Black blood clots during menstruation may be related to heavy bleeding in a short period of time, gynecological inflammation and other reasons.
Menstruation is bright red at the beginning, and it takes some time to be discharged through the uterine cavity, cervix, and vagina, and the discharged menstrual blood will turn brown or black, and the longer it is discharged, the darker it will be.
The endometrium during menstruation has more fibrinolytic enzymes present, fibrinolytic enzymes will inhibit the formation of blood clots, normal menstrual blood is not coagulated, women have a relatively large amount of bleeding in a short period of time, the local fibrinolytic enzymes may be insufficient to produce blood clots, which is manifested in the coming of the menstrual period with black blood clots.
Women suffering from gynecological inflammation can also lead to menstruation with black blood clots, such as endometritis patients, normal menstruation by the endometrium of the small arteries cyclic contraction and diastole formation.
When the endometrium appears inflammation, will lead to the endometrium of the small arteries permeability becomes bigger, there is blood stagnation or even extravasation, indirectly start the coagulation system leads to slow down the blood flow, will form a clot with menstrual blood discharge, discharge time is longer is the black blood clots.
Every time you have a period, there will be large blood clots, it is recommended to go to the hospital to check the cause and then targeted treatment.