Under normal circumstances, the fetal heart rate should be between 120 and 160 times per minute, if it is lower than 120 times or higher than 160 times, it means the fetus is suffering from ischemia and hypoxia; normal fetal movement should be no less than 3-5 times per hour, and the number of fetal movements should be more than 30 times in 12 hours. When this happens, you should go to the hospital for a timely examination to check the blood flow by Doppler ultrasound. An elevated umbilical blood flow S/D ratio on ultrasound in growth-restricted fetuses suggests inadequate placental perfusion, indicating that the fetus is hypoxic.