transvaginal ultrasound and miscarriage

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Dr. Henry H. Dorn answered:

Can a transvaginal ultrasound cause a miscarriage?

Almost impossible.

Sonogram
Compared to intercourse, which is not known to cause miscarriage, a vaginal ultrasound causes much less "agitation" of the uterus. Although sometimes uncomfortable, it would almost certainly not be associated with risk of miscarriage.
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Dr. Joy M. Jackson answered:

How can a doctor tell you how long its been since you miscarried from a transvaginal ultrasound And can they be wrong if your not that far along

An

An ultrasound can detect if you are pregnant, if the fetus has a heartbeat (around 7 weeks) or if it does not have a heartbeat when it should (not a viable fetus), and if your cervix is open and a miscarriage is occuring. If you had a miscarriage and all the products of conception (fetal tissue) has passed there is no way to tell "how long it's been" since the loss occurred. Lastly, an ultrasound may not provide all the clues if read incorrectly, therefore serial blood tests to check the level of pregnancy hormone in your body will tell you exactly where you stand (pregnant or not). I am so sorry you are going through all of this. I wish you the very best.
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Dr. Joseph Accurso answered:

I went and had transvaginal ultrasound 1 day before 6 wks. Saw sac but no fetal pole or embryo. Said there is debris and they think I'll miscarry.

Only time will tell

Embryo
Unfortunately, there is nothing anyone can do at this early state. Lack of a fetal pole at 6 weeks is not a good sign. Serial measurements of the pregnancy hormone hCG may be useful to confirm unless "menses" starts, which would also verify miscarriage.
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Dr. Yash K. Khanna answered:

Hello docs. I was wondering can vaginal ultrasound cause miscarriage?

No it does not

Pregnancy_loss
It is a common procedure and does not cause miscarriage
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Vaginal ultrasound did not detect heartbeat at 6 weeks 4 days. Seen the sac and embryo. Risk of miscarriage?

50/50

Spontaneous_abortion
At this point I would say your chances are about 50/50. A vaginal sonogram at 6 weeks and 4 days can usually see a heartbeat; but if your dates are off a little, it could be too early. As long as you aren't having a lot of pain or heavy bleeding, waiting a week and rechecking the sonogram is probably best.
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Dr. Jane Van Dis answered:

8 weeks pregnant & on Prometrium due to vaginal bleeding at 4 weeks. Heartbeat at 6 weeks, another ultrasound scheduled next week. Miscarriage risk?

Slightly above norm

Sonogram
Bleeding during pregnancy does put you at slightly increased risk. Know, however, that 25% of women experience 1st trimester bleeding and the majority of those go on to have successful term pregnancies. Only time will tell. Best wishes and good luck with this pregnancy.
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Dr. Karen J. Jones answered:

I am 6 weeks 1 day pregnant, I went to the doctor to get an transvaginal ultrasound but there was nothing but a yolk sac (4.5mm). Is this normal?

Yes it can be

Ultrasound
An ultrasound at 6 weeks that shows a yolk sac is pretty good. I have my patients in this situation repeat an ultrasound in a week to see if an embryo can be seen. Since no embryo was seen there is some chance of having a miscarriage.
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Dr. Seth G. Derman answered:

Are vaginal ultrasounds safe during early pregnancy? Can they cause miscarriage? Had mild cramping for a day after getting one done and it scared me.

Yes

Pregnancy_loss
Vaginal ultrasounds are safe during early pregnancy. Many women are afraid of them because they are often done in women who are very high risk for miscarriage or ectopic pregnancy.
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What's a transvaginal ultrasound?

In the vagina

Transvaginal_ultrasound
The transducer is introduced into the vagina to allow it to be next to the pelic contents.
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Dr. Richard K. Orr answered:

What's a transvaginal ultrasound for?

Evaluate pelvic mass

Transvaginal_ultrasound
Usually to evaluate a pelvic mass or ovarian growth. Sometimes for acute abdominal pain when a ruptured ovarian cyst is part of the differential diagnosis.
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