Previous Ectopic, Left Salpingectomy, Painful HSG: Can I Still Get Pregnant?

Question:

Dear Dr. Ramirez,

Approximately 8 years ago, after the birth of my first child, I had an IUD (copper T) inserted. About 6 months later, I lost the thread,and went back to the medical practice for it to be removed and replaced, but was told that losing the thread wasn't a threat. Anyway, 2 more months later, I had an ectopic pregnancy which ruptured my left fallopian tube and resulted in an emergency salpingectomy...... the entire tube was removed (about 7 cm).

Fast forward 8 years, I am ready to have another child, however an HSG (hysterosalpingogram) revealed proximal blockage to my right tube. I was in an immense amount of pain during this procedure.....that I cried. I am not convinced that the results of the HSG are accurate because of the pain (similar to labor pains)that I felt. Also because the ectopic was due to a foreign object, I don't feel that there should be anything wrong with my right tube. Anyway, my questions are as follows and I really appreciate your time:

1. Since the IUD was the cause of my ectopic pregnancy, would I be considered a high risk for another ectopic (assuming my right tube is not blocked#?

2. Based on the pain that I was in, could the proximal blockage be a result of a tubal spasm? What are the stats on false hsg readings for proximal blockage?

3. Is it possible that a left salpingectomy could result in scar tissue blocking the remaining right tube?

4. And finally, my uterus and ovaries (I still have both) are healthy per the scan. There is evidence of scarring from my previous c-section. How feasible is it for my right tube to pick up an egg from my left ovary as I usually feel ovulation cramping on my left?

Thank you very much in anticipation. E. (age 35),USA

Answer:

Hello E. from the U.S.,

You cannot be sure that the IUD was the cause of the ectopic. That would be a false assumption. Certainly having an IUD in place can increase the risk of an ectopic but intrauterine pregnancies also occur with IUD's in place. The IUD does not block the tube, it creates a hostile bed for implantation of the embryo. Ectopic pregnancies mostly occur because of fine adhesions within the tube which prevent the embryo from migrating into the uterus. As a result, the embryo implants there. The most common reason for these adhesions are from some form of inflammatory event in the past, often a sub-clinical (no symptoms) infection by a bacteria. Chlamydia is the most common form but some studies also point to multiple different bacteria. In any case, this infection gets into the tube, causes the tubal lining to become inflamed thereby resulting in scar tissue formation. It is possible that this inflammation is was led to the blockage of the right tube, whereas the left tube was only partially blocked, hence the ectopic.

In terms of the pain with the HSG, yes, it could mean that you had tubal spasm but the more likely source was that because the tube is blocked, the increased pressure or pushing by the doc caused increased stretching of the uterus and hence increased pain. I would have to look up the statistics for false readings on HSG, but it is low and so HSG is the gold standard for the diagnosis of tubal blockage. I am sure there is some false positive or false negative readings, however.

If the surgery was performed without incident, a salpingectomy on the left should not cause blockage of the right tube at its entrance. Any pelvic surgery could lead to scar tissue formation within the pelvis and lead to blockage at the end of the tube, however (your previous c-section).

If the right tube is normal at the fimbriated end, and there are no adhesions within the pelvis, then there is a good chance of egg pickup even if ovulation is from the opposite side. The reason is that the egg from one side of the ovary does not necessarily go directly to the tube on that side. The opening to the tube is not that close to the ovary. In fact, the egg falls into a pool of fluid within the culdesac, a space behind the uterus, where the tube lies and through fluid motion, gets to the tube. So pregnancy can and have occurred in patients with a functioning ovary on one side and a normal tube, without an ovary, on the opposite side.

Good Luck,

Dr. 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: Dear Dr. Ramirez, Thank you very much for your response. You are very knowledgeable and I feel very enlightened. Again, many thanks, E.

Hydrosalpinges and Miscarriages

Question:
I am 34 years old, writing from Australia. I have had one child (3 years old) and two miscarriages. The first miscarriage (embryo stopped growing 6.5 weeks) on Jan. 09, the second Nov. 09 (9.5 weeks). Just before I became pregnant with the most recent one, I found out I had bilateral hydrosalpinges that showed up on the transvaginal ultrasound.

We were considering having surgery to remove the fallopian tubes ( on the advice of an IVF specialist) then start IVF, when suddenly we found out we were pregnant. Unfortunately, at 9.5 weeks I had a miscarriage.

We are awaiting results of tissue testing to determine if chromosomal abnormality exists. We are also booked in for a repeat ultrasound.

1. Does having bilateral hydrosalpinges cause you to miscarry at 10 weeks pregnant? If so, by how much (i.e. what %)? Gyn says they do not make you miscarry but more likely to not allow implantation.

2. Would the preferred option be to clip them, or just remove them and commence IVF even though I have gotten pregnant naturally? Or would the best option be to give it one more go naturally?

Any other advice would be appreciated.

Answer:

Hello,

You present a very interesting scenario because women with hydrosalpinges usually cannot get pregnant. The reason is because the cause of the hydrosalpinges is a tubal infection that caused the damage to the tubes. Not only did it cause the tube to be obstructed, but it even usually leads to damage of the inner lining of the tube that is important for egg and sperm transport. Therefore the recommendation is to proceed with IVF. Your case negates that thinking.

Hydrosalpinges can lead to non-implantation, and by the same mechanism, miscarriage. It is thought that the hydrosalpinx has inflammatory fluid within that migrates back into the uterus. Several studies have found decreased pregnancy rates in IVF when hydrosalpinges are present. That is why it is recommended to clip the tubes or remove them prior to IVF. This inflammatory fluid causes a mild inflammation of the uterine lining causing the lack of implantation. If implantation were to occur, I would expect that the same inflammation could lead to the death of the embryo from a mild amnionitis. That, however, is theoretical.

Because you have shown that you are the exception to the rule, you have two options. You can have a laparoscopy and have the tubes opened (salpingoplasty) or you can have the tubes clipped/removed. If the tubes are opened, you have the opportunity to become pregnant naturally, like you showed that you could. It would allow the fluid to escape into the abdomen, thereby reducing the chances of backflow into the uterus. However, if there is tubal damage within, you are at increased risk of a tubal pregnancy called an ectopic pregnancy. That can be life threatening if it ruptures and you hemorrhage. The second option, which then requires IVF is certainly the safer option, but the more expensive option. You need to discuss these two options with your docs.

If I were counseling you, I would almost be inclined to recommend the former (tubal repair) as long as you were completely aware of the risk of ectopic and willing to take that chance. I would then watch you very closely if you were to become pregnant to rule out the ectopic at the beginning of your pregnancy.

I hope that this answers your questions.

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