Cardiotocography
Cardiotocography (CTG) also known as a ‘non stress test’, is a technical means of recording the fetal heartbeat and the uterine contractions during pregnancy. The machine used to perform the monitoring is called a cardiotocograph, more commonly known as an electronic fetal monitor (EFM).
Normally, a baby’s heart rate is anywhere between 110 and 160 beats per minute and increases when the baby moves. Checking that your baby’s heart rate responds to his movements is an indirect way of knowing if he gets enough oxygen from the placenta. The test will also see how your baby’s heart rate is affected by your contractions.
Normally, a baby’s heart rate is anywhere between 110 and 160 beats per minute and increases when the baby moves. Checking that your baby’s heart rate responds to his movements is an indirect way of knowing if he gets enough oxygen from the placenta. The test will also see how your baby’s heart rate is affected by your contractions.
Doctor will ask you to have a CTG in your third trimester if:
- you feel that your baby’s movements have slowed down or become irregular
- she suspects a problem with your placenta that restricts the blood flow to your baby
- you have low levels of amniotic fluid
- you are having twins
- you have diabetes or hypertension