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Genetics (Expert Forum)
Miscarriage
Answered by
Lisa Kessler, MS, CGC - Hereditary Disorders, hemochromatosis, Patient Outreach
DNA Direct
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Miscarriage
by nutopia, Oct 24, 2007 10:19AM
We heard the heartbeat and saw an ultrasound at 12 weeks .. then at 15 weeks checkup - there was no heartbeat and ultrasound showed fetus was at 12 week size. There had been no indication of a miscarriage.The conclusion was that there was fetal demise soon after the 12 week visit. We are awaiting chromosome test results. Is it common for chromosomal issues to cause miscarriage after hearing heartbeat at 12 weeks or furthur along ? And if it wasn't chromosomal issues - what else could it be ?
Doctor's Answer
by Lisa Kessler, MS, CGC, Oct 24, 2007 11:59AM
, Oct 24, 2007 11:59AM
I am terribly sorry for your loss. The shock of learning that you have lost a pregnancy without any symptoms is extremely difficult, and I hope that you are finding the support that you need.
Most miscarriages occur during the first trimester. After having a normal ultrasound at 8 to 9 weeks, 2 to 3 percent of pregnancies are lost and of these most are lost within the next 2 months. After 16 weeks, only 1 percent of pregnancies are lost.
There are many possible reasons for a miscarriage, but most often the cause cannot be identified. During the first trimester, the most common cause of miscarriage is a chromosome problem, and you indicated that you are waiting for results from the chromosome analysis. Other causes for miscarriage include a problem with the implantation into the uterus, maternal trauma, exposure to toxic substances, maternal health problems, or hormonal problems. Uterine problems and genetic and acquired clotting disorders have been associated with second trimester losses. It is important to talk with your doctor about what s/he thinks may have happened. Your physician is also aware of your past gynecological and pregnancy history and may recommend any additional testing based on that.
As you cope with this experience, it may be helpful to contact the National Share office at (800) 821-6819 or to review their website. This is a group that is dedicated to providing to support to those who have experienced pregnancy or infant loss.
Most miscarriages occur during the first trimester. After having a normal ultrasound at 8 to 9 weeks, 2 to 3 percent of pregnancies are lost and of these most are lost within the next 2 months. After 16 weeks, only 1 percent of pregnancies are lost.
There are many possible reasons for a miscarriage, but most often the cause cannot be identified. During the first trimester, the most common cause of miscarriage is a chromosome problem, and you indicated that you are waiting for results from the chromosome analysis. Other causes for miscarriage include a problem with the implantation into the uterus, maternal trauma, exposure to toxic substances, maternal health problems, or hormonal problems. Uterine problems and genetic and acquired clotting disorders have been associated with second trimester losses. It is important to talk with your doctor about what s/he thinks may have happened. Your physician is also aware of your past gynecological and pregnancy history and may recommend any additional testing based on that.
As you cope with this experience, it may be helpful to contact the National Share office at (800) 821-6819 or to review their website. This is a group that is dedicated to providing to support to those who have experienced pregnancy or infant loss.
