abortion

The pregnancy ends before 20 weeks and the fetus weighs less than 500 grams and is called an abortion. Abortion is divided into spontaneous abortion and induced abortion. Among them, abortion is the termination of pregnancy by artificial or pharmaceutical methods is called early pregnancy termination. Spontaneous abortion refers to those whose embryos or fetuses are automatically detached from the mother's body for some reason and discharged before 28 weeks of pregnancy. The incidence is about 15% to 20%. Spontaneous abortion occurs 3 or more times in a row and occurs within three months of pregnancy. It is also called recurrent early spontaneous abortion. At the same time, there is also a type of spontaneous abortion, which means that the embryo or fetus has not been naturally discharged after 2 months of death in the uterus. The causes of spontaneous abortion are very complicated, including abnormal chromosomes, abnormal fertilized eggs, poor embryo quality, poor egg quality with age, poor sperm quality with age, genetic problems, and environmental pollution.