[Significance of periods of fetal hyperactivity and hypoactivity at the end of pregnancy as demonstrated by tococinon. New series].

The objective study of fetal movements, using tococinon, enables to simplify the monitoring of high risk pregnancies. If the fetal activity is normal, no abnormality is noticed. On the contrary, in pregnancies where the fetus is threatened, there is always a fetal hyper or hypo-activity. Hyperactivity requires a thorough sonogram to look for a fetal malformation. Hypo-activity requires an increased surveillance which enables to rule out transient abnormalities and permits to diagnose permanent and pathological abnormalities which must be treated rapidly.