I went in for a second ultrasound at 8 weeks and was told the fetus was measuring 6 weeks with a low heart rate of 86. What chance of miscarriage?

A precise number .. .... or chance of miscarriage can not be estimated from these reports, but you are right to be concerned about a low heart rate and small fetal size. Both of these ultrasound associated findings can be interpreted as risks for impending miscarriage. I understand waiting and hoping is difficult...I do hope this is just a temporary blip and all will be well. Stay in close touch with your provider.

Related Questions

Ultrasound measured foetus as 6 weeks 2 days one full week after measuring 5 weeks 6 days (just sac). Heart rate 126 I think miscarriage is likely?

Not necessarily. The fetus is now off by 4 days and the accuracy of us is about 4 days. Since the other measurement was the sac and this is the fetus, the different measurement may examine it all. The sac and the fetus do not always match exactly. The heart rate is normal so likely all is well. In any event, the next scan will be very helpful. Stay positive as these results to not suggest imminent miscarriage. Read more...
Go with fetal pole. Bunny: if only a sac was seen on the initial sonogram, this can be off from your dates. I would go with the follow up sonogram that showed a fetal pole and heartbeat as the correct gestational age. The heart rate is good for that age. As long as no bleeding or cramping, you should be ok. Good luck! Read more...

I'm suppose to be 8 weeks today and had sonogram. Fetus heart rate 75. Does this mean miscarriage? What are my chances.

Likely. A slow fetal heart rate - bradycardia, could indicate a heart problem or a lack of oxygen to the fetus. If there is a prolonged measured rate of 75 the prognosis is not hopeful. Did they measure the rate over a prolonged period? Good luck. Read more...

What is and what cause a slow heart rate in a fetus?

Several reasons. Normal fetal heart rates are 120-160bpm & as low as 110 at term. If lower, there are reasons that can be significant so an obstetrician should be able to evaluate these or make a referral to a high risk pregnancy specialist. Read more...

What is the risk of having a slow heart rate in a fetus?

Depends. There are many variables involved to answer this question appropriately. A slow heart rate can be normal very early on. Later a very slow rate can signify a heart block in the baby. In labor the rate can be ominous or not depending how slow and the pattern on the tracing. Read more...