Why does intrauterine adhesion occur after abortion?

Excessive suction and curettage during abortion can cause damage to the basal layer of the endometrium or damage the cervical canal mucosa, which can cause intrauterine adhesions. Intrauterine infection and endometritis can also cause intrauterine adhesions. Intrauterine adhesions can cause amenorrhea, decreased menstrual volume and endometriosis, cyclical abdominal pain, and secondary infertility and miscarriage caused by subsequent pregnancy. Intrauterine adhesions are completely preventable. As long as the suction and curettage operating procedures are strictly followed, intrauterine adhesions can be avoided. The patient's chronic cervicitis, endometritis, vaginitis, etc. should be actively treated before surgery to prevent postoperative infection. Strictly follow the operating routine of suction curettage. When using a dilator to dilate the cervix, dilate it step by step in sequence. Do not dilate the cervix roughly, do not skip sizes when using the dilator, and when using the dilator, it must be expanded to 1/2 size larger than the required suction tube. The negative pressure should be controlled appropriately during suction, and the operation should be gentle. Excessive suction curettage is strictly prohibited to avoid damaging the basal layer of the endometrium, so as to avoid scratching the cervical canal during suction, and the negative pressure should be turned off when entering and exiting the cervix.