Sunday, June 28, 2009

MTHFR and flying

I ran across an interesting discussion board post this weekend that gave me chills (not the good kind). It was a lady discussing a similar clotting condition to mine but hers is more severe.

Bear with me while I provide some background on this particular clotting disorder.

I had a DNS analysis performed on the MTHFR (methylenetetrahydrofolate reductase) gene a while back. When they perform the analysis, they are concerned with two different DNS sequence mutations - C677T and A1298C. It was determined that I am heterozygous for the A1298C mutation.

You receive chromosomes from both your mother and father when you are conceived, and both copies make up your genes. I received the mutation from either my mother or father, but only one faulty copy making me heterozygous as opposed to homozygous (two alike copies). You are not at increased risk for vascular diseases when you only have one of this particular copy, and I do not have the C677T mutation. Some individuals can be homozygous for both mutations, increasing their risk of vascular disease substantially.

From the research I've done online, this mutation can affect the amount of homocysteine in your body. It is the increase in homocysteine that can lead to an elevated risk for clots and vascular disease. But more applicable to pregnancy it can also interfere with B complex vitamin absorption and cause clots. Clots during pregnancy can interfere with how well the placenta works. As you may know the placenta is the baby's lifeline, and any interference can jepordize the baby's life unexpectedly and quickly.

Folic acid and the other B complex vitamins are important supplements to have before and during pregnancy to decrease risk of neural tube defects and other birth defects. Often times, women with elevated levels of homocysteine are prescribed blood thinners and special vitamins with huge amounts of the B complex vitamins to decrease homocysteine levels and increase the amount of the vitamins available in their bodies. This is to help reduce the risk of clots and birth defects.

I'm not sure why they don't screen for this with every woman who wants to be or is pregnant. It would seem like a simple way to reduce the risk of complications and fetal deaths. But I don't know enough about it to speculate on how common place or rare it may be, and it maybe a new field of study.

Another issue with clotting disorders (or thrombophilia) is that certain things can increase your risk for blood clots - birth control pills, sedentary activities, and flying in an airplane being the foremost on my mind.

The woman in the discussion board posted how she miscarried soon after flying. After I read this, my mind went back to how we had just come back from our trip to New Orleans in which we flew. We had arrived back home on Saturday, and Garrett was born the following Tuesday. I don't think this is coincidence considering I also started bleeding that Sunday following.

During my consult appointment with my perinatologist, I don't think I mentioned that we had just flew prior to the incident. I'm also thinking that my perinatologist did not check my homocysteine levels since this particular mutation is not supposed to affect that. But I am going to ask my doctor to check mine to make sure everything is kosher.

I also mentioned all this to my husband, and we were both in agreement that I will not be traveling next time I'm pregnant - no flying or road trips, period.

4 comments:

  1. Rachel, thank you for posting this blog. I have two children and I am now 8 weeks into my 5th pregnancy. Both of my last 2 pregnancies ended in miscarriage at 18 weeks. I am hetero for C677T. Before I found out I was pregnant I bought a plane ticket to Sweden to go to my best friends wedding. I would hate to miss her wedding but now I am questioning flying. I don't think I could handle another miscarriage. Thank you for sharing. It really helps to hear your story as I make a decision.

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  2. I share my story not to encourage others to live in fear, but to cultivate healing and to increase awareness. I want other women to listen to their bodies and their intuition and to not accept the de facto answers if it does not satisfy them. If we had accepted the answers the doctors originally game us (which were none by the way), we would still be clueless. The current condition of our medical system still leaves much to be desired. It's sad that we have to be our own advocates and educate ourselves on the issues to get the care we deserve. I guess we should feel fortunate that with the Internet we have such easy access to information now.

    Anyway, excuse my rambling. I know that if I were in your shoes I wouldn't take the risk in flying even after purchasing a ticket. I'm sure your friend wants what's best for you and your baby and would completely understand. In fact, I can think of 2 important events coming up in the near future that could conflict with our hopeful upcoming pregnancy. I hate to miss them, but I refuse to take the risk.

    Just be comfortable with whatever course you decide on and know that while I might encourage you to take one course of action, I would never judge your decision (not that you should worry about my opinion to begin with). Good luck with your pregnancy and lots of baby dust - as the saying goes. :)

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  3. Rachel, Thank you so much. I value your opinion and I am very much leaning towards not going.
    I have also had to be an advocate for myself through the past couple of years. After my last miscarriage, my doctor knew nothing about the mutation so she sent me to a specialist who sent me home saying my miscarriages possibly had nothing to do with the MTHFR. I knew in my heart her answer just was'nt right. With this pregnancy I have switched doctors and he seems to take MTHFR mutation much more serious. He also flies airplanes. I will ask him what he thinks and then go from there. Even if he says it would be ok, I'm not sure I will go because of my past experience with doctors and their lack of knowledge. I am still trying to learn as much as I can on my own but I still have a long way to go. I am also very thankful people like you who take the time to to help others. I feel so privalaged that I can read experiences such as yours and learn. Thanks, Carrie

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  4. Thanks for your comments, Carrie. I'm curious to know what your doctor is doing differently with this pregnancy. Are you on blood thinners?

    If you don't mind, can you let me know what your doctor says at your next appointment and what you decide to do? I'd like to know what he says about flying.

    Thanks for sharing and keep us posted!

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