It may be normal for a fetus to simply move continuously for more than an hour at night during the 38th week of pregnancy, but if fetal movement decreases or even disappears after frequent fetal movement, there may be abnormalities that require prompt medical attention.
Fetal movement refers to the fetal body movement, most pregnant women will feel the fetal movement at about 20 weeks of pregnancy, usually more active at night and in the afternoon. When 38 weeks pregnant, it is normal to experience simple fetal movements for more than an hour. However, if frequent fetal movement is followed by a decrease or even disappearance of fetal movement, it is more likely to indicate the possibility of fetal hypoxia, and it is necessary to go to the hospital in a timely manner.
Generally since 28 weeks of gestation, pregnant women should self-count fetal movements to self-evaluate the intrauterine status of the fetus, normal fetal movement is ≥ 10 times / 2 hours, but if there is a 50% reduction in fetal movement or fetal movement count < 10 times / minute, there may be a risk of fetal distress, need to go to the hospital immediately, after the doctor to fully assess the targeted treatment.