How many days does it take to bleed during a natural miscarriage?

After an unexpected pregnancy occurs, you can choose medical abortion or artificial abortion. Both methods of abortion are active termination of pregnancy. However, some pregnant women who originally wanted children had a miscarriage during pregnancy. This is an abortion caused by non-human purposes. For pregnant women who want a baby, a miscarriage is bad news. Usually, there will be vaginal bleeding after a miscarriage. So how many days of bleeding is considered normal?

How many days does it take to bleed during a natural miscarriage?

Generally speaking, it is normal to have bleeding within 1 week. If it exceeds 10 days or the bleeding is heavy, you should seek medical attention in time to rule out residual blood in the uterus or poor uterine contraction.

What is spontaneous abortion

Abortion that occurs naturally (not caused by human intervention) is called spontaneous abortion. The incidence of spontaneous abortion is approximately 15% of all clinically confirmed pregnancies. Abortion occurring before 12 weeks of gestation is defined as early abortion, and abortion occurring between 12 weeks and less than 28 weeks of gestation is defined as late abortion. It is estimated that approximately 75% of all human pregnancies end in spontaneous abortion. Among them, most embryos stop developing soon after implantation, and only show symptoms of excessive menstruation or delayed menstruation, that is, early pregnancy miscarriage.

Termination of pregnancy before 28 weeks of gestation or when the fetal weight is less than 1000g is called spontaneous abortion. Depending on the time of occurrence, spontaneous abortion can be divided into early spontaneous abortion, mid-term abortion and premature birth. Miscarriage during the first three months of pregnancy is called early spontaneous abortion; miscarriage between the 12th and 20th weeks of pregnancy is called mid-term miscarriage; miscarriage after the 20th week of pregnancy is called premature birth. The fetus may survive, but very advanced care conditions are required.

Causes of spontaneous abortion

The following factors may lead to spontaneous abortion:

Incomplete embryonic development: Abnormal fertilized eggs are the main cause of early miscarriage. About 80% of miscarriages in the first two months of pregnancy are due to some defects in sperm and eggs, which cause the embryo to develop to a certain extent and then terminate. Therefore, the original embryonic tissue cannot be seen in the discharge of this type of miscarriage.

Endocrine dysfunction: The fertilized egg can implant on the uterine wall and grow into a fetus only under the action of progesterone. When the body does not secrete enough progesterone, the uterine decidua will develop poorly, thus affecting the development of the fertilized egg and easily causing miscarriage. If the amount of prostaglandins increases, it will cause frequent contractions of the uterine muscles and may also lead to miscarriage. Reduced thyroid function can cause cell oxidation disorders, thereby affecting the growth and development of the embryo and causing miscarriage.

Reproductive organ diseases: uterine malformations such as bicornuate uterus, septate uterus, and uterine hypoplasia. Pelvic tumors, especially submucosal fibroids, can affect the growth and development of the fetus and cause miscarriage. Relaxation of the internal os of the uterus or deep laceration of the cervix can cause premature rupture of membranes and late miscarriage.

Systemic diseases of pregnant women: When pregnant women suffer from acute infectious diseases such as influenza, typhoid fever, pneumonia, etc., bacterial toxins or viruses enter the fetus through the placenta, causing fetal poisoning and death. High fever can promote uterine contractions and cause miscarriage. Pregnant women suffering from chronic diseases such as severe anemia, heart failure, chronic nephritis and hypertension may suffer fetal disability and miscarriage due to placental infarction and intrauterine hypoxia. Malnutrition of pregnant women, especially vitamin deficiency, as well as mercury, lead and alcohol poisoning can cause miscarriage.