As two important tests during pregnancy, although "sugar sieve" and "Tang sieve" are only one word apart, the difference is still quite large! Because the pronunciation is exactly the same, many pregnant mothers often have the above situation when chatting and communicating.
Today Xiaobian tells the pregnant mother about the difference between Tang sieve and sugar sieve, after reading you will no longer be stupid and unclear!
"Tang sieve" and "sugar sieve" inspection content is different
Tang screening is short for Down syndrome screening.
Down syndrome is an aneuploidy chromosomal abnormality, that is, the fetus has 1 more chromosome 21 than normal people, so it is also called trisomy 21, and the incidence is about 1/600 to 1/800. Because there is no cure after birth, screening is carried out during pregnancy.
The results of the Tang screening are related to your due date, weight, age and gestational age at the time of blood collection, so before screening, you need to provide objective and accurate detailed personal information, such as birth year, last menstruation, weight, fetal time, whether to smoke, abnormal pregnancy history, etc.
Glucose screen is short for gestational diabetes screening.
The incidence of gestational diabetes mellitus is 1% to 5%. Pregnant women develop insulin resistance, are unable to fully metabolize sugar in the body, have elevated blood sugar, and in severe cases suffer from gestational diabetes.
Most people with gestational diabetes return to normal postpartum, but have an increased chance of developing type II diabetes in the future; The fetus is prone to macrosomia, which increases the difficulty of childbirth, and even affects the intelligence of newborns.
Therefore, it is necessary to carry out screening during pregnancy, as well as early detection, and symptomatic management.
"Tang sieve" and "sugar sieve" inspection time is different
The tang screening time is between the 15th and 20th weeks after pregnancy.
Because at this stage it is possible to predict whether the fetus in the abdomen has the possibility of congenital mental retardation through examination. If the risk factor of Down's child is relatively high, further amniotic fluid puncture will be done, and the chromosomes of the fetus will be checked to determine whether the fetus is a Down child.
Sugar sieves are generally performed at 24 to 28 weeks of pregnancy for expectant mothers.
At this time, during the rapid growth period of the fetus, the placenta secretion function of the expectant mother is becoming more and more vigorous, and the development of various factors leading to diabetes in the body is the most obvious, so it is not easy to miss the diagnosis.
Doing sugar screening during this period can remind pregnant mothers to prevent the emergence of gestational diabetes, be able to eat reasonably, exercise appropriately, and eventually give birth smoothly.
"Tang sieve" and "sugar sieve" inspection methods are different
Tang sieve (no need for fasting) :
Tang Siyi measures the concentration of maternal A fetal protein, villonic gonadotropin and free estriol by extracting the serum of the pregnant mother, and combines the expected date of delivery, weight, age, weight and gestational age of the pregnant mother to calculate the risk factor of the birth of a birth defect fetus, effectively reducing the occurrence of this birth defect.
Sugar sieve (on an empty stomach) :
It is divided into two types: 50g sugar sieve inspection method and 75g sugar sieve inspection method.
50g sugar screening method, 12 hours before screening on an empty stomach, dissolve 50g of glucose powder in 200ml of water, drink within 5 minutes, start timing with the first sip, and draw blood to check blood glucose after 1 hour.
75g sugar sieve test method, 75g glucose powder dissolved in 200ml of water, drunk within 5 minutes, in the 1st and 2 hours after drinking each blood collection to determine blood glucose. The 75g sugar sieve method is relatively simple and has high sensitivity.
Precautions for sugar sieve inspection:
Sugar screening requires an empty stomach, do not eat after 8 o'clock the night before the examination, and drink less water;
Check that the day when drinking powdered sugar should not be too fast, drink slowly, do not drink in one bite, but make sure to drink within 5 minutes;
The blood drawing time is mastered, and the blood is drawn every 1 hour;
It is necessary to eat after the sugar sieving to avoid prolonged hunger leading to physical discomfort.
"Tang sieve" and "sugar sieve" are different for the population
Tang Si :
Young pregnant women under the age of 34 should have a Tang screening examination.
Pregnant women who have exceeded 34 years of age, have Down syndrome patients in the family, and women who have given birth to children with Down syndrome belong to high-risk groups and do not need to be screened again, but should be directly examined for amniocentesis or villus.
Sugar sieve :
Pregnant women with a history of diabetes whose family members have a history of diabetes, pregnant women who have had gestational diabetes, pregnant women who have had fetal congenital malformations, stillbirth, giant babies, and a history of dystocia, pregnant women who have urine glucose, obesity, excessive weight gain, etc., or pregnant women with impaired glucose tolerance (blood glucose levels are higher than normal, but have not yet met the criteria for diagnosing diabetes), are all at high risk of gestational diabetes, and it is recommended to do sugar screening.