to be a normal fetal heart rate through most of pregnancy. (Some use 110 to 150 bpm or 120 to 160 bpm.) Very early on – between 8 weeks and 10 weeks pregnant – the range is higher, between 150 ...

If your doctor sees a healthy fetal heart rate at an early ultrasound — usually done between 7-8 weeks — it's a sign of healthy pregnancy and lower miscarriage risk. On the other hand ...

ntnu.no Objectives To study fetal wellbeing and uteroplacental blood flow during strenuous treadmill running in the second trimester. Methods Six pregnant Olympic-level athletes in endurance events ...