Symptoms of fetal hypoxia at 21 weeks of pregnancy

The main symptoms of fetal hypoxia at 21 weeks of pregnancy include the following: 1. **Abnormal fetal movement**: When a fetus experiences hypoxia in the uterus, it may initially present with increased fetal movement. As hypoxia persists, fetal movement may gradually decrease or even disappear. Pregnant women should closely monitor fetal movement and seek medical attention promptly if any abnormalities are detected. 2. **Abnormal fetal heart rate**: The fetal heart rate is an important indicator of fetal health. Hypoxia may cause the fetal heart rate to fall below 110 beats per minute or exceed 160 beats per minute, which is outside the normal range. Pregnant women should pay attention to fetal heart rate monitoring results during prenatal checkups and consult a doctor promptly if abnormalities are found. 3. **Abnormal amniotic fluid**: On occasion, ultrasound examination may reveal turbid amniotic fluid or floating particles in the amniotic fluid, which may also indicate fetal hypoxia in the uterus. Changes in the condition of the amniotic fluid can indirectly reflect the living environment of the fetus. 4. **Growth retardation**: Long-term hypoxia may affect the normal growth and development of the fetus, leading to intrauterine growth restriction. This requires physicians to conduct a comprehensive assessment through regular prenatal examinations and ultrasound scans. Pregnant women should closely monitor their own and the fetus's condition during pregnancy, and seek medical attention promptly if any abnormalities occur, following the doctor's advice for treatment.