What does it mean when no yolk sac and germ are seen?

After finding out that you are pregnant, you need to go to the hospital for a check-up, especially an early B-ultrasound examination to determine the growth and development of the fetus. Many women have B-ultrasound examinations that show no yolk sac and germ. After this happens, most pregnant women are nervous, worried that the fetus is developing abnormally. They don't understand what the absence of yolk sac and germ means.

What does it mean when no yolk sac and germ are seen?

The yolk sac and germ are a stage in the baby's early development. After the yolk sac and germ are formed, they gradually develop into a fetus. The amenorrhea period is short and the gestational sac has not yet entered the uterine cavity to implant, so it cannot be detected by B-ultrasound. It is recommended to have an ultrasound examination around 45 to 50 days for a clear diagnosis. If the menstruation is regular and has stopped for 40 days, the gestational sac is usually between 10-20mm, the yolk sac can be seen, but the embryo may not be seen. If the size of the gestational sac is not normal, you should pay attention to the possibility of fetal arrest. Pay attention to rest and observe vaginal bleeding. If the bleeding is heavy, go to the hospital immediately.

What are the items in the first prenatal check-up?

1. Measure weight and blood pressure: Doctors usually ask expectant mothers about their weight before pregnancy, which serves as a reference for their future weight gain during pregnancy. The ideal weight gain during pregnancy is 10 to 12.5 kg.

2. Routine blood test: The expectant mother will have her blood drawn for tests, mainly to test her blood type, hemoglobin (to check the degree of anemia), liver function, kidney function, and syphilis, hepatitis B, AIDS, etc., so as to take precautions for the future.

3. Urinalysis: It mainly tests the glucose and proteinuria values ​​of the expectant mother to determine whether the expectant mother has diabetes or poor glucose tolerance, metabolic diseases that secrete insulin, whether the kidney function is sound (protein metabolism problems), preeclampsia, gestational diabetes and other diseases.

4. Liver and kidney function tests: Check for diseases such as hepatitis and nephritis. Conduct hepatitis B (HBV) virology testing because the hepatitis virus can be directly transmitted to children.

5. Ultrasound examination to listen to the baby's heartbeat: The doctor uses a Doppler fetal heart monitor to listen to the baby's heartbeat.

6. Examination of various parts of the body: The doctor will examine the expectant mother's thyroid, breasts, and pelvic cavity. Since the pelvic cavity is examined internally, in order to avoid over-stimulating the uterus, the doctor will let the expectant mother lie flat on the diagnosis table and feel the upper part of her abdomen with his hands to see if there is any lump. If there is a lump, you should suspect whether it is an ovarian tumor or uterine fibroids, but most of them are benign tumors.

7. Check the size of the uterus: The expectant mother's uterus begins to gradually grow from the 6th week of pregnancy; by the 12th week of pregnancy, the fundus of the uterus will be above the pubic symphysis; by the 20th week of pregnancy, it will cross the pelvic cavity to the navel. Therefore, from the 20th to the 35th week of pregnancy, the number of centimeters measured by the doctor from the pubic symphysis to the fundus of the uterus for the expectant mother can be roughly equal to the fetal week. This number of weeks can also be used as a basis for whether the fetus is developing normally. Usually, an inference is made based on ±3 cm. That is, less than 3 cm means the fetus is smaller; greater than 3 cm means the fetus is larger.

8. Prenatal screening for Down syndrome: This is one of the pregnancy examinations to prevent the birth of children with Down syndrome. Generally, doctors will ask pregnant women to do Down syndrome screening at 15-20 weeks. If the risk is high, the doctor will recommend amniocentesis to further check whether the fetus's chromosomes are abnormal.