Fetal heart rate in the first and second trimester | 合法醫療器材資訊網

Anormalfetalheartrate(FHR)usuallyrangesfrom120to160beatsperminute(bpm)intheinuteroperiod.Itismeasurablesonographicallyfromaround6 ...

A normal fetal heart rate (FHR) usually ranges from 120 to 160 beats per minute (bpm) in the in utero period. It is measurable sonographically from around 6 weeks and the normal range varies during gestation, increasing to around 170 bpm at 10 weeks and decreasing from then to around 130 bpm at term.

Evolution through gestation

Although the myocardium begins to contract rhythmically by 3 weeks after conception (from spontaneously depolarizing myocardial pacemaker cells in the embryonic heart) it is first visible on sonography around 6 weeks of gestation. The FHR is then usually around 100 to 120 beats per minute (bpm).

FHR then increases progressively over the subsequent 2-3 weeks becoming 7:

~110 bpm (mean) by 5-6 weeks ~170 bpm by 9-10 weeks

This is followed by a decrease in FHR becoming on average:

~150 bpm by 14 weeks ~1...

Normal Heart Rate for Children | 合法醫療器材資訊網

Baby Heart Rate and Gender | 合法醫療器材資訊網

Did heart rate help predict gender? The average heart rate for baby boys in the first trimester was 154.9 bpm (plus or minus 22.8 bpm) and for baby girls it was ... Read More

When Can You Hear Baby's Heartbeat? | 合法醫療器材資訊網

2018年9月26日 — Your baby's heartbeat should be between 90-110 beats per minute (bpm) at 6 to 7 weeks. By the ninth week, your baby's heartbeat should reach ... Read More

Normal Fetal Heart Rate During Pregnancy | 合法醫療器材資訊網

2021年6月14日 — At about five weeks gestation, your baby's heart begins to beat. At this point, a normal fetal heart rate is about the same as the mother's: 80–85 ... Read More

Fetal heart rate in the first and second trimester | 合法醫療器材資訊網

A normal fetal heart rate (FHR) usually ranges from 120 to 160 beats per minute (bpm) in the in utero period. It is measurable sonographically from around 6 ... Read More

Fetal Heart Monitoring | 合法醫療器材資訊網

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 ... Read More

Normal Heart Rates for Children | 合法醫療器材資訊網

2018年8月24日 — What is a healthy heart rate for a child? · Newborns 0 to 1 month old: 70 to 190 beats per minute · Infants 1 to 11 months old: 80 to 160 beats per ... Read More

What Your Child's Heart Rate and Other Vital Signs Tell You | 合法醫療器材資訊網

2020年8月25日 — Infant (to 12 months): 100-160 beats per minute (bpm) · Toddler (1-3 years): 90-150 bpm · Preschooler (3-5 years): 80-140 bpm · School-aged child ... Read More

Myths About Pregnancy | 合法醫療器材資訊網

Fact: A normal fetal heart rate is between 120 and 160 beats per minute (bpm), although some people think if it's faster (usually above the 140 bpm range) it's a ... Read More

Baby's Heart | 合法醫療器材資訊網

2019年10月25日 — Your baby's heartbeat should be between 90-110 beats per minute (bpm) at 6 to 7 weeks according to the current literature . By the ninth week, ... Read More

相關資訊整理

Normal Heart Rate for Children | 合法醫療器材資訊網

Baby Heart Rate and Gender | 合法醫療器材資訊網

When Can You Hear Baby&#39;s Heartbeat? | 合法醫療器材資訊網

Normal Fetal Heart Rate During Pregnancy | 合法醫療器材資訊網

Fetal heart rate in the first and second trimester | 合法醫療器材資訊網

Fetal Heart Monitoring | 合法醫療器材資訊網

Normal Heart Rates for Children | 合法醫療器材資訊網

What Your Child&#39;s Heart Rate and Other Vital Signs Tell You | 合法醫療器材資訊網

Myths About Pregnancy | 合法醫療器材資訊網

Baby&#39;s Heart | 合法醫療器材資訊網

When Can You Hear Baby's Heartbeat? | 合法醫療器材資訊網

What Your Child's Heart Rate and Other Vital Signs Tell You | 合法醫療器材資訊網

Baby's Heart | 合法醫療器材資訊網