many Embryos should be transferred: A Critical Decision in IVF.
•The Role of Nutritional Supplements in Preparing for IVF
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ADDENDUM: PLEASE READ!!
INTRODUCING SHER FERTILITY SOLUTIONS (SFS)
Founded in April 2019, Sher Fertility Solutions (SFS) offers online (Skype/FaceTime) consultations to patients from > 40 different countries. All consultations are followed by a detailed written report presenting my personal recommendations for treatment of what often constitute complex Reproductive Issues.
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Geoff Sher
Hello Dr. Sher – I have three Euploid Embryos from my last cycle (yay!) and I’m trying to figure out which one to transfer for my upcoming FET at the end of this month. We already have a beautiful daughter so we are interested in transferring our only male embryo. He is a Euploid 4BB embryo and he was frozen on day 6. What would you give him in terms of a success rate for a pregnancy? We also have two Euploid 4AA female embryos. One was frozen on Day 5 and one on Day 6. What would their success rates be, in your opinion? Thank you!!
The fact that the blastocyst is euploid, largely negates any downside from being day 6 rather than day 5.
Good luck!
Geoff Sher
Please let me know if you get this. It is 9/2/2021 at 12:09 PM EST.
Got it!
Geoff Sher
I am a 33 y/o graduate student, who is considering fertility preservation. My partner and I are considering egg and embryo freezing to give us options in the future. My concern is the cryoprotectant toxicity that does not seem to be well studied. I have been looking at papers that examine vitrification which uses a higher concentration of the cryoprotectants than the slow freezing process does. I know that Vitrification is the new norm at most fertility clinics because of it’s higher success rates of thawing and viability.
I also know that Vitrification is a relatively new procedure, but I was wondering if you had any information on how it may affect the long term health of frozen eggs and embryos.
No additional information, except that in my opinion, vitrification is highly unlikely to be teratogenic.
Geoff Sher
Hi Dr. Sher,
I am a 33 y/o woman, who is considering fertility preservation. My partner and I are considering egg and embryo freezing to give us options in the future. My concern is the cryoprotectant toxicity that does not seem to be well studied especially for vitrification which uses a higher concentration of the cryoprotectants. I was wondering if you would share any thoughts you may have on the matter that may help us feel a bit more at ease. Thank you!
Here’s a couple articles I found so far in my research: (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4620521/)
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7081748/
This article discusses: “Freezing and thawing per se and cryoprotectants have both been implicated in epigenetic changes in animal studies. In contrast to fresh embryo transfer (excluding egg donation), use of frozen embryo transfer can be performed in artificial (administration of estrogen and progesterone only) and spontaneous cycles. A Danish study found increased risks for both leukemia and sympathetic nervous system tumors in children born after the use of progesterone during fertility treatment; however, no information on use of ART was available. Frozen embryo transfer is the only procedure in Denmark (excluding fresh egg donation) in which estrogen, an established carcinogen, is part of the treatment protocol, and progesterone, a drug classified as “reasonably anticipated to be a human carcinogen,” is used approximately 10 weeks into pregnancy. Although no increased risk was found to be associated with either of these hormonal fertility drugs, the duration or timing of exposure may be crucial for an effect.” (5th paragraph under Discussion section)
Thank you for sharing.
Geoff Sher