An umbilical artery S/D ratio of 3.26 can be slightly elevated depending on your gestational week, but it does not directly diagnose fetal hypoxia. To confirm hypoxia, doctors assess other key factors, including fetal heart rate patterns (cardiotocography), amniotic fluid volume, fetal movement, and overall growth. Management primarily involves close monitoring. There is no specific medication to "cure" hypoxia, but low-dose aspirin is sometimes used to support placental blood flow. If early delivery is required for the baby's safety, corticosteroids like betamethasone may be given to mature the baby's lungs. Rest assured, your obstetrician will closely monitor you to ensure a safe pregnancy.