Woman Wonders: Natural FET Cycle Vs. Controlled FET Cycle?

Question:

Dr. Ramirez, I have some embryos frozen. I have adenomyois and endo and chronic endometritis diagnosed.

Have done antibiotic treatment with uterine lavages and IVs.

After depot lupron treatment, is it better to do a natural FET (frozen embryo transfer) or medicated FET. Since it takes about 2-3 months to wait for period to arrive is it better to do a medicated FET? I am concerned about medicated FET as the last time I did a medicated FET I had fluid in the uterus although nearer to transfer it disappeared and I did go on to transfer although BFN (big fat negative).

My RE seems to want to wait for a period before transfer but would not that waste 2-3 months since you said the endo can return in 6 months? Will the cycle be regular and as in ovulation or will it be not regular when I do FET. At the moment my cycles are regular. I have also heard of high dose progesteone treatments treating endo and adeno. Can you explain how this works?

I am confused what to do as we have limited embryos and want to do everything as possible as once the embryos are used up we are done.

Thank you. R. from Rhode Island

Answer:

Hello R. from the U.S. (Rhode Island),

Your RE should have explained that one of the critical steps in getting pregnant, natural or with IVF, is the state of the uterine lining at the time the embryo reaches it for implantation. We know that there is a very limited time that the embryo can implant and the endometrial lining has to be in a very specific and correct microscopic state for implantation to occur. This is where timing is absolutely essential. If you miss this "implantation window", then it will fail.

Conceivably you could do this with a natural cycle, but then there is a wider margin of error because we don't know exactly what the timing is or what is going on microscopically in the uterus. For this reason, we do not do this in FET cycles. FET cycles are always done as a controlled and programmed cycle. With this protocol, you can have a period induced artificially with medication and then start the cycle, but most clinics will want their patients to be on the birth control pill for at least two weeks period to the FET cycle in order to suppress the ovaries, which then allow complete control of the FET cycle.

If this is in fact gong to be your last attempts at getting pregnant, then I would make absolutely certain that you are in the best clinic that you can be in and that it will give you the highest chances of success. A good clinic would be able to answer these questions and make sure everything is clearly laid out.

Finally, in terms of progesterone treatment with endometriosis and adenomyosis, progesterone has suppressive action or counteracts estrogen in estrogen receptors. AS you probably know, endometriosis/adenomyosis are stimulated by estrogen and therefore, will be somewhat suppressed by progesterone. However, there is still some small amount of stimulation so progesterone is not the perfect treatment. Estrogen receptor blockers such as Lupron are better at suppressing endometriosis. Progesterone is used mainly to slow down the recurrence of the endometriosis after they have been treated with surgery or Lupron.

Good Luck,

Dr. Edward J. Ramirez, M.D., FACOG
Executive Medical Director
The Fertility and Gynecology Center
Monterey Bay IVF Program
www.montereybayivf.com
Monterey, California, U.S.A.

American In The UK Taking Clomid & Has Thin Uterine Lining: Needs A Specialist

Question:

Hi Dr. Ramirez,

I will try to keep this as concise as possible. I am very healthy, slim and 29 years old, and have never had issues with my periods. My husband (29 years also) and I conceived on our first try last year, but unfortunately had a missed M/C at 12 wks (fetus stopped growing at 8 wks). Tests confirmed non-recurring genetic abnormality. After the D&C I had only spotting, until 5 days after when I had a very heavy bleed with large clots lasting only one day. Then I got my first period 6 weeks later. The 3 subsequent cycles were 42-45 days.

Pelvic ultrasound revealed PCOS, hormone levels were all normal, including thyroid. Lining on this ultrasound was only 5.5 on day 40, just before I started my period. I have just completed one round of 50 mg Clomid unmonitored due to travel, and BBT shows clear ovulation on day 18 with 12 day luteal phase. This cycle I have had my first follicle tracking on day 11 which showed dominant follicle at 15 mm, but lining of only 4 mm. My questions are:

1. Could the thin lining be due to problems from the D&C?

2. My gyn prescribed Progesterone pessaries for the second half of this cycle to help thicken the lining- is this the appropriate treatment?

3. When should I consider seeing a fertility specialist?

Thank you for your time- I am writing from London. M.

Answer:

Hello M. from the U.K.,

A thin lining could certainly be due to an over-vigorous D&C, leading to scarring in the uterus. This is called Asherman's syndrome. A procedure called hysteroscopy can be done to evaluate the uterus cavity for this. However, that being said, it is not very common to develop this with D&Cs. The more common possibility is a thin lining due to the use of Clomid.

Clomid is an estrogen receptor blocker and so blocks estrogen receptors at the endometrium (uterine lining). For that reason, many patients have to use extra estrogen given vaginally in order to overcome the blockage from the Clomid, or they use a different medication such as Femara or injectables.

Progesterone is NOT the hormone that thickens the uterine lining. Endometrial thickening and priming is dependent on ESTROGEN in the first half of the cycle. The fact that your doc told you the wrong info makes me skeptical that he/she clearly understands the physiology of this treatment. So, I think you should go see a fertility specialist instead. Without proper estrogen priming, the uterine lining will not be ready for implantation. The progesterone, which is given after ovulation, is to convert the endometrial lining to develop the "pinopodes" that are necessary for implantation. (See diagram up above, the "pinopodes" are small finger-like protrusions in the endometrium) Without the proper priming, the pinopodes will not develop.

Good Luck and keep trying, you should succeed with the right treatment path,

Edward J. Ramirez, M.D., FACOG

Executive Medical Director

The Fertility and Gynecology Center

Monterey Bay IVF Program

http://www.montereybayivf.com/

Monterey, California, U.S.A.

Comment: Thank you Dr. Ramirez! I am very grateful to have your opinion, which confirmed to me that I need to see a specialist. As an American living abroad, it can be daunting to find the same quality of health care that we take for granted in the US. Again, I really appreciate your help.

Pregnancy after endometrial ablation?

Question:
Is there any possible way of conceiving after an endometrial ablation? Is there any way of repairing the uterine lining?

Answer:
Hello Leah from Canada,
　
If the endometrial ablation was performed correctly, which destroys and scars the endometrial lining/cavity, pregnancy is not possible. However, sometimes pregnancies occur where some area of the endometrium has not been ablated, which is an error in technique. In these cases, the patient will usually continue to have menstrual cycles. There is absolutely no way to repair the uterine lining. The only option would be to use a surrogate if pregnancy were desired and the ovaries were still functioning.

Sincerely,

Edward J. Ramirez, M.D., FACOG
Executive Medical Director
The Fertility and Gynecology Center
Monterey Bay IVF Program
www.montereybayivf.com
Monterey, California, U.S.A.

for additional information check out my blog at http://womenshealthandfertility.blogspot.com check me out on facebook and twitter with me at @montereybayivf.