How long it takes for the fetus to stop once it has been deprived of oxygen depends on the type of oxygen deprivation. In acute hypoxia, the fetus will stop within minutes to tens of minutes, and in chronic hypoxia, the fetus will stop within a few days or so, but this varies.
How long it takes for a fetus to stop once it has been deprived of oxygen is related to the type of oxygen deprivation. If there is acute hypoxia caused by umbilical cord torsion, prolapse of the umbilical cord, etc., the fetus is severely deprived of oxygen, and the fetus will stop within tens of minutes. If there is chronic hypoxia due to placental insufficiency, placental infarction, etc., the fetus will experience fetal arrest within a few days or so if left untreated.
If there is any physical abnormality in the fetus or the mother, it is recommended to go to the hospital in time to clarify the cause of the disease and treat it under the guidance of the doctor so as not to miss the condition.