Reasons for low umbilical cord blood flow SD value

Umbilical cord blood flow is a very important indicator for determining the physical health of the fetus, because the fetus and the pregnant woman are connected through the umbilical cord, and the nutrients needed for the baby's growth and development are transported through the umbilical cord. When measuring the umbilical cord blood flow, the umbilical cord blood flow may be low. This may be due to malnutrition, insufficient rest time, etc. The following is a detailed introduction to the reasons for the low umbilical cord blood flow SD value.

If the umbilical cord blood flow SD value is low, it means the placenta is aging. This can be caused by many reasons, such as malnutrition or lack of rest. This requires attention. If the condition persists after a period of time, you need to go to the hospital for a check-up.

Umbilical blood flow refers to the ratio of the highest blood flow velocity during systole to the lowest blood flow velocity during relaxation of the umbilical artery, and indicators such as the yin force index and pulsatility index are used to reflect the blood flow situation. Checking umbilical cord blood flow is to determine the development of the fetus in the uterus.

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The purpose of checking the umbilical cord blood flow is to determine the development of the fetus in the uterus, such as whether there is intrauterine growth retardation, whether there is a tendency to develop pregnancy-induced hypertension syndrome, and whether there is intrauterine fetal hypoxia. Umbilical cord blood flow may sometimes show abnormalities due to fetal chromosomal abnormalities, congenital malformations, etc. Abnormal umbilical cord blood flow may also be related to developmental defects and histological abnormalities of the placenta. The normal value is related to the number of weeks of pregnancy. There are three main items, with the S/D value as the main indicator. The normal value is usually an S/D value of less than or equal to 3.0 in the late pregnancy.

Precautions during pregnancy:

1. Abdominal X-ray is strictly prohibited in early pregnancy

During the early stages of pregnancy, especially the first 15-56 days, the embryo's organs are highly differentiated and formed, and are very likely to become deformed after exposure to X-rays. Therefore, X-ray exposure is absolutely prohibited in the first two months of pregnancy, and should be avoided as much as possible in the first three months to prevent the baby from having defects such as microcephaly, dementia, cerebral edema, and microphthalmia. Routine lung radiography for pregnant women should also be postponed until after the fourth month of pregnancy, and X-ray pelvic measurements should be avoided as much as possible. If it is necessary for obstetrics, it should be done after 36 weeks of pregnancy.

2. Avoid infection that may cause your body temperature to rise

Fever is a common teratogenic factor. The higher the body temperature and the longer it lasts, the greater the possibility of teratogenesis. In daily life, we should pay more attention to our own temperature, avoid places with poor air quality, and avoid contact with patients with respiratory infections. If you have a fever, see a doctor as soon as possible and get treatment to reduce the fever immediately.

3. Stay away from passive smoking environment

Pregnant mothers who smoke must quit during pregnancy. Although some pregnant mothers do not smoke, they must stay away from "second-hand smoke", as the pollution level caused by it is no worse than smoking themselves. Medical research shows that women who smoke frequently or are exposed to passive smoking, especially during pregnancy, can cause maxillofacial or oral malformations in the fetus, leading to a variety of dental problems and periodontal diseases, making it difficult for the baby to have a set of healthy and strong teeth from the beginning of life and to maintain physical and mental health.

4. Treat threatened abortion correctly

Sometimes, threatened miscarriage is a warning sign of fetal developmental abnormalities, and to preserve the fetus, one must intentionally look for the cause of the miscarriage. If it is caused by maternal factors, such as trauma, uterine fibroids, uterine malformation and endocrine disorders, active measures to preserve the fetus can be taken; if it is caused by fetal factors, active measures to preserve the fetus should not be taken to avoid preserving a deformed baby.