big placenta
Introduction
Introduction The placenta is a disc shaped organ. The diameter is about 15-20 cm, the thickness is 1.5-3.0 cm, 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 the placenta. The situation of large placenta is generally normal, this will not affect the development of the fetus, but it is good for this fetal development. This placenta has a large area of attachment, which is easy to cause postpartum hemorrhage, so you can avoid this. In the case of the situation, the placenta is likely to cause the placenta previa, which is also a certain risk.
Cause
Cause
There may be abnormal development of the placenta, pay attention to the birth check.
Examine
an examination
Related inspection
Trace element detection in obstetric B-superhuman
1. The diameter is about 15-20 cm, the thickness is 1.5-3.0 cm, and the weight is 1/6 of the fetal weight, about 500-600 grams. When the weight of the placenta exceeds 800 grams, the placenta is generally increased.
2, actively improve the gynecological color ultrasound, fetal general examination, to determine whether the fetus is normal development in the palace.
3. Improve amniocentesis, chromosome examination, etc. if necessary.
Diagnosis
Differential diagnosis
Mainly should be identified with placental abruption. Other causes of prenatal bleeding, such as vascular rupture of the placenta previa, rupture of the sinusoids at the edge of the placenta, and cervical lesions such as polyps, erosion, cervical cancer, etc., combined with medical history through vaginal examination, B-mode ultrasound examination and placenta examination after delivery Confirmed diagnosis.
1. History: There is no painful repeated vaginal bleeding in the third trimester or at the time of labor. It should be considered as the placenta previa. If the bleeding is early and the amount is large, the possibility of complete placenta previa is large.
2. Signs: According to the amount of blood loss, multiple bleeding, showing anemia, acute massive bleeding, can occur shock. Except for the first exposure of the fetus, the abdominal examination is the same as normal pregnancy. Excessive blood loss can occur in the fetal intrauterine hypoxia, severe cases of fetal death. Placental murmurs can sometimes be heard above the pubic symphysis, but are not heard when the placenta is attached to the posterior wall of the lower uterine segment.
3. Vaginal examination: generally only for vaginal peeping and sacral percussion, should not be diagnosed in the neck tube, so as not to cause the placenta attached to the place to cause large bleeding. If it is a complete placenta previa, it is even life-threatening. A vaginal examination is used to confirm the diagnosis and determine the mode of delivery before termination of pregnancy. It must be carried out under conditions of infusion, blood transfusion and surgery. If the diagnosis is clear or excessive bleeding, no vaginal examination should be performed. In recent years, B-mode ultrasound has been widely used, and vaginal examinations have rarely been done.
