Ectopic pregnancy, is referred to as a fertilized egg located outside the inner wall of the uterus and begins to grow. 98% of etopic pregnancy occurs in fallopian tubes, however, it may occur in other places such as the ovary, cervix and abdominal cavity. One in 50 pregnancies may be one out of the womb. The main risk posed by an extra-uterine pregnancy is a rupture leading to internal bleeding. Before the 19th century, the risk of death from extra-uterine pregnancy exceeded 50%.
Causes of ectopic pregnancy
The cause of an occurrence in normal pregnancy, an egg in one of the fallopian tubes that attaches the ovaries to the uterus, is fertilized by sperm. The fertilized egg then moves to the uterus and locates itself in the inner wall of the uterus or endometrium, and it stays there and grows. As it was said, if the fertilized egg is located somewhere outside the womb, pregnancy has occurred outside the uterus.
![ectopic pregnancy](http://eng.dr-amahdavi.ir/wp-content/uploads/2018/02/ectopic-pregnancy.jpg)
Extra-uterine pregnancy usually occurs in fallopian tubes, resulting in rupture and damage to the tubes or inability to function properly in the future. In rare cases (approximately 2 out of 100 extra-uterine pregnancy), this occurs in the ovary, pelvic cavity, or cervix. Factors that increase the risk of infection: There are many factors that can increase the risk of an extra-uterine pregnancy. But the point to keep in mind is that an extra-uterine pregnancy may occur in a person without any of these factors: Pelvic Infusion (PID) or pelvic infections, infection in the female reproductive system Which usually occurs due to chlamydia. Pelvic infections are another risk factor that increases the risk of this condition.
Pelvic infections are commonly caused by organisms that are sexually transmitted or other factors. Typically, the inner wall of the fallopian tube is covered by bumps that resemble hair, called silica. Silica helps the oocy to slowly move the ovary to the uterus. If silica is damaged due to an infection, the transfer of eggs is impaired, and the fertilized egg fails to reach the uterus, and consequently an out-of-uterus pregnancy occurs. The obstruction and adhesion of the fallopian tubes also have the same effect.
Having a history of extra-uterine pregnancy (highest risk of infection, 15% after experience of first-uterus pregnancy and 30% after experience of extra-uterine pregnancy). Any damage and defect in fallopian tubes can be a risk of pregnancy. Increase the uterus. The history of any surgery on fallopian tubes also has the same effect. Infection, congenital defects or the presence of a tumor in the fallopian tubes also increases the risk of infection.