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How Fetal Heart Rate Changes During Pregnancy ?

Updated: Nov 22, 2022

How Fetal Heart Rate Changes During Pregnancy ?


Fetal heart rate changes throughout pregnancy. It's fastest at around 9 weeks gestation then gradually slows after the 13th week of pregnancy. But fetal heart rate by week remains faster than an adult heart rate. Many pregnant people, particularly after hearing their baby's heartbeat at a prenatal visit, may wonder what fetal heart rate is normal—and what's not. What you hear might really surprise you. Most people are not prepared for how quickly a baby's heart beats in pregnancy.


Most researchers and doctors define normal fetal heart rate as between 110 to 160 beats per minute (bpm), with some experts using narrower parameters, such as 110 to 150 bpm or 120 to 160 bpm.










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