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Doctor insights on: Causes Of Low Fetal Heart Rate

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What causes low fetal heart rate?

What causes low fetal heart rate?

Many causes.: Bradyarrhythmias (heart block, hypothyroidism, drugs) can lower the fetal heart rate persistently, however the most common reason is cord or placental accidents that threaten the fetal well-being. Your obstetrician and/or perinatologist should be able to help you avoid this problem. ...Read more

Heart Rate (Definition)

Heart rate is a measurement of the number of times a person's heart beats in one minute. Normal heart rates vary with a person's age and with excitement and exercise. Abnormal heart rates are too slow, too fast, and/or irregular (too much ...Read more


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Prednisone causing low fetal heart rate?

Prednisone causing low fetal heart rate?

Fetal heart rate: Use of such steroids during pregnancy has been associated with decreased variability of fetal heart rate. I am not aware of slowing down of heart rate though. You should discuss this with your ob. ...Read more

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What is the likely explanation for low fetal heart rate during pushing?

What is the likely explanation for low fetal heart rate during pushing?

Head compression.: Typically, the fetal heart rate decreases episodically with contractions during the pushing stage of labor as the fetal head is compressed and rapidly descends in the birth canal. Head compression causes a parasympathetic neural discharge that slows the heart rate as long as the intracranial pressure continues. Other causes: cord compression, placental failure can also occur. ...Read more

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Low fetal heart rate decelerations, I'm worried!?

Low fetal heart rate decelerations, I'm worried!?

In labor?: How are you finding them? Checking at home or on a monitor in the hospital? Either way, go to your closest hospital and get checked to be sure that your baby is doing ok.

Good luck! ...Read more

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Low fetal heart rate at 18 weeks. How to treat it?

Low fetal heart rate at 18 weeks. How to treat it?

No need: Baby's heart rates change all the time. Unless the baby has a heart block that is affecting its growth there is no need for treatment. Hope the info helped. Normal heart rate is around 120-160. ...Read more

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What is the association between low fetal heart rate and slow growth?

What is the association between low fetal heart rate and slow growth?

Thyroid disorders.: The proper answer to your question is that typically the baseline fetal heart rate does not correlate with fetal growth. Rare scenarios where this general statement would not be accurate include severe maternal hypothyroidism or excessive intake of antithyroid medications in hyperthyroid women that subsequently affect the fetus and its growth curves. ...Read more

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What does low baseline for fetal heart rate indicate?

What does low baseline for fetal heart rate indicate?

Low baseline FHR: Low fetal baseline heart rates are usually diagnosed when the rate drops below 120 beats per minute consistently and stays there. Sometimes it is temporary, and sometimes it represents a fetal oxygenation problem. Ask your OB MD, who knows your care, what it exactly means in your case. ...Read more

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Is fetal heart rate 110 too low at 24 weeks?

Is fetal heart rate 110 too low at 24 weeks?

There is no: Consensus about the normal fetal heart rate. Current international guidelines recommend 110-150 beats/min. Recent german study 2013 from munich concluded the range of 120-160 possibly better. During delivery different guidelines use but 110-160 still normal. ...Read more

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What's wrong when low variability of fetal heart rate?

What's wrong when low variability of fetal heart rate?

Acidosis.: Non-reassuring fetal heart tones include loss of beat to beat or short term variability. They are commonly used to monitor fetal status and determine timing/mode of delivery although they have an exceedingly high false-positive rate in predicting actual neurological impairment in the infant. They can be due to: acidosis; hypoxia; drugs; infection; sleep cycle; dehydration; anemia; thyroidopathies. ...Read more

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Today at 10 weeks pg my baby's fetal heart rate was 198 bmp what could cause this? I hadn't had any caffeine? Is everything ok?

Today at 10 weeks pg my baby's fetal heart rate was 198 bmp what could cause this? I hadn't had any caffeine? Is everything ok?

Was doc concerned?: Was your doctor concerned with this finding at your visit today? Very specific issues are best dealt with individually. A fast heart rare at ten weeks is not something we usually focus on ...Read more

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I'm 20 weeks preg. Had us last week n fetal heart rate was 120 then 68. After 2 days had fetal echo it was 138.Today it was 62 then 72 what cd cause it?

I'm 20 weeks preg. Had us last week n fetal heart rate was 120 then 68. After 2 days had fetal echo it was 138.Today it was 62 then 72 what cd cause it?

Heart block?: This sounds quite abnormal. You should contact your doctor and ask ask for an explanation. It is possible the ultrasound detected a fetal arrhythmia. Normally this would be discussed in great detail during the visit with the patient though. ...Read more

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Can low thyroid levels affect a fetal heart rate?

Can low thyroid levels affect a fetal heart rate?

Yes, but the: Fetus should be making it's own thyroid hormone after about 12 weeks of pregnancy, and it is this level which is important. Check w/your doctor. ...Read more

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I'm 5 weeks, 3 days pregnant and an ultrasound showed a fetal heart rate of 104, which the technician said was low. Should I be concerned? Thank you.

I'm 5 weeks, 3 days pregnant and an ultrasound showed a fetal heart rate of 104, which the technician said was low. Should I be concerned? Thank you.

Fetal heart: The normal fetal heart rate is considered 120-160, but lower rates above 100 can be normal. A very low heart rate on an ultrasound at 5-6 weeks is worrisome for an impending miscarriage. There is nothing you or your doctor can do about this. The best thing for you to do would be to get weekly ultrasounds for the next 3-4 weeks to make sure the pregnancy is progressing normally. ...Read more

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I'm 7 weeks pregnant. What causes fetal heart rate to drop from 122 BPM to 81 BPM in two days after pregnancy looked great?

I'm 7 weeks pregnant. What causes fetal heart rate to drop from 122 BPM to 81 BPM in two days after pregnancy looked great?

Hard to say: This question is difficult to answer, because we aren't typically measuring the fetal heartbeat over extended periods of time at this gestational age. Possible technical error. There's not much to do ---> continue to watch the pregnancy. It's normal for fetuses to have cyclic drops in their heartbeat. You may want to consider closer following and possibly an echocardiogram later in pregnancy. ...Read more

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Is progesterone level of 14 at 8 weeks too low to sustain pregnancy? Fetal heart rate was detected

Is progesterone level of 14 at 8 weeks too low to sustain pregnancy? Fetal heart rate was detected

Progesterone: If you aren't taking any medications or supplements, then everything may be normal as the Progesterone level is high enough. ...Read more

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What is the normal fetal heart rate at 11 weeks?

Varies: The normal fetal heart rate at 11 weeks gestation could be anywhere from 110 to 170 beats per minute. ...Read more

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What is the average fetal heart rate at 6 weeks?

What is the average fetal heart rate at 6 weeks?

Fetal heart rate: When the fetal heart rate is first seen by ultrasound it ranges from 100 - 120 bpm. The normal range later in pregnancy is 120 - 160. With fetal movement it is even higher. ...Read more

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Is a fetal heart rate of 189 too high at 7 weeks?

Is a fetal heart rate of 189 too high at 7 weeks?

Need rate and rhythm: At about 5 weeks the fetal heart is about the same as the mothers (less than 100bpm). By 9-10 weeks the fetal heart rate averages about 175bpm. The fetus may have been under some distress or this may be normal. I would have it checked again at earliest convenience. A uterine U/S can show if the fetal blood supply is adequate. ...Read more

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What is a non-reassuring fetal heart rate tracing?

What is a non-reassuring fetal heart rate tracing?

Babies tell us a lot: Monitoring a fetus by fetal hr, ultrasound or the expectant woman's perception of activity is important. No one test can tell us everything we need to know, but together they can tell us which babies might be better off delivered. If a baby is near term and the testing is worrisome then obstetric specialists or subspecialists might deliver. But conditions can change. Plus every case is different. ...Read more

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I was wondering what does fetal heart rate anomaly mean?

I was wondering what does fetal heart rate anomaly mean?

Anomaly: Can't tell you what the person meant who produced what you are quoting but an anomaly in general is an abnormality. ...Read more

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6 weeks 4 days, fetal heart rate 128, should I be concerned?

No: Don't worry. That is normal for a fetus that size. As the fetus grows heart rate will come down. ...Read more

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What is the definition or description of: abnormal fetal heart rate?

What is the definition or description of: abnormal fetal heart rate?

<110, or >160 bpm.: After the first trimester, the fetal heart rate should fluctuate between 110-160 beats per minute. Arrhythmias (skipped beats, tachy-/brady-arrhythmias) account for most pre-labor abnormal heart rates. Intrapartum fetal heart rate depends on fetal oxygenation and placental perfusion and is used to prevent death of brain injury during labor. Decelerations may be early, variable or late. ...Read more

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Fetal heart rate at 8 weeks was 163 BPM but today at 9 weeks it was 144. Is this normal?

Fetal heart rate at 8 weeks was 163 BPM but today at 9 weeks it was 144. Is this normal?

Fetal heart rate: Just like us, the fetal heart rate varies from moment to moment and the baseline varies as well. The rates you present seem fine. ...Read more