Fetal well being - EFM & IIA

What is the % oxygen saturation level of the fetus in utero

• 90%

• 75%

• 80%

• 70%

What happens during a contraction?

What does the initial build up of CO2 cause to happen?

• A deceleration of the fetal heart

• a rise in PH level

• The PH level falls (respiratory acidosis)

• Vaso constriction of the blood vessels

What defence mechanisms does the fetus rely on when the gas exchange is impaired for prolonged periods?

The fetus has lower oxygen saturation levels, what mechanisms does it have to cope with this?

What controls the fetal heart rate?

• autonomic nervous system

• Somatic nervous system

What causes an increase in HR

• parasympathetic nervous system

• sympathetic nervous system

The baseline rate of the fetal heart is due to....

What would you see on the CTG for continued hypoxia

What would a non reassuring baseline rate be?

• 105-110bpm

• 109-115bpm

• 100-109bpm

• 90-100bpm