There are three main types of external fetal heart monitors: Fetoscope: This is the least sophisticated option. A fetoscope is an instrument similar to a stethoscope that a doctor would use to ...
Fetal heart rate may speed up to 140 to 170 BPM ... precise readings that are not affected by the baby’s movement. A stethoscope or Doppler machine can be used by anyone after 20 or 22 weeks ...