What are the causes of ectopic pregnancy?

What are the causes of ectopic pregnancy? Ectopic pregnancy refers to an abnormal pregnancy process in which the fertilized egg implants and develops outside the uterine cavity. Tubal pregnancy is the most common, so it is also called ectopic pregnancy. If the treatment is delayed, it will bring serious harm. So, what are the causes of ectopic pregnancy? The following is an introduction for you.

1. Inflammation of the fallopian tube. It can be divided into tubal mucositis and perisalpingitis, both of which are common causes of tubal pregnancy. Severe tubal mucositis can cause complete blockage of the lumen and lead to infertility. The lesions of perisalpingitis are mainly in the serosa or seromuscular layer of the fallopian tube, which often causes adhesion around the fallopian tube, twisting of the fallopian tube, stenosis of the lumen, weakened peristalsis of the tube wall muscles, and affects the movement of the fertilized egg.

2. History of tubal pregnancy. Women who have had tubal pregnancy are more likely to have another tubal pregnancy after surgical treatment.

3. Insertion of intrauterine contraceptive device. The use of intrauterine contraceptive device itself does not increase the incidence of ectopic pregnancy, but if a woman becomes pregnant due to contraceptive failure of the intrauterine contraceptive device, the chance of ectopic pregnancy is greater.

4. Hypoplastic or dysfunctional fallopian tubes. Hypoplastic fallopian tubes are often manifested as excessively long fallopian tubes, poorly developed muscular layer, and lack of mucosal cilia. The function of the fallopian tubes is regulated by estrogen and progesterone. If the regulation fails, it will affect the normal operation of the fertilized egg.

5. Migratory fertilized egg. When an egg is fertilized in one fallopian tube, the fertilized egg enters the opposite fallopian tube through the uterine cavity or abdominal cavity. This is called migratory fertilized egg. If the migration time is too long, the fertilized egg will grow larger and implant in the opposite fallopian tube, forming a tubal pregnancy.

6. Disease causes. Compression by tumors around the fallopian tubes, such as uterine fibroids or ovarian tumors, sometimes affects the patency of the fallopian tube lumen, which blocks the movement of the fertilized egg. Endometriosis can increase the possibility of the fertilized egg implanting in the fallopian tube.

In addition, multiple artificial abortions will also increase the chance of ectopic pregnancy. Repeated and frequent artificial abortions will cause endometrial trauma, making it difficult for the embryo to implant in the uterine cavity, and it will be transferred to another place to implant, resulting in ectopic pregnancy. Bad living habits, smoking, alcoholism, taking ovulation-inducing drugs, etc. can increase the incidence of ectopic pregnancy.