• Look for fetal hypoxia and acidosis
• Avoid death in utero
• Decrease the rate of false-positive fetal heart rate
Parameter: Respiratory movements, Global movements, Tonus, Amniotic fluid and CTG
With regard to the ultrasound parameters, the observation lasts a maximum of 30 minutes but stops as soon as all of these criteria are met.
Scores of 8 to 10 are considered normal, with a reassuring prognosis for one week, except for outdated terms.
Score at 6: New evaluation at 24 hours
Score less than or equal to 4: Terminate the pregnancy, because probable fetal distress
In practice, when this score is limited, the umbilical and cerebral Dopplers must be added.
• Inhibited by drugs
– Morphine
– Heroine
– Methadone
• Stimulated
– Hyperglycemia
– Catecholamines
- Score 4 => pH < 7.30 for 50%
- Score 2 => pH < 7.25 for 75%
• Acute hypoxia
– decrease in the reactivity of the fetal heart rate.
– decrease in respiratory movements.
• Chronic hypoxia
– decrease in the reactivity of the fetal heart rate.
– decrease in respiratory movements.
– decrease in fetal movements.
– decrease in fetal tone.
– decrease in the amount of liquid.