I had my early ultrasound last week (6 weeks) and baby's heart rate was only 116. The doctor said today that if heart rate is lower than 130, there is a higher chance of pregnancy loss. I have to have another ultrasound next week to see if it has increased. If you have been through this and ended up with a healthy baby at the end, please tell me your success story. I really need some positivity right now. The doctor said that a lot women go ahead to have healthy pregnancies, I just need to hear from a few. Thanks! Show
Hi ladies,
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opinions of participants, and do not reflect those of What to Expect. Learn more about our guidelines Hi Moms to be, I got some distressing news at my 7 week ultrasound (requested by my OB since this is an IVF baby), they told me the heart rate was low at 104. I read alot spoke to people but was getting more distressed as everything online said 120 below is brachycardia and bad news... not too many places tell you that it could just be the baby's heart rate picking up since it's all so new... i even looked up success stories but didnt find too many.. i went for another scan yesterday (4 days later as I couldnt wait the whole week I was so stressed and had my prenatal visit yesterday so had the doctor schedule one before the visit), and the heart rate was up to 146... :))) Just wanted to share this so that i can help anyone in the same boat who may be night googling and looking for rays of hope in the midst of all the stress! xx Reply 20+ Similar Discussions FoundTrending On What to Expect1st Trimester Hi all! I had an ultrasound about a week ago (measuring 6 weeks 6 days) and the heart rate was measured at 85 bpm. Of course I panicked and googled endlessly for the next week. I would find very few positive outcomes to this, so I was pessimistic at my follow-up ultrasound at 8 weeks. BUT yesterday we went in and I was measuring 8 weeks 2 days (exactly a week later) and the heart rate was up to 168 bpm! No idea what happened or why, but I'm praying that everything continues as normal!
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Comparative Study Long-term prognosis of pregnancies complicated by slow embryonic heart rates in the early first trimesterP M Doubilet et al. J Ultrasound Med. 1999 Aug. AbstractSlow embryonic heart rates at gestational age 7 weeks or less are associated with high risk of first trimester death. Our goal was to determine the prognosis for those embryos with slow early heart rates who survive the first trimester. We prospectively recorded embryonic heart rates for all obstetrical sonograms obtained on singleton pregnancies at or before 7.0 weeks' gestation since 1993. We collected information about pregnancy outcome, including date of live birth or in utero death and presence and nature of congenital anomalies. First trimester survival rate was 61.6% among 531 embryos with slow early heart rates (< 100 bpm at < or = 6.2 weeks, < 120 bpm at 6.3 to 7.0 weeks), lower than the survival rate of 91.5% among 1501 embryos with normal heart rates (p < 10(-8), Fisher's exact test). Among 299 pregnancies in which the early heart rate was slow and the fetus was still alive at the end of the first trimester, 277 (92.6%) resulted in liveborn infants without congenital anomalies, similar to the frequency of 95.1% in cases with normal early heart rates (p > 0.10, Fisher's exact test). Structural and chromosomal anomalies, however, occurred more than twice as frequently in cases with slow early heart rates: 5.4% (16 of 299) of the first trimester survivors with slow early heart rates proved to have anomalies, as compared to 2.4% (31 of 1281) of cases with normal early heart rates (p < 0.05, Fisher's exact test). In conclusion, a pregnancy in which the embryo has a slow heart rate at or before 7.0 weeks' gestation and which continues beyond the first trimester has a high likelihood (> 90%) of resulting in a liveborn neonate without congenital anomalies. Embryos with slow early heart rates do, however, have a greater risk of having anomalies than embryos with normal early heart rates. Comment in
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Can a fetus recover from low heart rate?In mild cases, where no other conditions are present, a slow heart rate may resolve on its own, with no harm to the fetus and no long-term consequences.
Can fetal heart rate improve?The average fetal heart rate is between 110 and 160 beats per minute. It can vary by 5 to 25 beats per minute. The fetal heart rate may change as your baby responds to conditions in your uterus.
What heart rate is too low for a fetus?If the baby's heart rate goes below 110 for several minutes, or under 100 for more than three minutes, then prompt action should be taken by medical professionals. A low fetal heart rate means that the baby may not be getting a sufficient amount of oxygen to the brain. Often, this means a C-section is required.
Can a low heart rate at 6 weeks improve?Below 6.2 weeks, prognosis improved as heart rate increased to 100 beats per minute, then plateaued for rates > or = 100 beats per minute. At 6.3-7.0 weeks, prognosis improved up to 120 beats per minute, then plateaued.
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