There is physiological torsion in the normal umbilical cord, and generally torsion 6 to 11 weeks does not affect the blood supply to the fetus.
Umbilical cord twist**
Clinical manifestations: the patient feels a decrease in fetal movements;
Ultrasound findings: the number of weeks of umbilical cord torsion is more than 12 weeks, and the torsion pitch value is 20, umbilical cord helix index (number of weeks per 1cm umbilical cord helix) 03。
Excessive torsion of the umbilical cord can affect the fetal placental circulation, resulting in intrauterine growth retardation, fetal distress and stillbirth, and perinatal fetal death.
Suggested tips:
1.Monitor fetal heart rate and fetal movement, and go to the hospital for treatment in time if there is any abnormality.
2.Oxygen inhalation: Generally, for pregnant women with umbilical cord problems, or poor fetal movement, or poor fetal heart rate monitoring, the hospital will prescribe oxygen inhalation. However, there is no evidence that oxygen can solve umbilical cord torsion.
3.Sleeping on the left side: The left decubitus position can reduce the compression of the enlarged pregnant uterus on the aora of the pregnant woman, and can maintain the blood flow of the normal uterine artery, according to the advice of the specialist.
4.Avoid sitting for a long time: sitting for a long time to work, less activity, affecting blood circulation, pelvic compression makes uterine blood circulation poor, so that the mother is injured and affects the baby's health.
5.Blood tests for annexin A2 and A5 levels: Director Liu Xiangyuan has said that umbilical cord torsion may be related to increased levels of annexin A2 and A5.
6.B. Ultra-regular monitoring of umbilical cord helix index: umbilical cord helix index refers to the number of weeks of umbilical cord spiral per 1cm, which puts forward a quantitative standard for the diagnosis of umbilical vascular torsion, which can reflect the number of weeks of the spiral, and more importantly, can reflect the density of the spiral, which is a simple, objective and quantitative index of umbilical cord vascular helix.
7.B ultrasound regular monitoring of umbilical cord blood flow: umbilical artery blood flow S d value reflects fetal placental circulation resistance and placental blood perfusion, the increase of villous vascular bed in the second and third trimesters, the decrease of fetal placental circulation resistance, the decrease of S d, and the corresponding increase of placental blood flow, which is conducive to fetal growth and development.
Pregnancy How to prevent umbilical cord torsion during pregnancy