What Factors Affect the Development of the Placenta?

There may be abnormal development of the placenta. Pay attention to the birth check.

Large placenta

The placenta is a disc-shaped organ. The diameter is about 15-20cm, the thickness is 1.5-3.0cm, and the weight is 1/6 of the fetal weight, about 500-600 grams. When the placenta weighs more than 800 grams, it is called large placenta. A large placenta is generally normal. This will not affect the development of the fetus, but it is beneficial to the development of the fetus. The large area of the placenta is attached, which is likely to cause more postpartum hemorrhage. This can avoid this. The situation arises, the placenta is easy to cause placenta previa, and there are certain risks.

Affected area

Reproductive site

Related diseases

Placenta premature placenta

Related symptoms

Sail placental anemia, excessive blood loss, placenta, placental abruption, polyp shock

Affiliated Department

Obstetrics and Gynaecology

Related inspections

Obstetric B-ultrasound

There may be abnormal development of the placenta. Pay attention to the birth check.

1. The diameter is about 15-20cm, the thickness is 1.5-3.0cm, the weight is 1/6 of the fetal weight, and about 500-600 grams. When the placenta weighs more than 800 grams, the placenta generally increases.

2. Actively improve the examination of gynecological color Doppler ultrasound and the general situation of the fetus to determine whether the fetus is developing normally in the palace.

3. Improve the examination of amniotic fluid and chromosome inspection if necessary.

It should be identified mainly from placental abruption. Prenatal hemorrhage due to other causes, such as ruptured placenta previa, rupture of blood sinus at the placental margin, and cervical lesions such as polyps, erosions, cervical cancer, etc. Combined with the medical history, vaginal examination, B-mode ultrasound, and placental examination after delivery can Confirmed.

1. Medical history: painless repeated vaginal bleeding without inducement in the third trimester of pregnancy should be considered as placenta previa. If the bleeding is early and the volume is large, the possibility of complete placenta previa is high.

2. Signs: According to the amount of blood loss, repeated bleeding, anemia, acute massive bleeding, shock can occur. Except that the fetal exposure is sometimes high, the abdominal examination is the same as a normal pregnancy. Excessive blood loss may cause intrauterine hypoxia, and severe cases may cause fetal death. Sometimes a placental noise can be heard above the pubic symphysis, but it cannot be heard when the placenta is attached to the posterior wall of the lower uterus.

3. Vaginal examination: Generally, it is only used for vaginal inspection and vault diagnosis. It is not recommended to perform internal diagnosis of cervical canal, so as to prevent the placenta attached to the place from causing major bleeding. It is even life-threatening if it is a complete placenta previa. Vaginal examinations are used to clear the diagnosis and determine the method of delivery before termination of pregnancy. It must be performed under the conditions of infusion, blood transfusion and surgery. A vaginal examination should not be performed if the diagnosis is clear or if bleeding is excessive. B-mode ultrasound has been widely used in recent years, and vaginal examinations have rarely been performed.

1. Avoid moving heavy objects: Be careful about the details of your life in the middle and late stages of pregnancy. It is not advisable to carry heavy objects or give your belly power to avoid danger.

2. Suspend sexual behavior as appropriate: If you have bleeding symptoms or enter late pregnancy, you should not have sex. In addition, patients with mild placenta previa should also avoid too intense sexual behavior or oppression of the abdomen.

3. If you have bleeding, you should see your doctor immediately: If you have bleeding symptoms, you should see your doctor immediately, no matter how much blood you have.

4. Don't be too tired: Pregnant women at high risk of pregnancy should take more rest to avoid being too tired and affecting the smoothness of pregnancy.

5. Pay attention to the fetal movement: Pay attention to whether the fetal movement is normal every day. If you feel that the fetal movement is significantly reduced, you need to see a doctor as soon as possible.

6. Pick the right hospital for birth checkups: If you are a third or fourth placenta previa patient, it is best to choose a large hospital or medical center for checkups. Once problems such as premature birth and major bleeding occur, you can deal with them immediately.

7. Do not over-exercise: Excessive exercise may also cause placental bleeding or other symptoms. Therefore, this type of pregnant women should not exercise too hard.