Correct Answer - Option 4 : 120 - 160 beats/min
- Assessment of fetal well-being is essential to rule out fetal distress in time and intervene if required.
- The test to ascertain fetal well-being is commonly performed in the last trimester i.e. around 32 weeks of gestation.
Fetal heart rate is determined by:
- Non-stress test: It is a non-invasive and most commonly used method. In NST continuous monitoring and recording of FHR is performed.
- There is an observed association of FHR acceleration with fetal movement, which is suggestive of a healthy fetus.
- Contraction stress test: it is performed at the end of pregnancy to identify whether the fetus will be able to cope with the contraction during the labor or not.
- This FHR is monitored using a cardiotocograph.
Auscultation of Fetal heart sound:
- Best audible through the back of the fetus in vertex and breech presentation.
- In face presentation, the heart sounds are heard through the fetal chest
- The maximum intensity of FH sound is below the umbilicus in cephalic presentation and around the umbilicus in breech presentation.
Booster information: Following tests were performed to predict fetal health:
- Non-stress test/fetal heart rate (Normal FHR is 120-160 bpm)
- Amniotic fluid volume/ cordocentesis
- Fetal movements - Cardiff Count 10 formulae
- Fetal tone
- Breathing movements of the baby